import {
  createEmptyComponentModelStructure,
  type ComponentModelCustomField,
  type ComponentModelPiece,
  type ComponentModelStructure,
  type ComponentModelStructureNode,
  type PieceModelCustomField,
  type PieceModelStructure,
  type PieceModelStructureEditorField,
  type PieceModelStructureForEditor,
  createEmptyPieceModelStructure,
} from './types/inventory'

export const isPlainObject = (value: unknown): value is Record<string, unknown> => {
  return value !== null && typeof value === 'object' && !Array.isArray(value)
}

export interface ModelStructurePreview {
  customFields: number
  pieces: number
  subcomponents: number
}

export const defaultStructure = (): ComponentModelStructure => ({
  ...createEmptyComponentModelStructure(),
})

const ensureStructureShape = (input: any): ComponentModelStructure => {
  const base = createEmptyComponentModelStructure()
  if (!isPlainObject(input)) {
    return base
  }

  const clone: ComponentModelStructure = {
    ...base,
    customFields: Array.isArray((input as any).customFields) ? (input as any).customFields : [],
    pieces: Array.isArray((input as any).pieces) ? (input as any).pieces : [],
    subcomponents: Array.isArray((input as any).subcomponents)
      ? (input as any).subcomponents
      : Array.isArray((input as any).subComponents)
        ? (input as any).subComponents
        : [],
    typeComposantId: typeof (input as any).typeComposantId === 'string' ? (input as any).typeComposantId : undefined,
    typeComposantLabel: typeof (input as any).typeComposantLabel === 'string'
      ? (input as any).typeComposantLabel
      : undefined,
    modelId: typeof (input as any).modelId === 'string' ? (input as any).modelId : undefined,
    familyCode: typeof (input as any).familyCode === 'string' ? (input as any).familyCode : undefined,
    alias: typeof (input as any).alias === 'string' ? (input as any).alias : undefined,
  }

  return clone
}

export const cloneStructure = (input: any): ComponentModelStructure => {
  try {
    const cloned = JSON.parse(JSON.stringify(input ?? defaultStructure()))
    return ensureStructureShape(cloned)
  } catch (error) {
    return defaultStructure()
  }
}

const sanitizeCustomFields = (fields: any[]): ComponentModelCustomField[] => {
  if (!Array.isArray(fields)) {
    return []
  }

  return fields
    .map((field) => {
      const name = typeof field?.name === 'string' ? field.name.trim() : ''
      if (!name) {
        return null
      }

      const type = typeof field?.type === 'string' && field.type ? field.type : 'text'
      const required = !!field?.required

      let options: string[] | undefined
      if (type === 'select') {
        const rawOptions = typeof field?.optionsText === 'string'
          ? field.optionsText
          : Array.isArray(field?.options)
            ? field.options.join('\n')
            : ''
        const parsed = rawOptions
          .split(/\r?\n/)
          .map((option) => option.trim())
          .filter((option) => option.length > 0)
        options = parsed.length > 0 ? parsed : undefined
      }

      const result: ComponentModelCustomField = { name, type, required }
      if (options) {
        result.options = options
      }
      return result
    })
    .filter((field): field is ComponentModelCustomField => !!field)
}

const sanitizePieces = (pieces: any[]): ComponentModelPiece[] => {
  if (!Array.isArray(pieces)) {
    return []
  }

  return pieces
    .map((piece) => {
      const rawTypePieceId = typeof piece?.typePieceId === 'string'
        ? piece.typePieceId.trim()
        : typeof piece?.typePiece?.id === 'string'
          ? piece.typePiece.id.trim()
          : ''
      const typePieceId = rawTypePieceId.length > 0 ? rawTypePieceId : undefined

      const rawTypePieceLabel = typeof piece?.typePieceLabel === 'string'
        ? piece.typePieceLabel.trim()
        : typeof piece?.typePiece?.name === 'string'
          ? piece.typePiece.name.trim()
          : ''
      const typePieceLabel = rawTypePieceLabel.length > 0 ? rawTypePieceLabel : undefined

      const reference = typeof piece?.reference === 'string' && piece.reference.trim().length > 0
        ? piece.reference.trim()
        : undefined

