// server/api/admin/village/complete-clearing.post.ts
import { getUserIdFromSession } from '../../../utils/auth';
import { PrismaClient } from '@prisma/client';
import { REWARDS } from '../../../services/villageService';

const prisma = new PrismaClient();

export default defineEventHandler(async (event) => {
  const userId = await getUserIdFromSession(event);

  // Simple admin check
  if (userId !== 1) {
    throw createError({ statusCode: 403, statusMessage: 'Forbidden' });
  }

  const village = await prisma.village.findUniqueOrThrow({ where: { userId } });

  const tilesToComplete = await prisma.villageTile.findMany({
    where: {
      villageId: village.id,
      terrainState: 'CLEARING',
    },
  });

  if (tilesToComplete.length === 0) {
    return { success: true, message: 'No clearing tasks to complete.' };
  }

  const totalCoins = tilesToComplete.length * REWARDS.CLEARING.coins;
  const totalExp = tilesToComplete.length * REWARDS.CLEARING.exp;

  await prisma.$transaction(async (tx) => {
    // 1. Update user totals
    await tx.user.update({
      where: { id: userId },
      data: {
        coins: { increment: totalCoins },
        exp: { increment: totalExp },
      },
    });

    // 2. Update all the tiles
    await tx.villageTile.updateMany({
        where: { id: { in: tilesToComplete.map(t => t.id) } },
        data: { terrainState: 'IDLE', terrainType: 'EMPTY', clearingStartedAt: null },
    });

    // 3. Create an event for each completed tile
    for (const tile of tilesToComplete) {
      await tx.villageEvent.create({
        data: {
          villageId: village.id,
          type: tile.terrainType === 'BLOCKED_TREE' ? 'CLEAR_TREE' : 'CLEAR_STONE',
          message: `Finished clearing ${tile.terrainType === 'BLOCKED_TREE' ? 'a tree' : 'a stone'} at (${tile.x}, ${tile.y})`,
          tileX: tile.x,
          tileY: tile.y,
          coins: REWARDS.CLEARING.coins,
          exp: REWARDS.CLEARING.exp,
        }
      });
    }
  });

  return { success: true, message: `Completed ${tilesToComplete.length} clearing tasks.` };
});