"use client";

import { useState } from "react";
import Link from "next/link";
import { useParams } from "next/navigation";
import { useMutation, useQuery, useQueryClient } from "@tanstack/react-query";
import { toast } from "sonner";
import { Button, Card, CardContent, ConfirmDialog, Dialog, Input, PageHeader, Select, StatCard, Textarea } from "@/components/ds";
import { useTenantId } from "@/hooks/useTenantId";
import { workspaceApi } from "@/modules/workspace/services/workspace-api";
import { PRIORITY, PROJECT_STATUS, displayPerson, labelOf } from "@/modules/workspace/labels";
import { StatusChip } from "@/modules/workspace/components/StatusChip";
import { CommentThread } from "@/modules/workspace/components/CommentThread";
import { IdentityUserSelect } from "@/modules/workspace/components/IdentityUserSelect";
import { WorkspacePageError, WorkspacePageLoader } from "@/modules/workspace/pages/shared";

export const WorkspaceProjectDetail = function WorkspaceProjectDetailPage() {
  const params = useParams<{ id: string }>();
  const { tenantId } = useTenantId();
  const queryClient = useQueryClient();
  const [editOpen, setEditOpen] = useState(false);
  const [archiveOpen, setArchiveOpen] = useState(false);
  const [form, setForm] = useState({
    name: "",
    description: "",
    status: "planning",
    priority: "medium",
    team_id: "",
    owner_user_id: "",
    start_date: "",
    due_date: "",
  });
  const project = useQuery({
    queryKey: ["workspace", tenantId, "project", params.id],
    queryFn: () => workspaceApi.projects.get(tenantId!, params.id),
    enabled: !!tenantId && !!params.id,
  });
  const teams = useQuery({
    queryKey: ["workspace", tenantId, "teams", project.data?.work_hub_id],
    queryFn: () => workspaceApi.teams.list(tenantId!, String(project.data?.work_hub_id || "")),
    enabled: !!tenantId && !!project.data?.work_hub_id,
  });
  const update = useMutation({
    mutationFn: (body: Record<string, unknown>) => workspaceApi.projects.update(tenantId!, params.id, body),
    onSuccess: () => {
      toast.success("پروژه به‌روز شد");
      setEditOpen(false);
      void queryClient.invalidateQueries({ queryKey: ["workspace", tenantId, "project", params.id] });
    },
    onError: (err) => toast.error(err instanceof Error ? err.message : "به‌روزرسانی ناموفق بود"),
  });

  if (!tenantId || project.isLoading) return <WorkspacePageLoader />;
  if (project.error) return <WorkspacePageError error={project.error} onRetry={() => project.refetch()} />;
  const row = project.data!;
  const progress = row.progress || { total: 0, done: 0, percent: 0 };

