"use client";

import { zodResolver } from "@hookform/resolvers/zod";
import { Loader2, Plus, UserPlus } from "lucide-react";
import { useEffect, useState } from "react";
import { Controller, useForm } from "react-hook-form";
import { toast } from "sonner";
import { ResponsiveDialog } from "@/components/responsive-dialog";
import { Badge } from "@/components/ui/badge";
import { Button } from "@/components/ui/button";
import {
  Card,
  CardAction,
  CardContent,
  CardDescription,
  CardHeader,
  CardTitle,
} from "@/components/ui/card";
import { Field, FieldDescription, FieldError, FieldGroup, FieldLabel } from "@/components/ui/field";
import { Input } from "@/components/ui/input";
import {
  Select,
  SelectContent,
  SelectItem,
  SelectTrigger,
  SelectValue,
} from "@/components/ui/select";
import { MembersList } from "@/features/households/components/members-list";
import type { AdminHouseholdRow, UserOption } from "@/features/households/service";
import { HOUSEHOLD_ROLES } from "@/features/households/types";
import { tr } from "@/i18n/tr";
import {
  addMemberSchema,
  householdCreateSchema,
  type AddMemberInput,
  type HouseholdCreateInput,
} from "@/shared/schemas/household";
import {
  addMemberAction,
  adminRemoveMemberAction,
  adminSetMemberRoleAction,
  createHouseholdAction,
} from "../actions";
import { UserSelect } from "./user-select";

const t = tr.adminHouseholds;

function CreateHouseholdDialog({
  open,
  onOpenChange,
  users,
}: {
  open: boolean;
  onOpenChange: (o: boolean) => void;
  users: UserOption[];
}) {
  const form = useForm<HouseholdCreateInput>({
    resolver: zodResolver(householdCreateSchema),
    defaultValues: { name: "", ownerUserId: "" },
  });
  useEffect(() => {
    if (open) form.reset({ name: "", ownerUserId: "" });
  }, [open, form]);

  async function onSubmit(values: HouseholdCreateInput) {
    const result = await createHouseholdAction(values);
    if (result.ok) {
      toast.success(t.created(values.name));
      onOpenChange(false);
    } else {
      form.setError("root", { message: result.error });
    }
  }

  return (
    <ResponsiveDialog
      open={open}
      onOpenChange={onOpenChange}
      title={t.createTitle}
      description={t.createDescription}
      footer={
        <>
          <Button variant="outline" type="button" onClick={() => onOpenChange(false)}>
            {tr.common.cancel}
          </Button>
          <Button type="submit" form="household-create" disabled={form.formState.isSubmitting}>
            {form.formState.isSubmitting ? <Loader2 className="animate-spin" /> : null}
            {tr.common.create}
          </Button>
        </>
      }
    >
      <form id="household-create" onSubmit={form.handleSubmit(onSubmit)} noValidate>
        <FieldGroup>
          <Controller
            name="name"
            control={form.control}
            render={({ field, fieldState }) => (
              <Field data-invalid={fieldState.invalid}>
                <FieldLabel htmlFor="hh-create-name">{t.name}</FieldLabel>
                <Input {...field} id="hh-create-name" aria-invalid={fieldState.invalid} />
                {fieldState.invalid ? <FieldError errors={[fieldState.error]} /> : null}
              </Field>
            )}
          />
          <Controller
            name="ownerUserId"
            control={form.control}
            render={({ field, fieldState }) => (
              <Field data-invalid={fieldState.invalid}>
                <FieldLabel htmlFor="hh-create-owner">{t.owner}</FieldLabel>
                <UserSelect
                  id="hh-create-owner"
                  users={users}
                  value={field.value}
                  onChange={field.onChange}
                  invalid={fieldState.invalid}
                />
                {fieldState.invalid ? <FieldError errors={[fieldState.error]} /> : null}
              </Field>
            )}
          />
          {form.formState.errors.root ? (
            <FieldError>{form.formState.errors.root.message}</FieldError>
          ) : null}
        </FieldGroup>
      </form>
    </ResponsiveDialog>
  );
}

function AddMemberDialog({
  household,
  users,
  onOpenChange,
}: {
  household: AdminHouseholdRow | null;
  users: UserOption[];
  onOpenChange: (o: boolean) => void;
}) {
  const form = useForm<AddMemberInput>({
    resolver: zodResolver(addMemberSchema),
    defaultValues: { userId: "", role: "member" },
  });
  useEffect(() => {
    if (household) form.reset({ userId: "", role: "member" });
  }, [household, form]);

  async function onSubmit(values: AddMemberInput) {
    if (!household) return;
    const result = await addMemberAction(household.id, values);
    if (result.ok) {
      toast.success(t.memberAdded(users.find((u) => u.id === values.userId)?.name ?? ""));
      onOpenChange(false);
    } else {
      form.setError("root", { message: result.error });
    }
  }

