import { useEffect, useState } from "react";
import { useParams, Link, useNavigate } from "react-router-dom";
import { getProject, deleteProject, listTrackers, listProcessedTickets } from "../../lib/api";
import type { Project, WatchedTracker, ProcessedTicket } from "../../lib/types";
import TrackerList from "../trackers/TrackerList";

export default function ProjectDashboard() {
  const { projectId } = useParams();
  const navigate = useNavigate();
  const [project, setProject] = useState<Project | null>(null);
  const [trackers, setTrackers] = useState<WatchedTracker[]>([]);
  const [tickets, setTickets] = useState<ProcessedTicket[]>([]);

  async function loadData() {
    if (!projectId) return;
    const [proj, trks, tkts] = await Promise.all([
      getProject(projectId),
      listTrackers(projectId),
      listProcessedTickets(projectId),
    ]);
    setProject(proj);
    setTrackers(trks);
    setTickets(tkts);
  }

  useEffect(() => {
    loadData();
  }, [projectId]);

  async function handleDelete() {
    if (!projectId) return;
    if (!window.confirm(`Delete project "${project?.name}"?`)) return;

    await deleteProject(projectId);
    window.dispatchEvent(new Event("orchai:refresh-projects"));
    navigate("/");
  }

  function statusBadgeClass(status: string): string {
    switch (status) {
      case "Pending":
        return "bg-yellow-100 text-yellow-700";
      case "Done":
        return "bg-green-100 text-green-700";
      case "Error":
        return "bg-red-100 text-red-700";
      default:
        return "bg-blue-100 text-blue-700";
    }
  }

  if (!project) {
    return <div className="p-8 text-gray-400">Loading...</div>;
  }

  const recentTickets = tickets.slice(-10).reverse();

  return (
    <div className="p-8">
      <div className="flex items-center justify-between mb-6">
        <h2 className="text-xl font-bold">{project.name}</h2>
        <div className="flex gap-2">
          <Link
            to={`/projects/${project.id}/edit`}
            className="px-3 py-1 bg-gray-200 rounded text-sm hover:bg-gray-300"
          >
            Edit
          </Link>
          <button
            onClick={handleDelete}
            className="px-3 py-1 bg-red-100 text-red-700 rounded text-sm hover:bg-red-200"
          >
            Delete
          </button>
        </div>
      </div>

      <div className="bg-white rounded-lg border border-gray-200 p-4 space-y-3">
        <div>
          <span className="text-sm text-gray-500">Path:</span>
          <span className="ml-2 text-sm font-mono">{project.path}</span>
        </div>
        {project.cloned_from && (
          <div>
            <span className="text-sm text-gray-500">Cloned from:</span>
            <span className="ml-2 text-sm font-mono">{project.cloned_from}</span>
          </div>
        )}
        <div>
          <span className="text-sm text-gray-500">Base branch:</span>
          <span className="ml-2 text-sm font-mono">{project.base_branch}</span>
        </div>
        <div>
          <span className="text-sm text-gray-500">Created:</span>
          <span className="ml-2 text-sm">{new Date(project.created_at).toLocaleDateString()}</span>
        </div>
      </div>

      <div className="mt-8">
        <h3 className="text-lg font-semibold mb-4">Watched Trackers</h3>
        <TrackerList trackers={trackers} projectId={project.id} onRefresh={loadData} />
      </div>

      <div className="mt-8">
        <h3 className="text-lg font-semibold mb-4">Recent Tickets</h3>
        {recentTickets.length === 0 ? (
          <div className="text-sm text-gray-400">No tickets processed yet.</div>
        ) : (
          <div className="space-y-3">
            {recentTickets.map((ticket) => (
              <div
                key={ticket.id}
                className="bg-white rounded-lg border border-gray-200 p-4 flex items-center justify-between gap-4"
              >
                <div className="flex-1 min-w-0">
                  <div className="flex items-center gap-2">
                    <span className="text-xs text-gray-400 font-mono">#{ticket.artifact_id}</span>
                    <span className="text-sm font-medium truncate">{ticket.artifact_title}</span>
                  </div>
                </div>
                <span
                  className={`text-xs px-2 py-0.5 rounded-full font-medium shrink-0 ${statusBadgeClass(ticket.status)}`}
                >
                  {ticket.status}
                </span>
              </div>
            ))}
          </div>
        )}
      </div>
    </div>
  );
}