Normalize machine link responses

app/composables/useMachines.js

@@ -5,6 +5,45 @@ import { useApi } from './useApi'
 const machines = ref([])
 const loading = ref(false)
 
+const resolveLinkCollection = (source, keys) => {
+  if (!source || typeof source !== 'object') {
+    return undefined
+  }
+
+  for (const key of keys) {
+    const value = source[key]
+    if (Array.isArray(value)) {
+      return value
+    }
+  }
+
+  return undefined
+}
+
+const normalizeMachineResponse = (payload) => {
+  if (!payload || typeof payload !== 'object') {
+    return null
+  }
+
+  const container = payload.machine && typeof payload.machine === 'object'
+    ? payload.machine
+    : payload
+
+  const normalized = { ...container }
+
+  const componentLinks = resolveLinkCollection(payload, ['componentLinks', 'machineComponentLinks']) ??
+    resolveLinkCollection(container, ['componentLinks', 'machineComponentLinks']) ??
+    []
+  const pieceLinks = resolveLinkCollection(payload, ['pieceLinks', 'machinePieceLinks']) ??
+    resolveLinkCollection(container, ['pieceLinks', 'machinePieceLinks']) ??
+    []
+
+  normalized.componentLinks = componentLinks
+  normalized.pieceLinks = pieceLinks
+
+  return normalized
+}
+
 export function useMachines () {
   const { showSuccess, showError, showInfo } = useToast()
   const { get, post, patch, delete: del } = useApi()
@@ -14,8 +53,18 @@ export function useMachines () {
     try {
       const result = await get('/machines')
       if (result.success) {
-        machines.value = result.data
-        showInfo(`Chargement de ${machines.value.length} machine(s) réussi`)
+        const machineList = Array.isArray(result.data)
+          ? result.data
+          : Array.isArray(result.data?.machines)
+            ? result.data.machines
+            : Array.isArray(result.data?.data)
+              ? result.data.data
+              : []
+        const normalized = machineList
+          .map((item) => normalizeMachineResponse(item))
+          .filter(Boolean)
+        machines.value = normalized
+        showInfo(`Chargement de ${normalized.length} machine(s) réussi`)
       }
     } catch (error) {
       console.error('Erreur lors du chargement des machines:', error)
@@ -29,8 +78,14 @@ export function useMachines () {
     try {
       const result = await post('/machines', machineData)
       if (result.success) {
-        machines.value.push(result.data)
-        showSuccess(`Machine "${machineData.name}" créée avec succès`)
+        const createdMachine = normalizeMachineResponse(result.data) ||
+          normalizeMachineResponse(result.data?.machine) ||
+          null
+        if (createdMachine) {
+          machines.value.push(createdMachine)
+        }
+        const displayName = createdMachine?.name || machineData?.name || ''
+        showSuccess(`Machine "${displayName}" créée avec succès`)
       }
       return result
     } catch (error) {
@@ -58,11 +113,17 @@ export function useMachines () {
     try {
       const result = await patch(`/machines/${id}`, machineData)
       if (result.success) {
+        const updatedMachine = normalizeMachineResponse(result.data) ||
+          normalizeMachineResponse(result.data?.machine) ||
+          null
         const index = machines.value.findIndex(machine => machine.id === id)
-        if (index !== -1) {
-          machines.value[index] = result.data
+        if (index !== -1 && updatedMachine) {
+          machines.value[index] = {
+            ...machines.value[index],
+            ...updatedMachine,
+          }
         }
-        showSuccess(`Machine "${result.data?.name || machineData.name || ''}" mise à jour avec succès`)
+        showSuccess(`Machine "${updatedMachine?.name || machineData.name || ''}" mise à jour avec succès`)
       }
       return result
     } catch (error) {
@@ -84,7 +145,13 @@ export function useMachines () {
       if (result.success) {
         const index = machines.value.findIndex(machine => machine.id === machineId)
         if (index !== -1) {
-          machines.value[index] = result.data?.machine || result.data
+          const updatedMachine = normalizeMachineResponse(result.data) ||
+            normalizeMachineResponse(result.data?.machine) ||
+            machines.value[index]
+          machines.value[index] = {
+            ...machines.value[index],
+            ...(updatedMachine || {}),
+          }
         }
         showSuccess('Structure de la machine mise à jour avec succès')
       }

app/pages/machine/[id].vue

@@ -858,18 +858,17 @@ const {
   updateMachine: updateMachineApi,
   reconfigureSkeleton: reconfigureMachineSkeleton,
 } = useMachines()
-const { 
-  getComposantsByMachine, 
-  updateComposant: updateComposantApi 
+const {
+  updateComposant: updateComposantApi
 } = useComposants()
 const {
-  getPiecesByMachine,
   updatePiece: updatePieceApi
 } = usePieces()
 const { componentTypes, loadComponentTypes } = useComponentTypes()
 const { pieceTypes, loadPieceTypes } = usePieceTypes()
 
 const { upsertCustomFieldValue, updateCustomFieldValue: updateCustomFieldValueApi } = useCustomFields()
+const { get } = useApi()
 const {
   uploadDocuments,
   deleteDocument,
@@ -884,6 +883,8 @@ const loading = ref(true)
 const machine = ref(null)
 const components = ref([])
 const pieces = ref([])
+const machineComponentLinks = ref([])
+const machinePieceLinks = ref([])
 const printAreaRef = ref(null)
 
 const { constructeurs, loadConstructeurs } = useConstructeurs()
@@ -970,6 +971,67 @@ const pieceTypeLabelMap = computed(() => {
   return map
 })
 
+const isPlainObject = (value) => Object.prototype.toString.call(value) === '[object Object]'
+
+const resolveIdentifier = (...candidates) => {
+  for (const candidate of candidates) {
+    if (candidate !== undefined && candidate !== null && candidate !== '') {
+      return candidate
+    }
+  }
+  return null
+}
+
+const extractParentLinkIdentifiers = (source) => {
+  if (!source || typeof source !== 'object') {
+    return {}
+  }
+
+  const identifiers = {}
+
+  const idKeys = [
+    'parentRequirementId',
+    'parentComponentRequirementId',
+    'parentPieceRequirementId',
+    'parentMachineComponentRequirementId',
+    'parentMachinePieceRequirementId',
+    'parentLinkId',
+    'parentComponentLinkId',
+    'parentPieceLinkId',
+    'parentComponentId',
+    'parentPieceId',
+  ]
+
+  idKeys.forEach((key) => {
+    if (Object.prototype.hasOwnProperty.call(source, key)) {
+      const value = source[key]
+      if (value !== undefined && value !== null && value !== '') {
+        identifiers[key] = value
+      }
+    }
+  })
+
+  const objectKeys = [
+    'parentRequirement',
+    'parentComponentRequirement',
+    'parentPieceRequirement',
+    'parentMachineComponentRequirement',
+    'parentMachinePieceRequirement',
+  ]
+
+  objectKeys.forEach((key) => {
+    const value = source[key]
+    if (isPlainObject(value) && value.id !== undefined && value.id !== null && value.id !== '') {
+      const idKey = `${key}Id`
+      if (!Object.prototype.hasOwnProperty.call(identifiers, idKey)) {
+        identifiers[idKey] = value.id
+      }
+    }
+  })
+
+  return identifiers
+}
+
 const resolveComponentRequirementTypeLabel = (requirement, entry) => {
   const typeId = entry?.typeComposantId || requirement?.typeComposantId || null
   if (!typeId) {
@@ -994,47 +1056,126 @@ const getPieceRequirementEntries = (requirementId) => {
   return pieceRequirementSelections[requirementId] || []
 }
 