  return (
    <div className="space-y-6">
      <PageHeader
        title={String(row.name || "پروژه")}
        description={String(row.description || "جزئیات، پیشرفت و گفتگو")}
        actions={
          <div className="flex gap-2">
            <Button
              variant="outline"
              onClick={() => {
                setForm({
                  name: String(row.name || ""),
                  description: String(row.description || ""),
                  status: String(row.status || "planning"),
                  priority: String(row.priority || "medium"),
                  team_id: String(row.team_id || ""),
                  owner_user_id: String(row.owner_user_id || ""),
                  start_date: String(row.start_date || "").slice(0, 10),
                  due_date: String(row.due_date || "").slice(0, 10),
                });
                setEditOpen(true);
              }}
            >
              ویرایش
            </Button>
            <Button variant="outline" onClick={() => setArchiveOpen(true)}>
              بایگانی
            </Button>
          </div>
        }
      />
      <div className="grid gap-4 md:grid-cols-3">
        <StatCard label="پیشرفت وظایف" value={`${progress.percent}٪`} hint={`${progress.done} از ${progress.total}`} />
        <StatCard label="مسئول" value={displayPerson(String(row.owner_user_id || ""))} />
        <StatCard label="اولویت" value={labelOf(PRIORITY, String(row.priority || ""))} />
      </div>
      <div className="flex items-center gap-2">
        <StatusChip value={String(row.status || "")} kind="project" />
        <StatusChip value={String(row.priority || "")} kind="priority" />
      </div>
      <div className="grid gap-4 lg:grid-cols-2">
        <Card>
          <CardContent className="space-y-2 p-5">
            <div className="flex items-center justify-between">
              <h2 className="font-semibold text-secondary">وظایف</h2>
              <Link href="/workspace/tasks" className="text-sm text-primary">کانبان</Link>
            </div>
            {(row.tasks ?? []).length === 0 ? (
              <p className="text-sm text-[var(--muted)]">وظیفه‌ای ثبت نشده است.</p>
            ) : (
              (row.tasks ?? []).map((task) => (
                <div key={String(task.id)} className="flex items-center justify-between text-sm">
                  <span>{String(task.title || "وظیفه")}</span>
                  <StatusChip value={String(task.status || "")} kind="task" />
                </div>
              ))
            )}
          </CardContent>
        </Card>
        <Card>
          <CardContent className="space-y-2 p-5">
            <div className="flex items-center justify-between">
              <h2 className="font-semibold text-secondary">محتوا</h2>
              <Link href="/workspace/content" className="text-sm text-primary">استودیو</Link>
            </div>
            {(row.content ?? []).length === 0 ? (
              <p className="text-sm text-[var(--muted)]">محتوایی به این پروژه وصل نیست.</p>
            ) : (
              (row.content ?? []).map((item) => (
                <div key={String(item.id)} className="flex items-center justify-between text-sm">
                  <span>{String(item.title || "محتوا")}</span>
                  <StatusChip value={String(item.status || "")} />
                </div>
              ))
            )}
          </CardContent>
        </Card>
      </div>
      <CommentThread tenantId={tenantId} workHubId={String(row.work_hub_id || "")} subjectType="project" subjectId={params.id} />
      <Dialog open={editOpen} onClose={() => setEditOpen(false)} title="ویرایش پروژه" size="lg">
        <div className="space-y-3">
          <Input value={form.name} onChange={(event) => setForm({ ...form, name: event.target.value })} placeholder="نام پروژه" />
          <Textarea value={form.description} onChange={(event) => setForm({ ...form, description: event.target.value })} placeholder="توضیح" />
          <Select value={form.team_id} onChange={(event) => setForm({ ...form, team_id: event.target.value })}>
            <option value="">بدون تیم</option>
            {(teams.data ?? []).map((team) => (
              <option key={String(team.id)} value={String(team.id)}>{String(team.name)}</option>
            ))}
          </Select>
          <IdentityUserSelect value={form.owner_user_id} onChange={(id) => setForm({ ...form, owner_user_id: id })} emptyLabel="مسئول پروژه" />
          <div className="grid gap-2 md:grid-cols-2">
            <Select value={form.status} onChange={(event) => setForm({ ...form, status: event.target.value })}>
              {Object.entries(PROJECT_STATUS).map(([value, label]) => <option key={value} value={value}>{label}</option>)}
            </Select>
            <Select value={form.priority} onChange={(event) => setForm({ ...form, priority: event.target.value })}>
              {Object.entries(PRIORITY).map(([value, label]) => <option key={value} value={value}>{label}</option>)}
            </Select>
            <Input type="date" value={form.start_date} onChange={(event) => setForm({ ...form, start_date: event.target.value })} />
            <Input type="date" value={form.due_date} onChange={(event) => setForm({ ...form, due_date: event.target.value })} />
          </div>
          <Button className="w-full" disabled={!form.name.trim() || update.isPending} onClick={() => update.mutate(form)}>
            ذخیره
          </Button>
        </div>
      </Dialog>
      <ConfirmDialog
        open={archiveOpen}
        onClose={() => setArchiveOpen(false)}
        onConfirm={() => update.mutate({ status: "archived" })}
        title="بایگانی پروژه"
        confirmLabel="بایگانی"
        danger
        loading={update.isPending}
      />
    </div>
  );
};

export default WorkspaceProjectDetail;