<template>
    <form @submit.prevent="validate">
        <div class="grid grid-cols-2 items-start gap-y-8 gap-x-40 mb-16">
            <h1 class="font-bold text-5xl uppercase col-start-1 row-start-1">Réception</h1>
            <!--    Nom de l'utilisateur       -->
            <UiSelect
                id="reception-user"
                v-model="form.userId"
                label="Nom de l'utilisateur"
                :options="users.map((user) => ({
                    value: String(user.id),
                    label: user.username
                }))"
                :loading="isLoadingUsers"
                wrapper-class="col-start-1 row-start-2"
            />
            <!--    Date de réception        -->
            <UiDateInput
                id="reception-date"
                v-model="form.receptionDate"
                label="Date de réception"
                wrapper-class="col-start-1 row-start-3"
            />
            <!--    Type de réception        -->
            <UiSelect
                id="reception-type"
                v-model="form.receptionTypeId"
                label="Type de réception"
                :options="receptionTypes.map((type) => ({
                    value: String(type.id),
                    label: type.label
                }))"
                wrapper-class="col-start-1 row-start-4"
            />
            <!--    Fournisseur        -->
            <UiSelect
                id="reception-supplier"
                v-model="form.supplierId"
                label="Fournisseur"
                :options="suppliers.map((supplier) => ({
                    value: String(supplier.id),
                    label: supplier.name
                }))"
                :loading="isLoadingSuppliers"
                wrapper-class="col-start-1 row-start-5"
            />
            <!--    Adresse fournisseur        -->
            <UiSelect
                id="reception-address"
                v-model="form.addressId"
                label="Adresse"
                :options="supplierAddresses.map((address) => ({
                    value: String(address.id),
                    label: address.fullAddress
                }))"
                :disabled="isLoadingSuppliers || supplierAddresses.length === 0"
                wrapper-class="col-start-2 row-start-1"
            />
            <!--    Camion        -->
            <UiSelect
                id="reception-truck"
                v-model="form.truckId"
                label="Camion"
                :options="trucks.map((truck) => ({
                    value: String(truck.id),
                    label: truck.name
                }))"
                :loading="isLoadingTrucks"
                wrapper-class="col-start-2 row-start-2"
            />
            <!--    Transporteur        -->
            <UiSelect
                id="reception-carrier"
                v-model="form.carrierId"
                label="Transporteur"
                :options="carriers.map((carrier) => ({
                    value: String(carrier.id),
                    label: carrier.name
                }))"
                :loading="isLoadingCarriers"
                select-class="h-[34px]"
                wrapper-class="col-start-2 row-start-3"
            />
            <!--    Chauffeur (LIOT)        -->
            <UiSelect
                id="reception-driver"
                v-model="form.driverId"
                label="Nom du chauffeur si LIOT"
                :options="filteredDrivers.map((driver) => ({
                    value: String(driver.id),
                    label: driver.name
                }))"
                :loading="isLoadingDrivers"
                wrapper-class="col-start-2 row-start-4"
            />
            <!--    Plaque d'immatriculation       -->
            <div v-if="!isLiotCarrier" class="col-start-2 row-start-5">
                <UiLicensePlateInput
                    v-model="form.licensePlate"
                    v-model:allowAny="allowAnyLicensePlate"
                />
            </div>
            <!--    Immatriculation (LIOT)        -->
            <UiSelect
                v-if="isLiotCarrier"
                id="reception-vehicle"
                v-model="form.vehicleId"
                label="Immatriculation"
                :options="filteredVehicles.map((vehicle) => ({
                    value: String(vehicle.id),
                    label: vehicle.plate
                }))"
                :loading="isLoadingVehicles"
                :disabled="isLoadingVehicles || filteredVehicles.length === 0"
                wrapper-class="col-start-2 row-start-5"
            />
        </div>
        <div class="flex justify-center">
            <button
                type="submit"
                class="text-xl uppercase bg-primary-500 text-white h-[50px] w-[272px] justify-self-end"
            >Peser
            </button>
        </div>
    </form>
</template>

<script setup lang="ts">
import {useReceptionStore} from '~/stores/reception'
import type {ReceptionTypeData} from '~/services/dto/reception-type-data'
import {getReceptionTypeList} from '~/services/reception-type'
import type {UserData} from '~/services/dto/user-data'
import {getUsers} from '~/services/auth'
import {useAuthStore} from '~/stores/auth'
import type {SupplierData} from '~/services/dto/supplier-data'
import {getSupplierList} from '~/services/supplier'
import type {TruckData} from '~/services/dto/truck-data'
import {getTruckList} from '~/services/truck'
import type {CarrierData} from '~/services/dto/carrier-data'
import {getCarrierList} from '~/services/carrier'
import type {DriverData} from '~/services/dto/driver-data'
import {getDriverList} from '~/services/driver'
import type {VehicleData} from '~/services/dto/vehicle-data'
import {getVehicleList} from '~/services/vehicle'