-const createComponentSelectionEntry = (requirement, source = null) => ({
-  typeComposantId: source?.typeMachineComponentRequirement?.typeComposantId
-    || source?.typeComposantId
-    || source?.typeComposant?.id
-    || requirement?.typeComposantId
-    || null,
-  definition: {
-    name:
-      source?.name
-      || source?.nom
-      || requirement?.typeComposant?.name
-      || '',
-    reference: source?.reference || '',
-    constructeurId: source?.constructeurId || source?.constructeur?.id || null,
-    prix:
-      source?.prix
-      ?? source?.price
-      ?? null,
-  },
-})
+const createComponentSelectionEntry = (requirement, source = null) => {
+  const link = source?.machineComponentLink || null
 
-const createPieceSelectionEntry = (requirement, source = null) => ({
-  typePieceId: source?.typeMachinePieceRequirement?.typePieceId
-    || source?.typePieceId
-    || source?.typePiece?.id
-    || requirement?.typePieceId
-    || null,
-  definition: {
-    name:
-      source?.name
-      || source?.nom
-      || requirement?.typePiece?.name
-      || '',
-    reference: source?.reference || '',
-    constructeurId: source?.constructeurId || source?.constructeur?.id || null,
-    prix:
-      source?.prix
-      ?? source?.price
-      ?? null,
-  },
-})
+  const entry = {
+    linkId: resolveIdentifier(link?.id, source?.machineComponentLinkId, source?.linkId),
+    composantId: resolveIdentifier(source?.composantId, source?.componentId, source?.id),
+    parentLinkId: resolveIdentifier(
+      link?.parentLinkId,
+      link?.parentComponentLinkId,
+      source?.parentComponentLinkId,
+      source?.parentLinkId,
+    ),
+    parentRequirementId: resolveIdentifier(
+      link?.parentRequirementId,
+      source?.parentRequirementId,
+      requirement?.parentRequirementId,
+    ),
+    parentMachineComponentRequirementId: resolveIdentifier(
+      link?.parentMachineComponentRequirementId,
+      source?.parentMachineComponentRequirementId,
+      requirement?.parentMachineComponentRequirementId,
+    ),
+    parentMachinePieceRequirementId: resolveIdentifier(
+      link?.parentMachinePieceRequirementId,
+      source?.parentMachinePieceRequirementId,
+      requirement?.parentMachinePieceRequirementId,
+    ),
+    parentComponentId: resolveIdentifier(link?.parentComponentId, source?.parentComponentId),
+    parentPieceId: resolveIdentifier(link?.parentPieceId, source?.parentPieceId),
+    typeComposantId:
+      source?.typeMachineComponentRequirement?.typeComposantId
+      || source?.typeComposantId
+      || source?.typeComposant?.id
+      || requirement?.typeComposantId
+      || null,
+    definition: {
+      name:
+        source?.name
+        || source?.nom
+        || requirement?.typeComposant?.name
+        || '',
+      reference: source?.reference || '',
+      constructeurId: source?.constructeurId || source?.constructeur?.id || null,
+      prix:
+        source?.prix
+        ?? source?.price
+        ?? null,
+    },
+  }
+
+  if (link?.overrides && isPlainObject(link.overrides)) {
+    entry.definition = {
+      ...entry.definition,
+      ...link.overrides,
+    }
+  }
+
+  return entry
+}
+
+const createPieceSelectionEntry = (requirement, source = null) => {
+  const link = source?.machinePieceLink || null
+
+  const entry = {
+    linkId: resolveIdentifier(link?.id, source?.machinePieceLinkId, source?.linkId),
+    pieceId: resolveIdentifier(source?.pieceId, source?.id),
+    parentLinkId: resolveIdentifier(link?.parentLinkId, source?.parentLinkId),
+    parentComponentLinkId: resolveIdentifier(
+      link?.parentComponentLinkId,
+      source?.parentComponentLinkId,
+      source?.machineComponentLinkId,
+    ),
+    parentRequirementId: resolveIdentifier(
+      link?.parentRequirementId,
+      source?.parentRequirementId,
+      requirement?.parentRequirementId,
+    ),
+    parentMachineComponentRequirementId: resolveIdentifier(
+      link?.parentMachineComponentRequirementId,
+      source?.parentMachineComponentRequirementId,
+      requirement?.parentMachineComponentRequirementId,
+    ),
+    parentMachinePieceRequirementId: resolveIdentifier(
+      link?.parentMachinePieceRequirementId,
+      source?.parentMachinePieceRequirementId,
+      requirement?.parentMachinePieceRequirementId,
+    ),
+    parentComponentId: resolveIdentifier(link?.parentComponentId, source?.parentComponentId, source?.composantId),
+    parentPieceId: resolveIdentifier(link?.parentPieceId, source?.parentPieceId),
+    composantId: resolveIdentifier(source?.composantId, link?.composantId, link?.componentId),
+    typePieceId:
+      source?.typeMachinePieceRequirement?.typePieceId
+      || source?.typePieceId
+      || source?.typePiece?.id
+      || requirement?.typePieceId
+      || null,
+    definition: {
+      name:
+        source?.name
+        || source?.nom
+        || requirement?.typePiece?.name
+        || '',
+      reference: source?.reference || '',
+      constructeurId: source?.constructeurId || source?.constructeur?.id || null,
+      prix:
+        source?.prix
+        ?? source?.price
+        ?? null,
+    },
+  }
+
+  if (link?.overrides && isPlainObject(link.overrides)) {
+    entry.definition = {
+      ...entry.definition,
+      ...link.overrides,
+    }
+  }
+
+  return entry
+}
 
 const resetSkeletonRequirementSelections = () => {
   Object.keys(componentRequirementSelections).forEach((key) => {
@@ -1225,8 +1366,8 @@ const changeMachineView = async (view) => {
 
 const validateSkeletonSelections = (type) => {
   const errors = []
-  const componentSelectionsPayload = []
-  const pieceSelectionsPayload = []
+  const componentLinksPayload = []
+  const pieceLinksPayload = []
 
   for (const requirement of type.componentRequirements || []) {
     const entries = getComponentRequirementEntries(requirement.id)
@@ -1254,17 +1395,32 @@ const validateSkeletonSelections = (type) => {
         return
       }
 
