"use client"

import { AlertTriangle, Plus, Save } from "lucide-react"

import { Button } from "@/shared/components/ui/button"
import { Alert, AlertTitle } from "@/shared/components/ui/alert"
import { FieldGroup } from "@/shared/components/ui/field"
import {
    Rhform,
    RhfTextField,
    RhfSelectField,
    RhfAsyncSelectField,
    RhfDateField,
    RhfTimeField,
} from "@/shared/components/form"
import { toast } from "sonner"
import { useAuthApi } from "@/shared/useApi"
import { useResourceForm } from "@/shared/hooks/use-resource-form"
import { useFormMutation } from "@/shared/hooks/use-form-mutation"
import { toRelation, toId } from "@/shared/lib/utils"

import {
    jobCardFormSchema,
    type JobCardFormValues,
    TAX_INCLUSIVE_OPTIONS,
    DISCOUNT_TYPE_OPTIONS,
    DISCOUNT_AT_OPTIONS,
    ESTIMATE_TO_OPTIONS,
    FUEL_LEVEL_OPTIONS,
    JOB_CARD_STATUS_OPTIONS,
} from "./job-card.schema"
import { JOB_CARD_ROUTES, EMPLOYEE_ROUTES, DEPARTMENT_ROUTES } from "@garage/api"
import { RhfCustomerSelectField } from "@/modules/customers/rhf-customer-select-field"
import { RhfVehicleSelectField } from "@/modules/vehicles/rhf-vehicle-select-field"

// ── Props ──

export type JobCardFormProps = {
    resourceId?: string | null
    initialData?: unknown
    onSuccess?: () => void
}

// ── Default values ──

const DEFAULT_VALUES: JobCardFormValues = {
    title: "",
    customer: null,
    vehicle: null,
    department: null,
    service_writer: null,
    status: "check_in",
    estimate_to: "Customer",
    tax_inclusive: "Tax Inclusive",
    discount_type: "no",
    discount_at: "inclusive_of_tax",
    // check_in_date: "",
    // check_in_time: (() => { const n = new Date(); return `${String(n.getHours()).padStart(2,"0")}:${String(n.getMinutes()).padStart(2,"0")}:${String(n.getSeconds()).padStart(2,"0")}` })(),
    km_in: "",
    fuel_level: "",
}

// ── Mapping helpers ──

function mapToFormValues(data: unknown): JobCardFormValues {
    const d = (data as any)?.data ?? data ?? {}

    return {
        title: d.title || "",
        customer: toRelation(d.customer_id, d.customer ? `${d.customer.first_name} ${d.customer.last_name}` : undefined),
        vehicle: toRelation(d.vehicle_id, d.vehicle ? `${d.vehicle.make} ${d.vehicle.model}` : undefined),
        department: toRelation(d.department_id, d.department?.name),
        service_writer: toRelation(d.service_writer_id, d.service_writer ? `${d.service_writer.first_name} ${d.service_writer.last_name}` : undefined),
        status: d.status || "draft",
        estimate_to: d.estimate_to || "Customer",
        tax_inclusive: d.tax_inclusive || "Tax Inclusive",
        discount_type: d.discount_type || "no",
        discount_at: d.discount_at || "inclusive_of_tax",
        check_in_date: d.check_in_date ? d.check_in_date.split("T")[0] : "",
        check_in_time: d.check_in_time ? d.check_in_time.split("T")[0] : "",
        km_in: d.km_in != null ? String(d.km_in) : "",
        fuel_level: d.fuel_level || "",
    }
}

function mapFormToPayload(values: JobCardFormValues) {
    return {
        title: values.title,
        customer_id: toId(values.customer),
        vehicle_id: toId(values.vehicle),
        department_id: toId(values.department),
        service_writer_id: toId(values.service_writer),
        status: values.status || undefined,
        estimate_to: values.estimate_to || undefined,
        tax_inclusive: values.tax_inclusive || undefined,
        discount_type: values.discount_type || undefined,
        discount_at: values.discount_at || undefined,
        check_in_date: values.check_in_date || undefined,
        check_in_time: values.check_in_time || undefined,
        km_in: values.km_in ? Number(values.km_in) : undefined,
        fuel_level: values.fuel_level || undefined,
    }
}

// ── Shared mapOption for async selects ──

const mapLookupOption = (item: any) => ({
    value: String(item.id),
    label: item.name,
})

const mapEmployeeOption = (item: any) => ({
    value: String(item.id),
    label: `${item.first_name} ${item.last_name}`,
})

const STORE_OBJECT = { getOptionValue: (o: any) => o, getOptionLabel: (o: any) => o.label }

