import { NextRequest, NextResponse } from "next/server";
import { db } from "@/lib/db";
import { resolveProjectTemplates } from "@/lib/render-pipeline/project-templates";

// ── Auth ─────────────────────────────────────────────────────────────────────

function isAuthorized(req: NextRequest): boolean {
  const apiKey = process.env.API_SECRET_KEY;
  if (!apiKey) return false;
  const authHeader = req.headers.get("authorization") ?? "";
  if (authHeader.startsWith("Bearer ")) return authHeader.slice(7) === apiKey;
  return (req.headers.get("x-api-key") ?? "") === apiKey;
}

// ── GET /api/ext/projects ─────────────────────────────────────────────────────
//
// Returns all projects with their showIds. Useful for pipeline tools that need
// to enumerate available projects and resolve a showId → projectCode mapping.
//
// Query params (all optional):
//   status   Filter by project status: ACTIVE (default) | ARCHIVED | ALL
//
// Example:
//   GET /api/ext/projects
//   GET /api/ext/projects?status=ALL

export async function GET(req: NextRequest) {
  if (!isAuthorized(req)) {
    return NextResponse.json({ error: "Unauthorized" }, { status: 401 });
  }

  const { searchParams } = new URL(req.url);
  const statusParam = searchParams.get("status")?.toUpperCase() ?? "ACTIVE";

  const whereStatus =
    statusParam === "ALL"
      ? undefined
      : statusParam === "ARCHIVED"
      ? { status: "ARCHIVED" as const }
      : { status: "ACTIVE" as const };

  const projects = await db.project.findMany({
    where: whereStatus,
    orderBy: [{ showId: "asc" }, { code: "asc" }],
    select: {
      id:          true,
      name:        true,
      code:        true,
      showId:      true,
      projectType: true,
      status:      true,
      startDate:   true,
      dueDate:     true,
      pipelineConfig: true,
      _count: {
        select: { shots: true },
      },
    },
  });

  // Templates are resolved here rather than in the panel so that the panel and
  // the headless preview build cannot disagree about which template, or which
  // show LUT, a shot was built with.
  const withTemplates = await Promise.all(
    projects.map(async ({ pipelineConfig, ...project }) => ({
      ...project,
      templates: await resolveProjectTemplates({ ...project, pipelineConfig }),
    }))
  );

  return NextResponse.json({ projects: withTemplates, total: withTemplates.length });
}