-      const payload = { requirementId: requirement.id }
-      if (entry.typeComposantId && entry.typeComposantId !== requirement.typeComposantId) {
-        payload.typeComposantId = entry.typeComposantId
+      const payload = {
+        requirementId: requirement.id,
+        typeComposantId: resolvedTypeId,
+      }
+
+      if (entry.linkId) {
+        payload.id = entry.linkId
+        payload.linkId = entry.linkId
+      }
+
+      if (entry.composantId) {
+        payload.composantId = entry.composantId
       }
 
       const overrides = sanitizeDefinitionOverrides(entry.definition)
       if (overrides) {
-        payload.definition = overrides
+        payload.overrides = overrides
       }
 
-      componentSelectionsPayload.push(payload)
+      Object.assign(
+        payload,
+        extractParentLinkIdentifiers(requirement),
+        extractParentLinkIdentifiers(entry),
+      )
+
+      componentLinksPayload.push(payload)
     })
   }
 
@@ -1294,17 +1450,36 @@ const validateSkeletonSelections = (type) => {
         return
       }
 
-      const payload = { requirementId: requirement.id }
-      if (entry.typePieceId && entry.typePieceId !== requirement.typePieceId) {
-        payload.typePieceId = entry.typePieceId
+      const payload = {
+        requirementId: requirement.id,
+        typePieceId: resolvedTypeId,
+      }
+
+      if (entry.linkId) {
+        payload.id = entry.linkId
+        payload.linkId = entry.linkId
+      }
+
+      if (entry.pieceId) {
+        payload.pieceId = entry.pieceId
+      }
+
+      if (entry.composantId) {
+        payload.composantId = entry.composantId
       }
 
       const overrides = sanitizeDefinitionOverrides(entry.definition)
       if (overrides) {
-        payload.definition = overrides
+        payload.overrides = overrides
       }
 
-      pieceSelectionsPayload.push(payload)
+      Object.assign(
+        payload,
+        extractParentLinkIdentifiers(requirement),
+        extractParentLinkIdentifiers(entry),
+      )
+
+      pieceLinksPayload.push(payload)
     })
   }
 
@@ -1314,8 +1489,8 @@ const validateSkeletonSelections = (type) => {
 
   return {
     valid: true,
-    componentSelections: componentSelectionsPayload,
-    pieceSelections: pieceSelectionsPayload,
+    componentLinks: componentLinksPayload,
+    pieceLinks: pieceLinksPayload,
   }
 }
 
@@ -1333,6 +1508,16 @@ const applySkeletonReconfigurationResult = async (data) => {
     machineDocumentsLoaded.value = !!(machine.value.documents?.length)
   }
 
+  const linksApplied = applyMachineLinks(data) || applyMachineLinks(updatedMachine)
+  if (linksApplied) {
+    if (machine.value) {
+      machine.value.componentLinks = machineComponentLinks.value
+      machine.value.pieceLinks = machinePieceLinks.value
+    }
+    collapseAllComponents()
+    return
+  }
+
   const newComponents = data.components ?? updatedMachine?.components ?? null
   if (Array.isArray(newComponents)) {
     components.value = transformComponentCustomFields(newComponents)
@@ -1352,7 +1537,7 @@ const saveSkeletonConfiguration = async () => {
   }
 
   const type = machineType.value
-  let payload = { componentSelections: [], pieceSelections: [] }
+  let payload = { componentLinks: [], pieceLinks: [] }
 
   if (type && machineHasSkeletonRequirements.value) {
     const validation = validateSkeletonSelections(type)
@@ -1361,8 +1546,8 @@ const saveSkeletonConfiguration = async () => {
       return
     }
     payload = {
-      componentSelections: validation.componentSelections,
-      pieceSelections: validation.pieceSelections,
+      componentLinks: validation.componentLinks,
+      pieceLinks: validation.pieceLinks,
     }
   }
 
@@ -1436,8 +1621,17 @@ const getMachineFieldId = (fieldName) => {
 
 // Computed
 const machinePieces = computed(() => {
-  const filteredPieces = pieces.value.filter(piece => !piece.composantId)
-  console.log('machinePieces computed:', filteredPieces)
+  const filteredPieces = pieces.value.filter((piece) => {
+    const parentLinkId = resolveIdentifier(
+      piece.parentComponentLinkId,
+      piece.machinePieceLink?.parentComponentLinkId,
+      piece.parentLinkId,
+    )
+    if (parentLinkId) {
+      return false
+    }
+    return !piece.composantId
+  })
   return filteredPieces
 })
 
@@ -2081,96 +2275,319 @@ function mergeComponentTrees(existing = [], updates = []) {
   return merged
 }
 
