"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, Textarea } from "@/components/ds";
import { useTenantId } from "@/hooks/useTenantId";
import { workspaceApi } from "@/modules/workspace/services/workspace-api";
import { ACTIVITY_ACTION, TEAM_ROLE, displayPerson, formatWhen, labelOf } from "@/modules/workspace/labels";
import { IdentityUserSelect } from "@/modules/workspace/components/IdentityUserSelect";
import { CommentThread } from "@/modules/workspace/components/CommentThread";
import { StatusChip } from "@/modules/workspace/components/StatusChip";
import { WorkspacePageError, WorkspacePageLoader } from "@/modules/workspace/pages/shared";
import { useTenantMembers } from "@/modules/workspace/hooks/useTenantMembers";

export const WorkspaceTeamDetail = function WorkspaceTeamDetailPage() {
  const params = useParams<{ id: string }>();
  const { tenantId } = useTenantId();
  const queryClient = useQueryClient();
  const directory = useTenantMembers();
  const names = Object.fromEntries((directory.data ?? []).map((person) => [person.id, person.label]));
  const [userId, setUserId] = useState("");
  const [role, setRole] = useState("member");
  const [editOpen, setEditOpen] = useState(false);
  const [archiveOpen, setArchiveOpen] = useState(false);
  const [name, setName] = useState("");
  const [description, setDescription] = useState("");
  const team = useQuery({
    queryKey: ["workspace", tenantId, "team", params.id],
    queryFn: () => workspaceApi.teams.get(tenantId!, params.id),
    enabled: !!tenantId && !!params.id,
  });
  const hubId = team.data?.work_hub_id ? String(team.data.work_hub_id) : "";
  const projects = useQuery({
    queryKey: ["workspace", tenantId, "projects", hubId, params.id],
    queryFn: () => workspaceApi.projects.list(tenantId!, { work_hub_id: hubId, team_id: params.id }),
    enabled: !!tenantId && !!hubId,
  });
  const tasks = useQuery({
    queryKey: ["workspace", tenantId, "tasks", hubId],
    queryFn: () => workspaceApi.tasks.list(tenantId!, { work_hub_id: hubId }),
    enabled: !!tenantId && !!hubId,
  });
  const content = useQuery({
    queryKey: ["workspace", tenantId, "content", hubId],
    queryFn: () => workspaceApi.content.list(tenantId!, { work_hub_id: hubId }),
    enabled: !!tenantId && !!hubId,
  });
  const activity = useQuery({
    queryKey: ["workspace", tenantId, "activity", hubId],
    queryFn: () => workspaceApi.activity.list(tenantId!, hubId),
    enabled: !!tenantId && !!hubId,
  });

  const invalidate = () => void queryClient.invalidateQueries({ queryKey: ["workspace", tenantId, "team", params.id] });
  const addMember = useMutation({
    mutationFn: () => workspaceApi.members.add(tenantId!, { team_id: params.id, user_id: userId, role }),
    onSuccess: () => {
      toast.success("عضو اضافه شد");
      setUserId("");
      invalidate();
    },
    onError: (err) => toast.error(err instanceof Error ? err.message : "افزودن عضو ناموفق بود"),
  });
  const updateMember = useMutation({
    mutationFn: ({ id, body }: { id: string; body: Record<string, unknown> }) =>
      workspaceApi.members.update(tenantId!, id, body),
    onSuccess: () => {
      toast.success("عضو به‌روز شد");
      invalidate();
    },
    onError: (err) => toast.error(err instanceof Error ? err.message : "به‌روزرسانی عضو ناموفق بود"),
  });
  const saveTeam = useMutation({
    mutationFn: () => workspaceApi.teams.update(tenantId!, params.id, { name, description }),
    onSuccess: () => {
      toast.success("تیم به‌روز شد");
      setEditOpen(false);
      invalidate();
    },
  });
  const archive = useMutation({
    mutationFn: () => workspaceApi.teams.update(tenantId!, params.id, { status: "archived" }),
    onSuccess: () => {
      toast.success("تیم بایگانی شد");
      setArchiveOpen(false);
      invalidate();
    },
  });

  if (!tenantId || team.isLoading) return <WorkspacePageLoader />;
  if (team.error) return <WorkspacePageError error={team.error} onRetry={() => team.refetch()} />;
  const members = (team.data?.members as Record<string, unknown>[]) || [];
  const teamTasks = (tasks.data ?? []).filter((task) => String(task.team_id || "") === params.id);
  const teamContent = (content.data ?? []).filter((item) => String(item.team_id || "") === params.id);