      if (!typePieceId && !typePieceLabel && !reference) {
        return null
      }

      const result: ComponentModelPiece = {}
      if (reference !== undefined) {
        result.reference = reference
      }
      if (typePieceId) {
        result.typePieceId = typePieceId
      }
      if (typePieceLabel) {
        result.typePieceLabel = typePieceLabel
      }
      return result
    })
    .filter((piece): piece is ComponentModelPiece => !!piece)
}

const sanitizeSubcomponents = (components: any[]): ComponentModelStructureNode[] => {
  if (!Array.isArray(components)) {
    return []
  }

  return components
    .map((component) => {
      const rawTypeComposantId = typeof component?.typeComposantId === 'string'
        ? component.typeComposantId.trim()
        : typeof component?.typeComposant?.id === 'string'
          ? component.typeComposant.id.trim()
          : ''
      const typeComposantId = rawTypeComposantId.length > 0 ? rawTypeComposantId : undefined

      const modelId = typeof component?.modelId === 'string' && component.modelId.trim().length > 0
        ? component.modelId.trim()
        : undefined

      const familyCode = typeof component?.familyCode === 'string' && component.familyCode.trim().length > 0
        ? component.familyCode.trim()
        : undefined

      const alias = typeof component?.alias === 'string' && component.alias.trim().length > 0
        ? component.alias.trim()
        : undefined

      if (!typeComposantId && !modelId && !familyCode) {
        return null
      }

      const result: ComponentModelStructureNode = {
        subcomponents: sanitizeSubcomponents(
          Array.isArray(component?.subcomponents)
            ? component.subcomponents
            : component?.subComponents,
        ),
      }

      if (typeComposantId) {
        result.typeComposantId = typeComposantId
      }
      const typeComposantLabel = typeof component?.typeComposantLabel === 'string'
        ? component.typeComposantLabel.trim()
        : typeof component?.typeComposant?.name === 'string'
          ? component.typeComposant.name.trim()
          : ''
      if (typeComposantLabel) {
        result.typeComposantLabel = typeComposantLabel
      }
      if (modelId) {
        result.modelId = modelId
      }
      if (familyCode) {
        result.familyCode = familyCode
      }
      if (alias) {
        result.alias = alias
      }

      return result
    })
    .filter((component): component is ComponentModelStructureNode => !!component)
}

export const normalizeStructureForSave = (input: any): ComponentModelStructure => {
  const source = cloneStructure(input)

  return {
    customFields: sanitizeCustomFields(source.customFields),
    pieces: sanitizePieces(source.pieces),
    subcomponents: sanitizeSubcomponents(source.subcomponents),
    typeComposantId: source.typeComposantId,
    typeComposantLabel: source.typeComposantLabel,
    modelId: source.modelId,
    familyCode: source.familyCode,
    alias: source.alias,
  }
}

const hydrateCustomFields = (fields: any[]): any[] => {
  if (!Array.isArray(fields)) {
    return []
  }

  return fields.map((field) => ({
    name: field?.name ?? '',
    type: field?.type ?? 'text',
    required: !!field?.required,
    options: Array.isArray(field?.options) ? field.options : [],
    optionsText: Array.isArray(field?.options) ? field.options.join('\n') : (field?.optionsText ?? ''),
  }))
}

const hydratePieces = (pieces: any[]): ComponentModelPiece[] => {
  if (!Array.isArray(pieces)) {
    return []
  }

  return pieces.map((piece) => ({
    typePieceId: piece?.typePieceId ?? piece?.typePiece?.id ?? '',
    typePieceLabel: piece?.typePieceLabel ?? piece?.typePiece?.name ?? '',
    reference: piece?.reference ?? '',
  }))
}

const hydrateSubcomponents = (components: any[]): ComponentModelStructureNode[] => {
  if (!Array.isArray(components)) {
    return []
  }

  return components.map((component) => ({
    typeComposantId: component?.typeComposantId ?? component?.typeComposant?.id ?? '',
    typeComposantLabel: component?.typeComposantLabel ?? component?.typeComposant?.name ?? '',
    modelId: component?.modelId ?? '',
    familyCode: component?.familyCode ?? component?.typeComposant?.code ?? '',
    alias: component?.alias ?? component?.name ?? '',
    subcomponents: hydrateSubcomponents(
      Array.isArray(component?.subcomponents)
        ? component.subcomponents
        : component?.subComponents,
    ),
  }))
}