+const buildMachineHierarchyFromLinks = (componentLinks = [], pieceLinks = []) => {
+  const componentMap = new Map()
+  const componentRoots = []
+
+  componentLinks.forEach((link, index) => {
+    if (!isPlainObject(link)) {
+      return
+    }
+
+    const baseComponent = isPlainObject(link.composant)
+      ? link.composant
+      : isPlainObject(link.component)
+        ? link.component
+        : isPlainObject(link.targetComponent)
+          ? link.targetComponent
+          : {}
+
+    const linkId = resolveIdentifier(link.id, link.linkId, link.machineComponentLinkId)
+
+    const node = {
+      ...baseComponent,
+      machineComponentLink: link,
+      machineComponentLinkId: linkId,
+      linkId,
+      componentLinkId: linkId,
+      composantId: resolveIdentifier(
+        baseComponent.composantId,
+        baseComponent.componentId,
+        link.composantId,
+        link.componentId,
+        baseComponent.id,
+      ),
+      parentComponentLinkId: resolveIdentifier(
+        link.parentComponentLinkId,
+        link.parentLinkId,
+        link.parentMachineComponentLinkId,
+        baseComponent.parentComponentLinkId,
+        baseComponent.parentLinkId,
+      ),
+      parentComposantId: resolveIdentifier(
+        baseComponent.parentComposantId,
+        link.parentComponentId,
+      ),
+      parentRequirementId: resolveIdentifier(
+        baseComponent.parentRequirementId,
+        link.parentRequirementId,
+      ),
+      parentMachineComponentRequirementId: resolveIdentifier(
+        baseComponent.parentMachineComponentRequirementId,
+        link.parentMachineComponentRequirementId,
+      ),
+      parentMachinePieceRequirementId: resolveIdentifier(
+        baseComponent.parentMachinePieceRequirementId,
+        link.parentMachinePieceRequirementId,
+      ),
+      typeMachineComponentRequirement:
+        link.requirement
+        || link.typeMachineComponentRequirement
+        || baseComponent.typeMachineComponentRequirement
+        || null,
+      typeMachineComponentRequirementId: resolveIdentifier(
+        link.requirementId,
+        link.typeMachineComponentRequirementId,
+        (link.requirement || link.typeMachineComponentRequirement)?.id,
+        baseComponent.typeMachineComponentRequirementId,
+      ),
+      definition: baseComponent.definition || {},
+      pieces: [],
+      subComponents: [],
+      sousComposants: [],
+    }
+
+    if (!node.id) {
+      node.id = resolveIdentifier(
+        baseComponent.id,
+        node.composantId,
+        link.composantId,
+        link.componentId,
+        `component-${index}`,
+      )
+    }
+
+    node.requirementId = node.typeMachineComponentRequirementId
+    node.machineComponentLinkOverrides = link.overrides || null
+    node.overrides = link.overrides || null
+    node.definitionOverrides = link.overrides || null
+    node.subcomponents = node.subComponents
+
+    componentMap.set(node.machineComponentLinkId || node.id, node)
+  })
+
+  componentMap.forEach((node) => {
+    const parentLinkId = resolveIdentifier(node.parentComponentLinkId)
+    if (parentLinkId && componentMap.has(parentLinkId)) {
+      const parent = componentMap.get(parentLinkId)
+      parent.subComponents.push(node)
+      parent.sousComposants = parent.subComponents
+      parent.subcomponents = parent.subComponents
+      node.parentComposantId = resolveIdentifier(
+        node.parentComposantId,
+        parent.composantId,
+        parent.id,
+      )
+    } else {
+      componentRoots.push(node)
+    }
+  })
+
+  const machinePieces = []
+
+  pieceLinks.forEach((link, index) => {
+    if (!isPlainObject(link)) {
+      return
+    }
+
+    const basePiece = isPlainObject(link.piece)
+      ? link.piece
+      : isPlainObject(link.targetPiece)
+        ? link.targetPiece
+        : isPlainObject(link.pieceModel)
+          ? link.pieceModel
+          : {}
+
+    const linkId = resolveIdentifier(link.id, link.linkId, link.machinePieceLinkId)
+    const parentComponentLinkId = resolveIdentifier(
+      link.parentComponentLinkId,
+      link.parentLinkId,
+      link.parentMachineComponentLinkId,
+      basePiece.parentComponentLinkId,
+    )
+
+    const pieceEntry = {
+      ...basePiece,
+      id: resolveIdentifier(basePiece.id, link.pieceId, linkId, `piece-${index}`),
+      pieceId: resolveIdentifier(basePiece.id, link.pieceId),
+      machinePieceLink: link,
+      machinePieceLinkId: linkId,
+      linkId,
+      parentComponentLinkId,
+      parentLinkId: resolveIdentifier(
+        link.parentLinkId,
+        link.parentMachinePieceLinkId,
+        basePiece.parentLinkId,
+      ),
+      parentPieceLinkId: resolveIdentifier(
+        link.parentPieceLinkId,
+        basePiece.parentPieceLinkId,
+      ),
+      parentPieceId: resolveIdentifier(
+        basePiece.parentPieceId,
+        link.parentPieceId,
+      ),
+      parentComponentId: resolveIdentifier(
+        basePiece.parentComponentId,
+        link.parentComponentId,
+      ),
+      composantId: resolveIdentifier(
+        basePiece.composantId,
+        basePiece.componentId,
+        link.composantId,
+        link.componentId,
+      ),
+      typeMachinePieceRequirement:
+        link.requirement
+        || link.typeMachinePieceRequirement
+        || basePiece.typeMachinePieceRequirement
+        || null,
+    }
+
+    pieceEntry.typeMachinePieceRequirementId = resolveIdentifier(
+      link.requirementId,
+      link.typeMachinePieceRequirementId,
+      pieceEntry.typeMachinePieceRequirement?.id,
+      basePiece.typeMachinePieceRequirementId,
+    )
+    pieceEntry.parentMachineComponentRequirementId = resolveIdentifier(
+      basePiece.parentMachineComponentRequirementId,
+      link.parentMachineComponentRequirementId,
+    )
+    pieceEntry.parentMachinePieceRequirementId = resolveIdentifier(
+      basePiece.parentMachinePieceRequirementId,
+      link.parentMachinePieceRequirementId,
+    )
+    pieceEntry.definition = basePiece.definition || {}
+    pieceEntry.overrides = link.overrides || null
+    if (!pieceEntry.name && link.overrides?.name) {
+      pieceEntry.name = link.overrides.name
+    }
+
+    if (parentComponentLinkId && componentMap.has(parentComponentLinkId)) {
+      const parent = componentMap.get(parentComponentLinkId)
+      parent.pieces.push(pieceEntry)
+      pieceEntry.parentComponentName = parent.name || parent.nom || null
+    } else {
+      machinePieces.push(pieceEntry)
+    }
+  })
+
+  componentMap.forEach((node) => {
+    node.sousComposants = node.subComponents
+    node.subcomponents = node.subComponents
+  })
+
+  return {
+    components: componentRoots,
+    machinePieces,
+  }
+}
+
+const resolveLinkArray = (source, keys) => {
+  if (!source || typeof source !== 'object') {
+    return null
+  }
+  for (const key of keys) {
+    const value = source[key]
+    if (Array.isArray(value)) {
+      return value
+    }
+  }
+  return null
+}
+
+const applyMachineLinks = (source) => {
+  const container = source?.machine ?? null
+  const componentLinks =
+    resolveLinkArray(source, ['componentLinks', 'machineComponentLinks']) ??
+    resolveLinkArray(container, ['componentLinks', 'machineComponentLinks'])
+  const pieceLinks =
+    resolveLinkArray(source, ['pieceLinks', 'machinePieceLinks']) ??
+    resolveLinkArray(container, ['pieceLinks', 'machinePieceLinks'])
+
+  if (componentLinks === null && pieceLinks === null) {
+    return false
+  }
+
+  const normalizedComponentLinks = componentLinks ?? []
+  const normalizedPieceLinks = pieceLinks ?? []
+
+  machineComponentLinks.value = normalizedComponentLinks
+  machinePieceLinks.value = normalizedPieceLinks
+
+  const { components: hierarchy, machinePieces: machineLevelPieces } =
+    buildMachineHierarchyFromLinks(normalizedComponentLinks, normalizedPieceLinks)
+
+  components.value = transformComponentCustomFields(hierarchy)
+  pieces.value = transformCustomFields(machineLevelPieces)
+
+  return true
+}
+
 // Methods
 const loadMachineData = async () => {
   loading.value = true
   try {
-    console.log('Début du chargement des données pour machineId:', machineId)
-    
-    // Load specific machine directly from API
-    const { apiCall } = useApi()
-    console.log('Appel API pour machine:', machineId)
-    const machineResult = await apiCall(`/machines/${machineId}`, { method: 'GET' })
-    console.log('Résultat machine complet:', machineResult)
-    console.log('machineResult.success:', machineResult.success)
-    console.log('machineResult.data:', machineResult.data)
-    console.log('machineResult.error:', machineResult.error)
-    console.log('Machine customFieldValues:', machineResult.data?.customFieldValues)
-    console.log('Nombre de champs personnalisés:', machineResult.data?.customFieldValues?.length)
-    
-    if (machineResult.success) {
-      machine.value = machineResult.data
-      machine.value.documents = machine.value.documents || []
-      machine.value.customFieldValues = machine.value.customFieldValues || []
-      machineDocumentsLoaded.value = !!(machine.value.documents?.length)
-      console.log('Machine trouvée et assignée:', machine.value)
+    const machineResult = await get(`/machines/${machineId}`)
 
