import { NextRequest, NextResponse } from "next/server";
import { db } from "@/lib/db";

// ── 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/shots/lookup ─────────────────────────────────────────────────
//
// Look up a single shot by its shot code and (optionally) project code.
// Designed for use in Nuke/After Effects/Blender pipeline tools.
//
// Query params:
//   shotCode    (required) e.g. UNG_108_004_010
//   projectCode (recommended) e.g. UNG_108  – disambiguates if same code appears across projects
//
// Example:
//   GET /api/ext/shots/lookup?shotCode=UNG_108_004_010&projectCode=UNG_108
//   Authorization: Bearer <API_SECRET_KEY>

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

  const { searchParams } = new URL(req.url);
  const shotCode    = searchParams.get("shotCode")?.trim();
  const projectCode = searchParams.get("projectCode")?.trim();

  if (!shotCode) {
    return NextResponse.json({ error: "shotCode query param is required" }, { status: 400 });
  }

  const shot = await db.shot.findFirst({
    where: {
      shotCode,
      ...(projectCode ? { project: { code: projectCode } } : {}),
    },
    select: {
      id:            true,
      shotCode:      true,
      scene:         true,
      episode:       true,
      sequence:      true,
      shotNumber:    true,
      description:   true,
      notes:         true,
      status:        true,
      priority:      true,
      frameStart:    true,
      frameEnd:      true,
      fps:           true,
      dueDate:       true,
      // EDL / pull CSV fields
      sourceClip:    true,
      timecodeStart: true,
      timecodeEnd:   true,
      clipDuration:  true,
      exrOutput:          true,
      seqTimecodeStart: true,
      seqTimecodeEnd:   true,
      shotVersion:   true,
      thumbnailUrl:  true,
      createdAt:     true,
      updatedAt:     true,
      project: {
        select: { id: true, name: true, code: true, showId: true },
      },
      artist: {
        select: { id: true, name: true, email: true },
      },
      tasks: {
        orderBy: { sortOrder: "asc" },
        select: {
          id:     true,
          title:  true,
          type:   true,
          status: true,
        },
      },
      versions: {
        where:   { isLatest: true },
        take:    1,
        select: {
          id:             true,
          versionNumber:  true,
          approvalStatus: true,
          reviewStatus:   true,
          fileUrl:        true,
          createdAt:      true,
        },
      },
    },
  });

  if (!shot) {
    return NextResponse.json({ error: "Shot not found" }, { status: 404 });
  }

  return NextResponse.json({ shot });
}