export const hydrateStructureForEditor = (input: any): ComponentModelStructure => {
  const source = cloneStructure(input)
  return {
    customFields: hydrateCustomFields(source.customFields),
    pieces: hydratePieces(source.pieces),
    subcomponents: hydrateSubcomponents(
      Array.isArray(source.subcomponents) ? source.subcomponents : (source as any).subComponents,
    ),
    typeComposantId: source.typeComposantId ?? '',
    typeComposantLabel: source.typeComposantLabel ?? '',
    modelId: source.modelId ?? '',
    familyCode: source.familyCode ?? '',
    alias: source.alias ?? '',
  }
}

const toOptionsText = (field: any) => {
  if (typeof field?.optionsText === 'string') {
    return field.optionsText
  }
  if (Array.isArray(field?.options)) {
    return field.options.join('\n')
  }
  return ''
}

const mapComponentCustomFields = (fields: any[]) => {
  if (!Array.isArray(fields)) {
    return []
  }
  return fields.map((field) => ({
    name: field?.name ?? '',
    type: field?.type ?? 'text',
    required: !!field?.required,
    options: Array.isArray(field?.options) ? field.options : [],
    optionsText: toOptionsText(field),
  }))
}

const mapComponentPieces = (pieces: any[]): ComponentModelPiece[] => {
  if (!Array.isArray(pieces)) {
    return []
  }
  return pieces.map((piece) => ({
    reference: piece?.reference ?? '',
    typePieceId: piece?.typePieceId ?? piece?.typePiece?.id ?? '',
    typePieceLabel: piece?.typePieceLabel ?? piece?.typePiece?.name ?? '',
  }))
}

const mapSubcomponents = (components: any[]): ComponentModelStructureNode[] => {
  if (!Array.isArray(components)) {
    return []
  }
  return components.map((component) => ({
    typeComposantId: component?.typeComposantId ?? component?.typeComposant?.id ?? '',
    typeComposantLabel: component?.typeComposantLabel ?? component?.typeComposant?.name ?? '',
    modelId: component?.modelId ?? '',
    familyCode: component?.familyCode ?? component?.typeComposant?.code ?? '',
    alias: component?.alias ?? component?.name ?? '',
    subcomponents: mapSubcomponents(
      Array.isArray(component?.subcomponents)
        ? component.subcomponents
        : component?.subComponents,
    ),
  }))
}

export const extractStructureFromComponent = (component: any) => {
  if (!component) {
    return defaultStructure()
  }

  const raw = {
    customFields: mapComponentCustomFields(component.customFields),
    pieces: mapComponentPieces(component.pieces),
    subcomponents: mapSubcomponents(
      Array.isArray(component?.subcomponents)
        ? component.subcomponents
        : component?.subComponents,
    ),
    typeComposantId: component?.typeComposantId ?? component?.typeComposant?.id ?? '',
    typeComposantLabel: component?.typeComposant?.name ?? component?.typeComposantLabel ?? '',
    modelId: component?.modelId ?? '',
    familyCode: component?.familyCode ?? component?.typeComposant?.code ?? '',
    alias: component?.alias ?? component?.name ?? '',
  }

  return normalizeStructureForSave(raw)
}

export const computeStructureStats = (structure: any): ModelStructurePreview => {
  if (!structure || typeof structure !== 'object') {
    return { customFields: 0, pieces: 0, subcomponents: 0 }
  }

  return {
    customFields: Array.isArray(structure.customFields) ? structure.customFields.length : 0,
    pieces: Array.isArray(structure.pieces) ? structure.pieces.length : 0,
    subcomponents: Array.isArray(structure.subcomponents)
      ? structure.subcomponents.length
      : Array.isArray(structure.subComponents)
        ? structure.subComponents.length
        : 0,
  }
}

export const formatStructurePreview = (structure: any) => {
  const stats = computeStructureStats(structure)
  if (!stats.customFields && !stats.pieces && !stats.subcomponents) {
    return 'Structure vide'
  }

  const segments: string[] = []
  if (stats.customFields) segments.push(`${stats.customFields} champ(s)`)
  if (stats.pieces) segments.push(`${stats.pieces} pièce(s)`)
  if (stats.subcomponents) segments.push(`${stats.subcomponents} sous-composant(s)`)
  return segments.join(' • ')
}

export interface DefinitionOverridePayload {
  name?: string
  reference?: string
  constructeurId?: string | null
  prix?: number
}