-      syncMachineCustomFields()
-    } else {
-      console.error('Machine non trouvée:', machineId)
-      console.error('Erreur API:', machineResult.error)
-      loading.value = false
+    if (!machineResult.success) {
+      console.error('Machine non trouvée:', machineId, machineResult.error)
+      machine.value = null
+      components.value = []
+      pieces.value = []
       return
     }
-    
-    // Initialize machine fields
+
+    const machinePayload = machineResult.data?.machine && typeof machineResult.data.machine === 'object'
+      ? machineResult.data.machine
+      : machineResult.data
+
+    if (!machinePayload || typeof machinePayload !== 'object') {
+      console.error('Réponse machine invalide pour', machineId)
+      machine.value = null
+      components.value = []
+      pieces.value = []
+      return
+    }
+
+    machine.value = {
+      ...machinePayload,
+      documents: machinePayload.documents || [],
+      customFieldValues: machinePayload.customFieldValues || [],
+    }
+
+    machineDocumentsLoaded.value = machine.value.documents.length > 0
+    syncMachineCustomFields()
     initMachineFields()
-    console.log('Champs machine initialisés')
-    console.log('Machine après initialisation:', machine.value)
-    console.log('Machine name:', machineName.value)
-    console.log('Machine reference:', machineReference.value)
-    
-    // Load components with hierarchy
-    console.log('Chargement des composants avec hiérarchie...')
-    const componentsResult = await apiCall(`/composants/hierarchy/${machineId}`, { method: 'GET' })
-    console.log('Résultat composants:', componentsResult)
-    console.log('Structure des données reçues:', JSON.stringify(componentsResult.data, null, 2))
-    if (componentsResult.success) {
-      console.log('Transformation des composants...')
-      components.value = transformComponentCustomFields(componentsResult.data)
-      console.log('Composants chargés:', components.value.length)
-      console.log('Composants transformés:', components.value)
-      collapseAllComponents()
-      
-      // Debug: afficher la hiérarchie
-      console.log('=== HIÉRARCHIE DES COMPOSANTS ===')
-      components.value.forEach(comp => {
-        console.log(`Composant: ${comp.name} (ID: ${comp.id}, Parent: ${comp.parentComposantId})`)
-        if (comp.subComponents && comp.subComponents.length > 0) {
-          console.log(`  Sous-composants: ${comp.subComponents.map(sc => sc.name).join(', ')}`)
-        }
-      })
-      console.log('=== FIN HIÉRARCHIE ===')
-    } else {
-      console.error('Erreur lors du chargement des composants:', componentsResult.error)
+
+    const linksApplied = applyMachineLinks(machineResult.data)
+
+    if (machine.value) {
+      machine.value.componentLinks = machineComponentLinks.value
+      machine.value.pieceLinks = machinePieceLinks.value
     }
-    
-    // Load pieces from machine response instead of separate API call
-    if (machine.value && machine.value.pieces) {
-      // Transformer les champs personnalisés
-      pieces.value = transformCustomFields(machine.value.pieces)
-      console.log('Pièces transformées:', pieces.value)
-      console.log('Pièces chargées:', pieces.value.length)
-    } else {
-      console.log('Aucune pièce trouvée dans la réponse de la machine')
+
+    if (!linksApplied) {
+      components.value = transformComponentCustomFields(machinePayload.components || [])
+      pieces.value = transformCustomFields(machinePayload.pieces || [])
     }
 
+    collapseAllComponents()
+
     if (!machineDocumentsLoaded.value) {
       await refreshMachineDocuments()
     }
-
-    console.log('Chargement terminé avec succès')
   } catch (error) {
     console.error('Erreur lors du chargement des données:', error)
   } finally {
     loading.value = false
-    console.log('Loading terminé, loading.value =', loading.value)
   }
 }
 
 const updateMachineInfo = async () => {
   if (!machine.value) return
-  
+
   try {
     const result = await updateMachineApi(machine.value.id, {
       name: machineName.value,
@@ -2178,8 +2595,25 @@ const updateMachineInfo = async () => {
       constructeurId: machineConstructeurId.value || null
     })
     if (result.success) {
-      machine.value = result.data
-      machineConstructeurId.value = result.data.constructeurId || result.data.constructeur?.id || null
+      const machinePayload = result.data?.machine && typeof result.data.machine === 'object'
+        ? result.data.machine
+        : result.data
+
+      if (machinePayload && typeof machinePayload === 'object') {
+        machine.value = {
+          ...machine.value,
+          ...machinePayload,
+          documents: machinePayload.documents || machine.value.documents || [],
+          customFieldValues: machinePayload.customFieldValues || machine.value.customFieldValues || [],
+        }
+        machineConstructeurId.value = machine.value.constructeurId || machine.value.constructeur?.id || null
+
+        const linksApplied = applyMachineLinks(result.data)
+        if (linksApplied && machine.value) {
+          machine.value.componentLinks = machineComponentLinks.value
+          machine.value.pieceLinks = machinePieceLinks.value
+        }
+      }
     }
   } catch (error) {
     console.error('Erreur lors de la mise à jour de la machine:', error)
@@ -2348,14 +2782,12 @@ const updatePieceCustomField = async (fieldUpdate) => {
   }
 }
 
-const editComponent = (component) => {
-  // TODO: Implement edit modal
-  console.log('Edit component:', component)
+const editComponent = () => {
+  toast.showInfo('La modification des composants sera bientôt disponible')
 }
 
