import { query, queryOne, run } from "@/lib/db";
import { getToken } from "next-auth/jwt";

export const dynamic = "force-dynamic";

export async function GET(request) {
  try {
    const token = await getToken({
      req: request,
      secret:
        process.env.NEXTAUTH_SECRET ||
        "your-fallback-secret-should-be-at-least-32-chars",
    });

    if (!token) {
      console.log("API: Unauthorized request to /api/clues - no token");
      return Response.json({ error: "Unauthorized" }, { status: 401 });
    }

    if (!token.teamId) {
      console.log("API: User without team tried to access clues");
      return Response.json(
        { error: "You must be part of a team to view clues" },
        { status: 403 }
      );
    }

    try {
      await run(`
        CREATE TABLE IF NOT EXISTS team_clues (
          team_id INTEGER NOT NULL,
          clue_id INTEGER NOT NULL,
          found_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
          PRIMARY KEY (team_id, clue_id),
          FOREIGN KEY (team_id) REFERENCES teams(id),
          FOREIGN KEY (clue_id) REFERENCES clues(id)
        )
      `);

      const tableInfo = await query("PRAGMA table_info(team_clues)");
      const hasSkippedColumn = tableInfo.some((col) => col.name === "skipped");

      if (!hasSkippedColumn) {
        console.log("Adding 'skipped' column to team_clues table");
        await run(
          "ALTER TABLE team_clues ADD COLUMN skipped BOOLEAN DEFAULT 0"
        );
      }
    } catch (schemaError) {
      console.error("Error ensuring database schema:", schemaError);
    }

    const clues = await query(`
      SELECT id, title, description, location
      FROM clues 
      ORDER BY id ASC
    `);

    const cluesWithStatus = await Promise.all(
      clues.map(async (clue) => {
        let clueStatus;
        try {
          clueStatus = await queryOne(
            "SELECT found_at, skipped FROM team_clues WHERE team_id = ? AND clue_id = ?",
            [token.teamId, clue.id]
          );
        } catch (error) {
          console.error(`Error querying status for clue ${clue.id}:`, error);
          clueStatus = await queryOne(
            "SELECT found_at FROM team_clues WHERE team_id = ? AND clue_id = ?",
            [token.teamId, clue.id]
          );
        }

        return {
          ...clue,
          found: !!clueStatus && !(clueStatus.skipped === 1),
          skipped: !!clueStatus && clueStatus.skipped === 1,
          available: false,
        };
      })
    );

    let firstUnavailableFound = false;
    const finalClues = cluesWithStatus.map((clue, index, arr) => {
      if (clue.found || clue.skipped) {
        return { ...clue, available: true };
      }

      if (!firstUnavailableFound) {
        firstUnavailableFound = true;
        return { ...clue, available: true };
      }

      return { ...clue, available: false };
    });

    console.log(`API: Returning ${finalClues.length} clues`);

    return Response.json(finalClues, {
      headers: {
        "Cache-Control": "no-store, no-cache, must-revalidate",
        Pragma: "no-cache",
        Expires: "0",
      },
    });
  } catch (error) {
    console.error("Error fetching clues:", error);
    return Response.json(
      { error: "Failed to fetch clues: " + error.message },
      { status: 500 }
    );
  }
}