type ReceptionFormData = {
    licensePlate: string
    receptionDate: string
    receptionTypeId: string
    userId: string
    supplierId: string
    addressId: string
    truckId: string
    carrierId: string
    driverId: string
    vehicleId: string
}

const router = useRouter()
const receptionStore = useReceptionStore()
const form = reactive<ReceptionFormData>({
    licensePlate: '',
    receptionDate: new Date().toISOString().slice(0, 10),
    receptionTypeId: '',
    userId: '',
    supplierId: '',
    addressId: '',
    truckId: '',
    carrierId: '',
    driverId: '',
    vehicleId: ''
})
const allowAnyLicensePlate = ref(false)
const receptionTypes = ref<ReceptionTypeData[]>([])
const users = ref<UserData[]>([])
const isLoadingUsers = ref(false)
const suppliers = ref<SupplierData[]>([])
const isLoadingSuppliers = ref(false)
const trucks = ref<TruckData[]>([])
const isLoadingTrucks = ref(false)
const carriers = ref<CarrierData[]>([])
const isLoadingCarriers = ref(false)
const drivers = ref<DriverData[]>([])
const isLoadingDrivers = ref(false)
const vehicles = ref<VehicleData[]>([])
const isLoadingVehicles = ref(false)
const authStore = useAuthStore()
const isHydrating = ref(false)
const liotCode = 'LIOT'
const selectedCarrier = computed(() =>
    carriers.value.find((carrier) => String(carrier.id) === form.carrierId) ?? null
)
const isLiotCarrier = computed(() => selectedCarrier.value?.code === liotCode)
const supplierAddresses = computed(() => {
    const supplierId = Number(form.supplierId)
    if (!Number.isFinite(supplierId)) {
        return []
    }
    return suppliers.value.find((supplier) => supplier.id === supplierId)?.addresses ?? []
})
const filteredDrivers = computed(() => {
    if (!form.carrierId) {
        return []
    }
    return drivers.value.filter((driver) => String(driver.carrier?.id) === form.carrierId)
})
const filteredVehicles = computed(() => {
    if (!form.carrierId) {
        return []
    }
    return vehicles.value.filter(
        (vehicle) =>
            String(vehicle.carrier?.id) === form.carrierId &&
            (!form.truckId || String(vehicle.truck?.id) === form.truckId)
    )
})

watch(
    () => receptionStore.current,
    (reception) => {
        isHydrating.value = true
        form.licensePlate = reception?.licensePlate ?? ''
        form.receptionDate = reception?.receptionDate ?? new Date().toISOString().slice(0, 10)
        form.receptionTypeId = reception?.receptionType?.id
            ? String(reception.receptionType.id)
            : ''
        form.userId = reception?.user?.id
            ? String(reception.user.id)
            : form.userId
        form.supplierId = reception?.supplier?.id
            ? String(reception.supplier.id)
            : ''
        form.addressId = reception?.address?.id
            ? String(reception.address.id)
            : ''
        form.truckId = reception?.truck?.id
            ? String(reception.truck.id)
            : ''
        form.carrierId = reception?.carrier?.id
            ? String(reception.carrier.id)
            : ''
        form.driverId = reception?.driver?.id
            ? String(reception.driver.id)
            : ''
        isHydrating.value = false
    },
    {immediate: true}
)

const loadUsers = async () => {
    isLoadingUsers.value = true
    try {
        users.value = await getUsers()
    } finally {
        isLoadingUsers.value = false
    }
}

const loadSuppliers = async () => {
    isLoadingSuppliers.value = true
    try {
        suppliers.value = await getSupplierList()
    } finally {
        isLoadingSuppliers.value = false
    }
}

const loadTrucks = async () => {
    isLoadingTrucks.value = true
    try {
        trucks.value = await getTruckList()
    } finally {
        isLoadingTrucks.value = false
    }
}

const loadCarriers = async () => {
    isLoadingCarriers.value = true
    try {
        carriers.value = await getCarrierList()
    } finally {
        isLoadingCarriers.value = false
    }
}

const loadDrivers = async () => {
    isLoadingDrivers.value = true
    try {
        drivers.value = await getDriverList()
    } finally {
        isLoadingDrivers.value = false
    }
}

const loadVehicles = async () => {
    isLoadingVehicles.value = true
    try {
        vehicles.value = await getVehicleList()
    } finally {
        isLoadingVehicles.value = false
    }
}

const setDefaultUser = () => {
    if (form.userId) {
        return
    }
    if (authStore.user?.id) {
        form.userId = String(authStore.user.id)
    }
}