export const sanitizeDefinitionOverrides = (definition: any): DefinitionOverridePayload | null => {
  if (!definition || typeof definition !== 'object') {
    return null
  }

  const payload: DefinitionOverridePayload = {}

  if (typeof definition.name === 'string') {
    const name = definition.name.trim()
    if (name.length > 0) {
      payload.name = name
    }
  }

  if (typeof definition.reference === 'string') {
    const reference = definition.reference.trim()
    if (reference.length > 0) {
      payload.reference = reference
    }
  }

  if (definition.constructeurId !== undefined && definition.constructeurId !== null && definition.constructeurId !== '') {
    payload.constructeurId = definition.constructeurId
  }

  if (definition.prix !== undefined && definition.prix !== null && definition.prix !== '') {
    const parsed = Number(definition.prix)
    if (!Number.isNaN(parsed)) {
      payload.prix = parsed
    }
  }

  return Object.keys(payload).length ? payload : null
}

export const defaultPieceStructure = (): PieceModelStructure => ({
  ...createEmptyPieceModelStructure(),
})

const ensurePieceStructureShape = (input: any): PieceModelStructure => {
  const base = createEmptyPieceModelStructure()
  if (!isPlainObject(input)) {
    return base
  }

  const clone: PieceModelStructure = {
    ...base,
    customFields: Array.isArray((input as any).customFields) ? (input as any).customFields : [],
  }

  for (const [key, value] of Object.entries(input as Record<string, unknown>)) {
    if (key === 'customFields') {
      continue
    }
    clone[key] = value
  }

  return clone
}

export const clonePieceStructure = (input: any): PieceModelStructure => {
  try {
    const cloned = JSON.parse(JSON.stringify(input ?? defaultPieceStructure()))
    return ensurePieceStructureShape(cloned)
  } catch (error) {
    return defaultPieceStructure()
  }
}

const sanitizePieceCustomFields = (fields: any[]): PieceModelCustomField[] => {
  if (!Array.isArray(fields)) {
    return []
  }

  return fields
    .map((field) => {
      const name = typeof field?.name === 'string' ? field.name.trim() : ''
      if (!name) {
        return null
      }

      const type = typeof field?.type === 'string' && field.type ? field.type : 'text'
      const required = !!field?.required

      let options: string[] | undefined
      if (type === 'select') {
        const rawOptions = typeof field?.optionsText === 'string'
          ? field.optionsText
          : Array.isArray(field?.options)
            ? field.options.join('\n')
            : ''
        const parsed = rawOptions
          .split(/\r?\n/)
          .map((option) => option.trim())
          .filter((option) => option.length > 0)
        options = parsed.length > 0 ? parsed : undefined
      }

      const result: PieceModelCustomField = { name, type, required }
      if (options) {
        result.options = options
      }
      return result
    })
    .filter((field): field is PieceModelCustomField => !!field)
}

export const normalizePieceStructureForSave = (input: any): PieceModelStructure => {
  const source = clonePieceStructure(input)
  return {
    ...Object.fromEntries(
      Object.entries(source).filter(([key]) => key !== 'customFields'),
    ),
    customFields: sanitizePieceCustomFields(source.customFields),
  }
}

const hydratePieceCustomFields = (fields: any[]): PieceModelStructureEditorField[] => {
  if (!Array.isArray(fields)) {
    return []
  }

  return fields.map((field) => ({
    name: field?.name ?? '',
    type: field?.type ?? 'text',
    required: !!field?.required,
    options: Array.isArray(field?.options) ? field.options : undefined,
    optionsText: Array.isArray(field?.options) ? field.options.join('\n') : (field?.optionsText ?? ''),
  }))
}

export const hydratePieceStructureForEditor = (input: any): PieceModelStructureForEditor => {
  const source = clonePieceStructure(input)
  const payload: PieceModelStructureForEditor = {
    ...Object.fromEntries(
      Object.entries(source).filter(([key]) => key !== 'customFields'),
    ),
    customFields: hydratePieceCustomFields(source.customFields),
  }
  return payload
}

export const formatPieceStructurePreview = (structure: any) => {
  if (!structure || typeof structure !== 'object') {
    return 'Aucun champ personnalisé'
  }

  const customFields = Array.isArray((structure as any).customFields)
    ? (structure as any).customFields.length
    : 0

  if (!customFields) {
    return 'Aucun champ personnalisé'
  }

  return `${customFields} champ(s) personnalisé(s)`
}