-const editPiece = (piece) => {
-  // TODO: Implement edit modal
-  console.log('Edit piece:', piece)
+const editPiece = () => {
+  toast.showInfo('La modification des pièces sera bientôt disponible')
 }
 
 const toggleEditMode = () => {
@@ -2415,7 +2847,6 @@ onMounted(() => {
   const route = useRoute()
   if (route.query.edit === 'true') {
     isEditMode.value = true
-    console.log('Mode édition activé depuis l\'URL')
   }
 })
 </script> 

app/pages/machines/new.vue

@@ -203,16 +203,18 @@
                         Constructeur :
                         {{ findComponentById(entry.composantId)?.constructeur?.name || findComponentById(entry.composantId)?.constructeurName || "—" }}
                       </div>
-                      <div>
-                        Machine actuelle :
-                        {{ findComponentById(entry.composantId)?.machine?.name || findComponentById(entry.composantId)?.machineId || "Non affecté" }}
-                      </div>
-                      <div
-                        v-if="findComponentById(entry.composantId)?.machine?.name"
-                        class="text-warning mt-1"
-                      >
-                        La réaffectation détachera ce composant de sa machine actuelle lors de la création.
-                      </div>
+                    <div>
+                      Machines liées :
+                      {{ formatAssignmentList(getComponentMachineAssignments(findComponentById(entry.composantId))) || 'Aucune' }}
+                    </div>
+                    <div
+                      v-if="formatAssignmentList(getComponentMachineAssignments(findComponentById(entry.composantId)))"
+                      class="text-warning mt-1"
+                    >
+                      Ce composant est déjà lié à
+                      {{ formatAssignmentList(getComponentMachineAssignments(findComponentById(entry.composantId))) }}.
+                      La création ajoutera un nouveau lien.
+                    </div>
                     </div>
                   </div>
                 </div>
@@ -319,20 +321,20 @@
                         Constructeur :
                         {{ findPieceById(entry.pieceId)?.constructeur?.name || findPieceById(entry.pieceId)?.constructeurName || "—" }}
                       </div>
-                      <div>
-                        Machine actuelle :
-                        {{ findPieceById(entry.pieceId)?.machine?.name || findPieceById(entry.pieceId)?.machineId || "Non affecté" }}
-                      </div>
-                      <div>
-                        Composant actuel :
-                        {{ findPieceById(entry.pieceId)?.composant?.name || findPieceById(entry.pieceId)?.composantId || "Non affecté" }}
-                      </div>
-                      <div
-                        v-if="findPieceById(entry.pieceId)?.machine?.name || findPieceById(entry.pieceId)?.composant?.name"
-                        class="text-warning mt-1"
-                      >
-                        Cette pièce sera détachée de son affectation actuelle pendant la création.
-                      </div>
+                    <div>
+                      Machines liées :
+                      {{ formatAssignmentList(getPieceMachineAssignments(findPieceById(entry.pieceId))) || 'Aucune' }}
+                    </div>
+                    <div>
+                      Composants liés :
+                      {{ formatAssignmentList(getPieceComponentAssignments(findPieceById(entry.pieceId))) || 'Aucun' }}
+                    </div>
+                    <div
+                      v-if="formatAssignmentList(getPieceMachineAssignments(findPieceById(entry.pieceId))) || formatAssignmentList(getPieceComponentAssignments(findPieceById(entry.pieceId)))"
+                      class="text-warning mt-1"
+                    >
+                      Cette pièce dispose déjà de liaisons existantes. La création ajoutera un nouveau lien.
+                    </div>
                     </div>
                   </div>
                 </div>
@@ -583,6 +585,7 @@ import { useMachineTypesApi } from '~/composables/useMachineTypesApi'
 import { useComposants } from '~/composables/useComposants'
 import { usePieces } from '~/composables/usePieces'
 import { useToast } from '~/composables/useToast'
+import { sanitizeDefinitionOverrides } from '~/shared/modelUtils'
 import IconLucidePlus from '~icons/lucide/plus'
 import IconLucideX from '~icons/lucide/x'
 import IconLucideEye from '~icons/lucide/eye'
@@ -639,6 +642,215 @@ const pieceById = computed(() => {
 const componentInventory = computed(() => composants.value || [])
 const pieceInventory = computed(() => pieces.value || [])
 