  return (
    <div className="space-y-6">
      <PageHeader
        title={String(team.data?.name || "تیم")}
        description={String(team.data?.description || "اعضای تیم، پروژه‌ها و فعالیت‌ها")}
        actions={
          <div className="flex gap-2">
            <Button
              variant="outline"
              onClick={() => {
                setName(String(team.data?.name || ""));
                setDescription(String(team.data?.description || ""));
                setEditOpen(true);
              }}
            >
              ویرایش
            </Button>
            <Button variant="outline" onClick={() => setArchiveOpen(true)}>
              بایگانی تیم
            </Button>
          </div>
        }
      />
      <Card>
        <CardContent className="space-y-4 p-5">
          <h2 className="font-semibold text-secondary">اعضای تیم</h2>
          <div className="grid gap-2 md:grid-cols-[1fr_160px_auto]">
            <IdentityUserSelect value={userId} onChange={setUserId} emptyLabel="انتخاب عضو سازمان" />
            <Select value={role} onChange={(event) => setRole(event.target.value)}>
              {Object.entries(TEAM_ROLE).map(([value, label]) => (
                <option key={value} value={value}>
                  {label}
                </option>
              ))}
            </Select>
            <Button disabled={!userId.trim() || addMember.isPending} onClick={() => addMember.mutate()}>
              افزودن عضو
            </Button>
          </div>
          <div className="space-y-2">
            {members.map((member) => (
              <div key={String(member.id)} className="flex flex-wrap items-center justify-between gap-2 rounded-xl border border-[var(--border)] px-3 py-2">
                <div>
                  <p className="text-sm font-medium">{names[String(member.user_id || "")] || displayPerson(String(member.user_id || ""))}</p>
                  <p className="text-xs text-[var(--muted)]">{labelOf(TEAM_ROLE, String(member.role || ""))}</p>
                </div>
                <div className="flex gap-2">
                  <Select
                    value={String(member.role || "member")}
                    onChange={(event) => updateMember.mutate({ id: String(member.id), body: { role: event.target.value } })}
                  >
                    {Object.entries(TEAM_ROLE).map(([value, label]) => (
                      <option key={value} value={value}>
                        {label}
                      </option>
                    ))}
                  </Select>
                  <Button variant="outline" size="sm" onClick={() => updateMember.mutate({ id: String(member.id), body: { status: "removed" } })}>
                    حذف
                  </Button>
                </div>
              </div>
            ))}
          </div>
        </CardContent>
      </Card>
      <div className="grid gap-4 lg:grid-cols-2">
        <Card>
          <CardContent className="space-y-2 p-5">
            <h2 className="font-semibold text-secondary">پروژه‌های تیم</h2>
            {(projects.data ?? []).length === 0 ? (
              <p className="text-sm text-[var(--muted)]">پروژه‌ای به این تیم وصل نیست.</p>
            ) : (
              (projects.data ?? []).map((project) => (
                <Link key={String(project.id)} href={`/workspace/projects/${project.id}`} className="flex justify-between text-sm">
                  <span>{String(project.name)}</span>
                  <StatusChip value={String(project.status || "")} kind="project" />
                </Link>
              ))
            )}
          </CardContent>
        </Card>
        <Card>
          <CardContent className="space-y-2 p-5">
            <h2 className="font-semibold text-secondary">وظایف و محتوا</h2>
            <p className="text-sm text-[var(--muted)]">{teamTasks.length} وظیفه · {teamContent.length} محتوا</p>
          </CardContent>
        </Card>
      </div>
      <Card>
        <CardContent className="space-y-2 p-5">
          <h2 className="font-semibold text-secondary">فعالیت تیم</h2>
          {(activity.data ?? []).slice(0, 12).map((item) => (
            <p key={String(item.id)} className="text-sm text-[var(--muted)]">
              {labelOf(ACTIVITY_ACTION, String(item.action || ""), "رویداد")} · {names[String(item.actor_user_id || "")] || displayPerson(String(item.actor_user_id || ""))} · {formatWhen(String(item.created_at || ""))}
            </p>
          ))}
        </CardContent>
      </Card>
      {hubId ? (
        <CommentThread tenantId={tenantId} workHubId={hubId} subjectType="team" subjectId={params.id} />
      ) : null}
      <Dialog open={editOpen} onClose={() => setEditOpen(false)} title="ویرایش تیم">
        <div className="space-y-3">
          <Input value={name} onChange={(event) => setName(event.target.value)} placeholder="نام تیم" />
          <Textarea value={description} onChange={(event) => setDescription(event.target.value)} placeholder="توضیح" />
          <Button className="w-full" disabled={!name.trim() || saveTeam.isPending} onClick={() => saveTeam.mutate()}>
            ذخیره
          </Button>
        </div>
      </Dialog>
      <ConfirmDialog
        open={archiveOpen}
        onClose={() => setArchiveOpen(false)}
        onConfirm={() => archive.mutate()}
        title="بایگانی تیم"
        confirmLabel="بایگانی"
        danger
        loading={archive.isPending}
      />
    </div>
  );
};

export default WorkspaceTeamDetail;