  return (
    <ResponsiveDialog
      open={Boolean(household)}
      onOpenChange={onOpenChange}
      title={household ? t.addMemberTitle(household.name) : t.addMember}
      description={t.addMemberDescription}
      footer={
        <>
          <Button variant="outline" type="button" onClick={() => onOpenChange(false)}>
            {tr.common.cancel}
          </Button>
          <Button type="submit" form="household-add-member" disabled={form.formState.isSubmitting}>
            {form.formState.isSubmitting ? <Loader2 className="animate-spin" /> : null}
            {t.addMember}
          </Button>
        </>
      }
    >
      <form id="household-add-member" onSubmit={form.handleSubmit(onSubmit)} noValidate>
        <FieldGroup>
          <Controller
            name="userId"
            control={form.control}
            render={({ field, fieldState }) => (
              <Field data-invalid={fieldState.invalid}>
                <FieldLabel htmlFor="hh-member-user">{t.user}</FieldLabel>
                <UserSelect
                  id="hh-member-user"
                  users={users}
                  value={field.value}
                  onChange={field.onChange}
                  invalid={fieldState.invalid}
                />
                {fieldState.invalid ? <FieldError errors={[fieldState.error]} /> : null}
              </Field>
            )}
          />
          <Controller
            name="role"
            control={form.control}
            render={({ field }) => (
              <Field>
                <FieldLabel htmlFor="hh-member-role">{t.role}</FieldLabel>
                <Select value={field.value} onValueChange={field.onChange}>
                  <SelectTrigger
                    id="hh-member-role"
                    className="w-full"
                    aria-describedby="hh-member-role-hint"
                  >
                    <SelectValue>{tr.household.roles[field.value]}</SelectValue>
                  </SelectTrigger>
                  <SelectContent>
                    {HOUSEHOLD_ROLES.map((r) => (
                      <SelectItem key={r} value={r}>
                        {tr.household.roles[r]}
                      </SelectItem>
                    ))}
                  </SelectContent>
                </Select>
                <FieldDescription id="hh-member-role-hint">
                  {tr.household.roleHints[field.value]}
                </FieldDescription>
              </Field>
            )}
          />
          {form.formState.errors.root ? (
            <FieldError>{form.formState.errors.root.message}</FieldError>
          ) : null}
        </FieldGroup>
      </form>
    </ResponsiveDialog>
  );
}

export function HouseholdsAdmin({
  households,
  users,
  currentUserId,
}: {
  households: AdminHouseholdRow[];
  users: UserOption[];
  currentUserId: string;
}) {
  const [creating, setCreating] = useState(false);
  const [addingTo, setAddingTo] = useState<AdminHouseholdRow | null>(null);

  return (
    <div className="flex flex-col gap-4">
      <div className="flex flex-wrap items-center gap-3">
        <p className="max-w-2xl text-sm text-muted-foreground">{t.privacyNote}</p>
        <Button className="ml-auto" onClick={() => setCreating(true)}>
          <Plus />
          {t.newHousehold}
        </Button>
      </div>

      {households.length === 0 ? (
        <p className="rounded-xl border border-dashed p-8 text-center text-muted-foreground">
          {t.empty}
        </p>
      ) : (
        <div className="grid gap-4 xl:grid-cols-2">
          {households.map((h) => (
            <Card key={h.id}>
              <CardHeader>
                <CardTitle>{h.name}</CardTitle>
                <CardDescription className="flex flex-wrap items-center gap-2">
                  <span>{t.members(h.memberCount)}</span>
                  {h.owners.length ? (
                    <span>
                      · {t.owners}: {h.owners.join(", ")}
                    </span>
                  ) : (
                    <Badge variant="destructive">{t.noOwner}</Badge>
                  )}
                </CardDescription>
                <CardAction>
                  <Button variant="outline" size="sm" onClick={() => setAddingTo(h)}>
                    <UserPlus />
                    {t.addMember}
                  </Button>
                </CardAction>
              </CardHeader>
              <CardContent>
                <MembersList
                  members={h.members}
                  householdName={h.name}
                  currentUserId={currentUserId}
                  canManage
                  onSetRole={(userId, role) => adminSetMemberRoleAction(h.id, userId, role)}
                  onRemove={(userId) => adminRemoveMemberAction(h.id, userId)}
                />
              </CardContent>
            </Card>
          ))}
        </div>
      )}

      <CreateHouseholdDialog open={creating} onOpenChange={setCreating} users={users} />
      <AddMemberDialog
        household={addingTo}
        users={users}
        onOpenChange={(o) => !o && setAddingTo(null)}
      />
    </div>
  );
}