+const isPlainObject = value => value !== null && typeof value === 'object' && !Array.isArray(value)
+
+const toTrimmedString = (value) => {
+  if (typeof value === 'string') {
+    const trimmed = value.trim()
+    return trimmed.length > 0 ? trimmed : null
+  }
+  if (typeof value === 'number' && Number.isFinite(value)) {
+    return String(value)
+  }
+  return null
+}
+
+const dedupeAssignments = (assignments) => {
+  const seen = new Set()
+  return assignments.filter((assignment) => {
+    if (!assignment) {
+      return false
+    }
+    const id = assignment.id != null ? String(assignment.id) : ''
+    const name = assignment.name != null ? String(assignment.name) : ''
+    const key = `${id}::${name}`
+    if (!id && !name) {
+      return false
+    }
+    if (seen.has(key)) {
+      return false
+    }
+    seen.add(key)
+    return true
+  })
+}
+
+const normalizeMachineAssignment = (input) => {
+  if (!input) {
+    return null
+  }
+  if (typeof input === 'string') {
+    const name = toTrimmedString(input)
+    return name ? { id: name, name } : null
+  }
+  if (typeof input === 'number' && Number.isFinite(input)) {
+    const value = String(input)
+    return { id: value, name: value }
+  }
+
+  const container = input.machine || input.machineData || input
+  if (!isPlainObject(container)) {
+    return null
+  }
+
+  const id = container.id ?? input.machineId ?? input.id ?? null
+  const name =
+    container.name
+    || input.machineName
+    || container.label
+    || container.title
+    || (typeof id === 'string' ? id : null)
+    || (typeof id === 'number' ? String(id) : null)
+
+  if (id == null && name == null) {
+    return null
+  }
+
+  return {
+    id: id != null ? id : null,
+    name: name != null ? name : null,
+  }
+}
+
+const collectMachineAssignments = (source) => {
+  if (!isPlainObject(source)) {
+    return []
+  }
+
+  const candidates = [
+    source.machines,
+    source.machineLinks,
+    source.machineAssignments,
+    source.machinesAssignments,
+    source.linkedMachines,
+  ]
+
+  const assignments = []
+
+  candidates.forEach((list) => {
+    if (Array.isArray(list)) {
+      list.forEach((item) => {
+        const normalized = normalizeMachineAssignment(item)
+        if (normalized) {
+          assignments.push(normalized)
+        }
+      })
+    }
+  })
+
+  if (!assignments.length) {
+    const direct = normalizeMachineAssignment(source.machine)
+    if (direct) {
+      assignments.push(direct)
+    }
+  }
+
+  if (!assignments.length) {
+    const idCandidate = source.machineId ?? source.machineID ?? null
+    const nameCandidate = source.machineName ?? null
+    const normalized = normalizeMachineAssignment(nameCandidate || idCandidate)
+    if (normalized) {
+      assignments.push(normalized)
+    }
+  }
+
+  return dedupeAssignments(assignments)
+}
+
+const normalizeComponentAssignment = (input) => {
+  if (!input) {
+    return null
+  }
+  if (typeof input === 'string') {
+    const value = toTrimmedString(input)
+    return value ? { id: value, name: value } : null
+  }
+  if (typeof input === 'number' && Number.isFinite(input)) {
+    const value = String(input)
+    return { id: value, name: value }
+  }
+
+  const container = input.component || input.composant || input
+  if (!isPlainObject(container)) {
+    return null
+  }
+
+  const id = container.id ?? input.componentId ?? input.composantId ?? input.id ?? null
+  const name =
+    container.name
+    || input.componentName
+    || input.composantName
+    || container.label
+    || (typeof id === 'string' ? id : null)
+    || (typeof id === 'number' ? String(id) : null)
+
+  if (id == null && name == null) {
+    return null
+  }
+
+  return {
+    id: id != null ? id : null,
+    name: name != null ? name : null,
+  }
+}
+
+const collectComponentAssignments = (source) => {
+  if (!isPlainObject(source)) {
+    return []
+  }
+
+  const candidates = [
+    source.components,
+    source.composants,
+    source.componentLinks,
+    source.linkedComponents,
+  ]
+
+  const assignments = []
+
+  candidates.forEach((list) => {
+    if (Array.isArray(list)) {
+      list.forEach((item) => {
+        const normalized = normalizeComponentAssignment(item)
+        if (normalized) {
+          assignments.push(normalized)
+        }
+      })
+    }
+  })
+
+  if (!assignments.length) {
+    const direct = normalizeComponentAssignment(source.component || source.composant)
+    if (direct) {
+      assignments.push(direct)
+    }
+  }
+
+  if (!assignments.length) {
+    const idCandidate = source.componentId ?? source.composantId ?? null
+    const normalized = normalizeComponentAssignment(idCandidate)
+    if (normalized) {
+      assignments.push(normalized)
+    }
+  }
+
+  return dedupeAssignments(assignments)
+}
+
+const getComponentMachineAssignments = component => collectMachineAssignments(component || {})
+const getPieceMachineAssignments = piece => collectMachineAssignments(piece || {})
+const getPieceComponentAssignments = piece => collectComponentAssignments(piece || {})
+
+const formatAssignmentList = (assignments) => {
+  if (!Array.isArray(assignments) || assignments.length === 0) {
+    return ''
+  }
+  return assignments
+    .map((assignment) => assignment?.name || assignment?.id)
+    .filter(Boolean)
+    .join(', ')
+}
+
 const selectedComponentIds = computed(() => {
   const ids = []
   Object.values(componentRequirementSelections).forEach((entries) => {
@@ -715,10 +927,9 @@ const formatComponentOption = (component) => {
   if (constructeurName) {
     parts.push(constructeurName)
   }
-  if (component.machine?.name) {
-    parts.push(`Machine: ${component.machine.name}`)
-  } else if (component.machineId) {
-    parts.push(`Machine: ${component.machineId}`)
+  const machineAssignments = getComponentMachineAssignments(component)
+  if (machineAssignments.length) {
+    parts.push(`Machines: ${formatAssignmentList(machineAssignments)}`)
   }
   return parts.join(' • ')
 }
@@ -735,15 +946,13 @@ const formatPieceOption = (piece) => {
   if (constructeurName) {
     parts.push(constructeurName)
   }
-  if (piece.machine?.name) {
-    parts.push(`Machine: ${piece.machine.name}`)
-  } else if (piece.machineId) {
-    parts.push(`Machine: ${piece.machineId}`)
+  const machineAssignments = getPieceMachineAssignments(piece)
+  if (machineAssignments.length) {
+    parts.push(`Machines: ${formatAssignmentList(machineAssignments)}`)
   }
-  if (piece.composant?.name) {
-    parts.push(`Composant: ${piece.composant.name}`)
-  } else if (piece.composantId) {
-    parts.push(`Composant: ${piece.composantId}`)
+  const componentAssignments = getPieceComponentAssignments(piece)
+  if (componentAssignments.length) {
+    parts.push(`Composants: ${formatAssignmentList(componentAssignments)}`)
   }
   return parts.join(' • ')
 }
@@ -877,10 +1086,58 @@ const removePieceSelectionEntry = (requirementId, index) => {
   pieceRequirementSelections[requirementId] = entries.filter((_, i) => i !== index)
 }
 
+const extractParentIdentifiers = (source) => {
+  if (!isPlainObject(source)) {
+    return {}
+  }
+
+  const identifiers = {}
+
+  const idKeys = [
+    'parentRequirementId',
+    'parentComponentRequirementId',
+    'parentPieceRequirementId',
+    'parentMachineComponentRequirementId',
+    'parentMachinePieceRequirementId',
+    'parentLinkId',
+    'parentComponentId',
+    'parentPieceId',
+  ]
+
+  idKeys.forEach((key) => {
+    if (Object.prototype.hasOwnProperty.call(source, key)) {
+      const value = source[key]
+      if (value !== undefined && value !== null && value !== '') {
+        identifiers[key] = value
+      }
+    }
+  })
+
+  const objectKeys = [
+    'parentRequirement',
+    'parentComponentRequirement',
+    'parentPieceRequirement',
+    'parentMachineComponentRequirement',
+    'parentMachinePieceRequirement',
+  ]
+
+  objectKeys.forEach((key) => {
+    const value = source[key]
+    if (isPlainObject(value) && value.id !== undefined && value.id !== null && value.id !== '') {
+      const idKey = `${key}Id`
+      if (!Object.prototype.hasOwnProperty.call(identifiers, idKey)) {
+        identifiers[idKey] = value.id
+      }
+    }
+  })
+
+  return identifiers
+}
+
 const validateRequirementSelections = (type) => {
   const errors = []
-  const componentSelectionsPayload = []
-  const pieceSelectionsPayload = []
+  const componentLinksPayload = []
+  const pieceLinksPayload = []
 
   for (const requirement of type.componentRequirements || []) {
     const entries = getComponentRequirementEntries(requirement.id)
@@ -907,16 +1164,6 @@ const validateRequirementSelections = (type) => {
         return
       }
 
-      if (component.machineId) {
-        errors.push(`Le composant "${component.name || component.id}" est déjà affecté à une machine.`)
-        return
-      }
-
-      if (component.parentComposantId) {
-        errors.push(`Le composant "${component.name || component.id}" est déjà rattaché à un autre composant.`)
-        return
-      }
-
       const requiredTypeId = requirement.typeComposantId || requirement.typeComposant?.id || null
       if (
         requiredTypeId &&
@@ -927,10 +1174,19 @@ const validateRequirementSelections = (type) => {
         return
       }
 