// ── Component ──

export function JobCardForm({ resourceId, initialData, onSuccess }: JobCardFormProps) {
    const api = useAuthApi()

    const { form, isEditing } = useResourceForm<JobCardFormValues, any>({
        schema: jobCardFormSchema,
        defaultValues: DEFAULT_VALUES,
        resourceId,
        initialData,
        queryKey: [JOB_CARD_ROUTES.BY_ID, resourceId],
        mapToFormValues,
    })

    const { mutate, error, isPending } = useFormMutation(form, {
        mutationFn: (values: JobCardFormValues) => {
            const payload = mapFormToPayload(values)
            const promise = (isEditing && resourceId
                ? api.jobCards.update(resourceId, payload)
                : api.jobCards.create(payload)) as Promise<any>
            toast.promise(promise, {
                loading: isEditing ? "Updating job card..." : "Creating job card...",
                success: isEditing ? "Job card updated successfully" : "Job card created successfully",
                error: isEditing ? "Failed to update job card" : "Failed to create job card",
            })
            return promise
        },
        onSuccess: () => {
            form.reset()
            onSuccess?.()
        },
    })

    return (
        <Rhform form={form} onSubmit={(values) => mutate(values)}>
            {error && (
                <Alert variant="destructive" className="mb-4">
                    <AlertTriangle className="me-2 h-4 w-4" />
                    <AlertTitle>
                        {isEditing ? "Failed to update job card" : "Failed to create job card"}
                    </AlertTitle>
                    {error.message}
                </Alert>
            )}

            <FieldGroup>
                <RhfTextField name="title" label="Title" placeholder="Job Card 001" required />

                <div className="grid grid-cols-1 gap-4 sm:grid-cols-2">
                    <RhfCustomerSelectField name="customer" />
                    <RhfVehicleSelectField name="vehicle" />
                </div>

                <div className="grid grid-cols-1 gap-4 sm:grid-cols-2">
                    {/* <RhfSelectField
                        name="status"
                        label="Status"
                        placeholder="Select status"
                        options={JOB_CARD_STATUS_OPTIONS}
                    /> */}
                    <RhfSelectField
                        name="estimate_to"
                        label="Estimate To"
                        placeholder="Select estimate to"
                        options={ESTIMATE_TO_OPTIONS}
                    />
                </div>

                <div className="grid grid-cols-1 gap-4 sm:grid-cols-2">
                    <RhfAsyncSelectField
                        name="department"
                        label="Department"
                        placeholder="Select department"
                        queryKey={[DEPARTMENT_ROUTES.INDEX]}
                        listFn={() => api.departments.list()}
                        mapOption={mapLookupOption}
                        {...STORE_OBJECT}
                    />
                    <RhfAsyncSelectField
                        name="service_writer"
                        label="Service Writer"
                        placeholder="Select service writer"
                        queryKey={[EMPLOYEE_ROUTES.INDEX]}
                        listFn={() => api.employees.list()}
                        mapOption={mapEmployeeOption}
                        {...STORE_OBJECT}
                    />
                </div>

                {/* <div className="grid grid-cols-1 gap-4 sm:grid-cols-2">
                    <RhfDateField name="check_in_date" label="Check-in Date" />
                    <RhfTimeField name="check_in_time" label="Check-in Time" withSeconds />
                </div> */}

                <div className="grid grid-cols-1 gap-4 sm:grid-cols-2">
                    <RhfTextField name="km_in" label="KM In" placeholder="50000" type="number" />
                    <RhfSelectField
                        name="fuel_level"
                        label="Fuel Level"
                        placeholder="Select fuel level"
                        options={FUEL_LEVEL_OPTIONS}
                    />
                </div>

                <div className="grid grid-cols-1 gap-4 sm:grid-cols-3">
                    <RhfSelectField
                        name="tax_inclusive"
                        label="Tax"
                        placeholder="Select tax type"
                        options={TAX_INCLUSIVE_OPTIONS}
                    />
                    <RhfSelectField
                        name="discount_type"
                        label="Discount Type"
                        placeholder="Select discount type"
                        options={DISCOUNT_TYPE_OPTIONS}
                    />
                    <RhfSelectField
                        name="discount_at"
                        label="Discount At"
                        placeholder="Select discount at"
                        options={DISCOUNT_AT_OPTIONS}
                    />
                </div>

                <Button type="submit" variant="default" disabled={isPending}>
                    {isEditing ? <Save /> : <Plus />}
                    {isPending
                        ? (isEditing ? "Updating..." : "Creating...")
                        : (isEditing ? "Update Job Card" : "Create Job Card")}
                </Button>
            </FieldGroup>
        </Rhform>
    )
}