import { useCallback, useEffect } from "react";
import { useNavigate } from "react-router-dom";
import { issuesApi } from "../api/issues";
import { useCompany } from "../context/CompanyContext";
import { useBreadcrumbs } from "../context/BreadcrumbContext";
import { useApi } from "../hooks/useApi";
import { StatusIcon } from "../components/StatusIcon";
import { PriorityIcon } from "../components/PriorityIcon";
import { EntityRow } from "../components/EntityRow";
import { EmptyState } from "../components/EmptyState";
import { formatDate } from "../lib/utils";
import { ListTodo } from "lucide-react";

export function MyIssues() {
  const { selectedCompanyId } = useCompany();
  const { setBreadcrumbs } = useBreadcrumbs();
  const navigate = useNavigate();

  useEffect(() => {
    setBreadcrumbs([{ label: "My Issues" }]);
  }, [setBreadcrumbs]);

  const fetcher = useCallback(() => {
    if (!selectedCompanyId) return Promise.resolve([]);
    return issuesApi.list(selectedCompanyId);
  }, [selectedCompanyId]);

  const { data: issues, loading, error } = useApi(fetcher);

  if (!selectedCompanyId) {
    return <EmptyState icon={ListTodo} message="Select a company to view your issues." />;
  }

  // Show issues that are not assigned (user-created or unassigned)
  const myIssues = (issues ?? []).filter(
    (i) => !i.assigneeAgentId && !["done", "cancelled"].includes(i.status)
  );

  return (
    <div className="space-y-4">
      <h2 className="text-lg font-semibold">My Issues</h2>

      {loading && <p className="text-sm text-muted-foreground">Loading...</p>}
      {error && <p className="text-sm text-destructive">{error.message}</p>}

      {!loading && myIssues.length === 0 && (
        <EmptyState icon={ListTodo} message="No issues assigned to you." />
      )}

      {myIssues.length > 0 && (
        <div className="border border-border rounded-md">
          {myIssues.map((issue) => (
            <EntityRow
              key={issue.id}
              identifier={issue.id.slice(0, 8)}
              title={issue.title}
              onClick={() => navigate(`/issues/${issue.id}`)}
              leading={
                <>
                  <PriorityIcon priority={issue.priority} />
                  <StatusIcon status={issue.status} />
                </>
              }
              trailing={
                <span className="text-xs text-muted-foreground">
                  {formatDate(issue.createdAt)}
                </span>
              }
            />
          ))}
        </div>
      )}
    </div>
  );
}