-      componentSelectionsPayload.push({
+      const payload = {
         requirementId: requirement.id,
         composantId: entry.composantId,
-      })
+      }
+
+      const overrides = sanitizeDefinitionOverrides(entry.definition)
+      if (overrides) {
+        payload.overrides = overrides
+      }
+
+      Object.assign(payload, extractParentIdentifiers(requirement), extractParentIdentifiers(entry))
+
+      componentLinksPayload.push(payload)
     })
   }
 
@@ -959,11 +1215,6 @@ const validateRequirementSelections = (type) => {
         return
       }
 
-      if (piece.machineId || piece.composantId) {
-        errors.push(`La pièce "${piece.name || piece.id}" est déjà affectée.`)
-        return
-      }
-
       const requiredTypeId = requirement.typePieceId || requirement.typePiece?.id || null
       if (
         requiredTypeId &&
@@ -974,10 +1225,19 @@ const validateRequirementSelections = (type) => {
         return
       }
 
-      pieceSelectionsPayload.push({
+      const payload = {
         requirementId: requirement.id,
         pieceId: entry.pieceId,
-      })
+      }
+
+      const overrides = sanitizeDefinitionOverrides(entry.definition)
+      if (overrides) {
+        payload.overrides = overrides
+      }
+
+      Object.assign(payload, extractParentIdentifiers(requirement), extractParentIdentifiers(entry))
+
+      pieceLinksPayload.push(payload)
     })
   }
 
@@ -987,8 +1247,8 @@ const validateRequirementSelections = (type) => {
 
   return {
     valid: true,
-    componentSelections: componentSelectionsPayload,
-    pieceSelections: pieceSelectionsPayload,
+    componentLinks: componentLinksPayload,
+    pieceLinks: pieceLinksPayload,
   }
 }
 
@@ -1059,6 +1319,11 @@ const machinePreview = computed(() => {
       if (constructeurName) {
         subtitleParts.push(constructeurName)
       }
+      const machineAssignments = selectedComponent ? getComponentMachineAssignments(selectedComponent) : []
+      const assignmentLabel = formatAssignmentList(machineAssignments)
+      if (assignmentLabel) {
+        subtitleParts.push(`Liée à ${assignmentLabel}`)
+      }
       const status = entry.composantId ? 'complete' : 'pending'
 
       return {
@@ -1066,6 +1331,8 @@ const machinePreview = computed(() => {
         status,
         title: displayName,
         subtitle: subtitleParts.join(' • ') || null,
+        assignmentLabel,
+        assignments: machineAssignments,
       }
     })
 
@@ -1086,9 +1353,22 @@ const machinePreview = computed(() => {
       issues.push({ message: 'Sélectionner un composant pour chaque entrée.', kind: 'error', anchor: `component-group-${requirement.id}` })
     }
 
-    const status = issues.some(issue => issue.kind === 'error')
+    normalizedEntries.forEach((entrySummary) => {
+      if (entrySummary.assignmentLabel) {
+        issues.push({
+          message: `Le composant "${entrySummary.title}" est déjà lié à ${entrySummary.assignmentLabel}.`,
+          kind: 'warning',
+          anchor: `component-group-${requirement.id}`,
+        })
+      }
+    })
+
+    const hasErrors = issues.some(issue => issue.kind === 'error')
+    const hasWarnings = issues.some(issue => issue.kind === 'warning') || completed < entries.length
+
+    const status = hasErrors
       ? 'error'
-      : completed < entries.length
+      : hasWarnings
         ? 'warning'
         : 'ready'
 
@@ -1120,6 +1400,16 @@ const machinePreview = computed(() => {
       if (constructeurName) {
         subtitleParts.push(constructeurName)
       }
+      const machineAssignments = selectedPiece ? getPieceMachineAssignments(selectedPiece) : []
+      const machineAssignmentLabel = formatAssignmentList(machineAssignments)
+      if (machineAssignmentLabel) {
+        subtitleParts.push(`Machines: ${machineAssignmentLabel}`)
+      }
+      const componentAssignments = selectedPiece ? getPieceComponentAssignments(selectedPiece) : []
+      const componentAssignmentLabel = formatAssignmentList(componentAssignments)
+      if (componentAssignmentLabel) {
+        subtitleParts.push(`Composants: ${componentAssignmentLabel}`)
+      }
       const status = entry.pieceId ? 'complete' : 'pending'
 
       return {
@@ -1127,6 +1417,10 @@ const machinePreview = computed(() => {
         status,
         title: displayName,
         subtitle: subtitleParts.join(' • ') || null,
+        machineAssignmentLabel,
+        componentAssignmentLabel,
+        machineAssignments,
+        componentAssignments,
       }
     })
 
@@ -1147,9 +1441,29 @@ const machinePreview = computed(() => {
       issues.push({ message: 'Sélectionner une pièce pour chaque entrée.', kind: 'error', anchor: `piece-group-${requirement.id}` })
     }
 
-    const status = issues.some(issue => issue.kind === 'error')
+    normalizedEntries.forEach((entrySummary) => {
+      if (entrySummary.machineAssignmentLabel) {
+        issues.push({
+          message: `La pièce "${entrySummary.title}" est déjà liée aux machines ${entrySummary.machineAssignmentLabel}.`,
+          kind: 'warning',
+          anchor: `piece-group-${requirement.id}`,
+        })
+      }
+      if (entrySummary.componentAssignmentLabel) {
+        issues.push({
+          message: `La pièce "${entrySummary.title}" est déjà rattachée aux composants ${entrySummary.componentAssignmentLabel}.`,
+          kind: 'warning',
+          anchor: `piece-group-${requirement.id}`,
+        })
+      }
+    })
+
+    const hasErrors = issues.some(issue => issue.kind === 'error')
+    const hasWarnings = issues.some(issue => issue.kind === 'warning') || completed < entries.length
+
+    const status = hasErrors
       ? 'error'
-      : completed < entries.length
+      : hasWarnings
         ? 'warning'
         : 'ready'
 
@@ -1293,8 +1607,8 @@ const finalizeMachineCreation = async () => {
 
     const hasRequirements = (type.componentRequirements?.length || 0) > 0 || (type.pieceRequirements?.length || 0) > 0
 
-    let componentSelections = []
-    let pieceSelections = []
+    let componentLinks = []
+    let pieceLinks = []
 
     if (hasRequirements) {
       const validationResult = validateRequirementSelections(type)
@@ -1302,16 +1616,16 @@ const finalizeMachineCreation = async () => {
         toast.showError(validationResult.error)
         return
       }
-      componentSelections = validationResult.componentSelections
-      pieceSelections = validationResult.pieceSelections
+      componentLinks = validationResult.componentLinks
+      pieceLinks = validationResult.pieceLinks
     }
 
     const payload = {
       ...baseMachineData,
       ...(hasRequirements
         ? {
-            componentSelections,
-            pieceSelections
+            componentLinks,
+            pieceLinks
           }
         : {})
     }