<template>
    <div class="px-[86px]">
        <div class="flex items-center justify-start gap-6 relative mb-8">
            <Icon
                @click="router.push('/entry-exit')"
                name="gg:arrow-left-o"
                size="44"
                class="cursor-pointer text-primary-500 absolute -left-[60px]"
            />
            <div>
                <h1 class="font-bold text-3xl uppercase text-primary-500">
                    Entrée bovins {{ reception?.identificationNumber ?? `#${receptionId}` }}
                </h1>
                <p class="text-sm text-slate-600 mt-1">
                    {{ reception?.supplier?.name ?? '—' }} · Bovins déclarés : {{ declaredCount }} · Bovins saisis : {{ savedBovines.length }}
                </p>
            </div>
        </div>

        <form
            class="grid grid-cols-4 gap-4 mb-6 items-end"
            @submit.prevent="addBovine"
        >
            <UiTextInput
                v-model="form.nationalNumber"
                label="Numéro national"
                required
            />
            <UiNumberInput
                v-model="form.receivedWeight"
                label="Poids à l'arrivée (kg)"
                :min="1"
                required
            />
            <UiDateMaskedInput
                v-model="form.arrivalDate"
                label="Date d'arrivée"
                required
            />
            <UiSelect
                v-model="form.supplierId"
                label="Vendeur"
                :options="supplierOptions"
                required
            />
            <UiNumberInput
                v-model="form.pricePerKg"
                label="Prix au kilo (€)"
                :min="0"
                :step="0.01"
                required
            />
            <UiSelect
                v-model="form.buildingId"
                label="Bâtiment"
                :options="buildingOptions"
                required
            />
            <UiSelect
                v-model="form.caseId"
                label="Case"
                :options="caseOptions"
                :disabled="!form.buildingId"
                required
            />
            <UiButton
                type="submit"
                class="text-md font-bold uppercase bg-primary-500 text-white h-[50px]"
                :disabled="!isFormValid || isAdding"
                :loading="isAdding"
            >
                Ajouter
            </UiButton>
        </form>

        <div class="text-slate-400 italic mt-6">Tableau récap à venir</div>

        <div class="flex justify-end mt-8 mb-16">
            <UiButton
                type="button"
                class="text-md font-bold uppercase bg-primary-500 text-white h-[50px] px-8"
                disabled
            >
                Valider l'entrée
            </UiButton>
        </div>
    </div>
</template>

<script setup lang="ts">
import type { ReceptionData } from '~/services/dto/reception-data'
import type { BovineData } from '~/services/dto/bovine-data'
import type { SupplierData } from '~/services/dto/supplier-data'
import type { BuildingData } from '~/services/dto/building-data'
import { getSupplierList } from '~/services/supplier'
import { getBuildingList } from '~/services/building'

const route = useRoute()
const router = useRouter()
const api = useApi()

const receptionId = computed(() => Number(route.params.id))

const reception = ref<ReceptionData | null>(null)
const suppliers = ref<SupplierData[]>([])
const buildings = ref<BuildingData[]>([])
const savedBovines = ref<BovineData[]>([])

const isAdding = ref(false)

interface FormState {
    nationalNumber: string
    receivedWeight: number | null
    arrivalDate: string
    supplierId: string | number | null
    pricePerKg: number | null
    buildingId: string | number | null
    caseId: string | number | null
}

const initialForm = (): FormState => ({
    nationalNumber: '',
    receivedWeight: null,
    arrivalDate: reception.value?.receptionDate?.slice(0, 10) ?? '',
    supplierId: reception.value?.supplier?.id ?? null,
    pricePerKg: null,
    buildingId: reception.value?.buildings?.[0]?.id ?? null,
    caseId: null
})

const form = reactive<FormState>(initialForm())

const supplierOptions = computed(() =>
    suppliers.value.map(s => ({ value: s.id, label: s.name }))
)

const buildingOptions = computed(() =>
    buildings.value.map(b => ({ value: b.id, label: b.label }))
)

const caseOptions = computed(() => {
    const building = buildings.value.find(b => b.id === Number(form.buildingId))
    if (!building?.buildingCases) return []
    return [...building.buildingCases]
        .sort((a, b) => (a.caseNumber ?? 0) - (b.caseNumber ?? 0))
        .map(c => ({
            value: c.id,
            label: `Case ${c.caseNumber ?? c.code ?? c.id}`
        }))
})

watch(() => form.buildingId, (newVal, oldVal) => {
    if (newVal !== oldVal) form.caseId = null
})

const declaredCount = computed(() => {
    if (!reception.value) return 0
    const fromTypes = (reception.value.bovinesTypes ?? []).reduce((sum: number, bt: any) => {
        return sum + (typeof bt.quantity === 'number' ? bt.quantity : 0)
    }, 0)
    const fromOther = parseInt(reception.value.bovineDetail ?? '0', 10) || 0
    return fromTypes + fromOther
})

const isFormValid = computed(() =>
    form.nationalNumber.trim() !== ''
    && (form.receivedWeight ?? 0) > 0
    && (form.pricePerKg ?? 0) > 0
    && form.arrivalDate !== ''
    && form.supplierId !== null
    && form.buildingId !== null
    && form.caseId !== null
)

const resetForm = () => {
    Object.assign(form, initialForm())
}

const loadReception = async () => {
    reception.value = await api.get<ReceptionData>(`receptions/${receptionId.value}`)
    resetForm()
}

const loadSavedBovines = async () => {
    const response = await api.get<{ 'hydra:member'?: BovineData[] } | BovineData[]>(
        `bovines?reception=${receptionId.value}`,
        {},
        { toast: false }
    )
    savedBovines.value = Array.isArray(response)
        ? response
        : (response['hydra:member'] ?? [])
}

const focusFirstField = () => {
    const el = document.querySelector<HTMLInputElement>('form input[type="text"]')
    el?.focus()
}

const addBovine = async () => {
    if (!isFormValid.value || isAdding.value) return

    isAdding.value = true
    try {
        const payload = {
            nationalNumber: form.nationalNumber.trim(),
            receivedWeight: form.receivedWeight,
            pricePerKg: form.pricePerKg,
            arrivalDate: form.arrivalDate,
            supplier: `/api/suppliers/${form.supplierId}`,
            buildingCase: `/api/building_cases/${form.caseId}`,
            reception: `/api/receptions/${receptionId.value}`
        }

        await api.post<BovineData>('bovines', payload, {
            headers: { 'Content-Type': 'application/ld+json' }
        })

        await loadSavedBovines()
        resetForm()
        await nextTick()
        focusFirstField()
    } finally {
        isAdding.value = false
    }
}

onMounted(async () => {
    [suppliers.value, buildings.value] = await Promise.all([
        getSupplierList(),
        getBuildingList()
    ])
    await loadReception()
    await loadSavedBovines()
})
</script>