onMounted(async () => {
    receptionTypes.value = await getReceptionTypeList()
    await loadUsers()
    await loadSuppliers()
    await loadTrucks()
    await loadCarriers()
    await loadDrivers()
    await loadVehicles()
    await authStore.ensureSession()
    setDefaultUser()
})

watch(
    () => [form.supplierId, suppliers.value],
    () => {
        if (!form.supplierId) {
            form.addressId = ''
            return
        }
        if (!form.addressId && supplierAddresses.value.length === 1) {
            form.addressId = String(supplierAddresses.value[0].id)
            return
        }
        if (!form.addressId) {
            return
        }
        const matches = supplierAddresses.value.some(
            (address) => String(address.id) === form.addressId
        )
        if (!matches) {
            form.addressId = ''
        }
    },
    {immediate: true}
)

watch(
    () => form.carrierId,
    () => {
        if (isHydrating.value) {
            return
        }
        if (!form.carrierId) {
            form.driverId = ''
            form.vehicleId = ''
            return
        }
        if (!isLiotCarrier.value) {
            form.driverId = ''
            form.vehicleId = ''
            return
        }
        if (filteredDrivers.value.length === 1) {
            form.driverId = String(filteredDrivers.value[0].id)
        }
        if (filteredVehicles.value.length === 1) {
            form.vehicleId = String(filteredVehicles.value[0].id)
        }
    },
    {immediate: true}
)

watch(
    () => [form.truckId, form.carrierId, vehicles.value],
    () => {
        if (!isLiotCarrier.value) {
            return
        }
        if (filteredVehicles.value.length === 1) {
            form.vehicleId = String(filteredVehicles.value[0].id)
            return
        }
        if (!form.vehicleId) {
            return
        }
        const matches = filteredVehicles.value.some(
            (vehicle) => String(vehicle.id) === form.vehicleId
        )
        if (!matches) {
            form.vehicleId = ''
        }
    },
    {immediate: true}
)

watch(
    () => [form.vehicleId, form.carrierId, vehicles.value],
    () => {
        if (!isLiotCarrier.value) {
            return
        }
        const selected = filteredVehicles.value.find(
            (vehicle) => String(vehicle.id) === form.vehicleId
        )
        if (selected) {
            form.licensePlate = selected.plate
            allowAnyLicensePlate.value = false
        } else if (form.vehicleId === '') {
            form.licensePlate = ''
        }
    }
)

watch(
    () => [form.licensePlate, form.carrierId, vehicles.value],
    () => {
        if (!isLiotCarrier.value || form.vehicleId) {
            return
        }
        const match = filteredVehicles.value.find(
            (vehicle) => vehicle.plate === form.licensePlate
        )
        if (match) {
            form.vehicleId = String(match.id)
        }
    }
)

async function validate() {
    const normalizedLicensePlate = form.licensePlate.trim()
    const normalizedReceptionDate = form.receptionDate.trim()
    const normalizedReceptionTypeId = form.receptionTypeId.trim()
    const normalizedUserId = form.userId.trim()
    const normalizedSupplierId = form.supplierId.trim()
    const normalizedAddressId = form.addressId.trim()
    const normalizedTruckId = form.truckId.trim()
    const normalizedCarrierId = form.carrierId.trim()
    const normalizedDriverId = form.driverId.trim()
    const receptionTypeIri = normalizedReceptionTypeId
        ? `/api/reception_types/${normalizedReceptionTypeId}`
        : null
    const userIri = normalizedUserId
        ? `/api/users/${normalizedUserId}`
        : null
    const supplierIri = normalizedSupplierId
        ? `/api/suppliers/${normalizedSupplierId}`
        : null
    const addressIri = normalizedAddressId
        ? `/api/addresses/${normalizedAddressId}`
        : null
    const truckIri = normalizedTruckId
        ? `/api/trucks/${normalizedTruckId}`
        : null
    const carrierIri = normalizedCarrierId
        ? `/api/carriers/${normalizedCarrierId}`
        : null
    const driverIri = normalizedDriverId
        ? `/api/drivers/${normalizedDriverId}`
        : null

    const basePayload = {
        licensePlate: normalizedLicensePlate,
        receptionDate: normalizedReceptionDate,
        receptionType: receptionTypeIri,
        user: userIri,
        supplier: supplierIri,
        address: addressIri,
        truck: truckIri,
        carrier: carrierIri
    }

    const payload = {
        ...basePayload,
        ...(isLiotCarrier.value && driverIri ? {driver: driverIri} : {})
    }

    if (!receptionStore.current) {
        const created = await receptionStore.createReception({
            currentStep: 1,
            ...payload
        })
        if (created) {
            await router.push(`/reception/${created.id}`)
        }
        return
    }

    const nextStep = receptionStore.current.currentStep + 1
    await receptionStore.updateReception(receptionStore.current.id, {
        currentStep: nextStep,
        ...payload
    })
}

</script>
