import path from 'path';
import os from 'os';
import fs from 'fs';
import { execSync } from 'child_process';
import { PIPELINE_SCRIPT, PROJECT_ROOT } from './shared';
import type { ToolDefinition } from './types';

export const createManifest: ToolDefinition = {
  name: 'create_manifest',
  description: '初始化新的 manifest.json，调用 pipeline.js init 创建输出目录和项目骨架。这是视频创作 pipeline 的起点。',
  input_schema: {
    type: 'object',
    properties: {
      accountId: { type: 'string', description: '账号ID，决定模型、参考图等配置来源' },
      mode: { type: 'string', description: '创作模式: single (单图模式) 或 framePair (首尾帧模式)' },
      items: { type: 'string', description: '分镜数据 JSON 数组字符串。每个元素需包含 shotDesc (分镜描述) 和 script (旁白文案)，可选 imagePrompt、videoPrompt、directorRef、keyword、duration' },
      imageModel: { type: 'string', description: '生图模型（可选，默认继承账号配置）: gemini, mj, gpt-image, kling' },
      videoModel: { type: 'string', description: '视频模型（可选，默认继承账号配置）: veo3-fast, veo3-fast-frames, kling, grok' },
      format: { type: 'string', description: '画幅（可选，默认继承账号配置）: 9:16, 16:9, 1:1' },
    },
    required: ['accountId', 'mode', 'items'],
  },
  execute: async (params) => {
    const { accountId, mode, items, imageModel, videoModel, format } = params as Record<string, string>;
    // Validate items JSON
    let parsed: unknown;
    try { parsed = JSON.parse(items); } catch { return '错误: items 不是合法的 JSON 字符串'; }
    if (!Array.isArray(parsed) || (parsed as unknown[]).length === 0) return '错误: items 必须是非空 JSON 数组';
    // Write items to temp file to avoid shell escaping issues
    const tmpFile = path.join(os.tmpdir(), `pipeline-items-${Date.now()}.json`);
    fs.writeFileSync(tmpFile, items, 'utf-8');
    try {
      const args = [
        `"${PIPELINE_SCRIPT}"`, 'init',
        `--account "${accountId}"`,
        `--mode ${mode}`,
        `--items-file "${tmpFile}"`,
        imageModel ? `--image-model ${imageModel}` : '',
        videoModel ? `--video-model ${videoModel}` : '',
        format ? `--format ${format}` : '',
      ].filter(Boolean).join(' ');
      const output = execSync(`node ${args}`, { cwd: PROJECT_ROOT, encoding: 'utf-8' });
      const match = output.match(/Manifest 已创建: (.+)/);
      const manifestPath = match ? match[1].trim() : '(unable to parse path)';
      return `Manifest 已创建: ${manifestPath}\n\n${output}`;
    } finally {
      try { fs.unlinkSync(tmpFile); } catch { /* ignore */ }
    }
  },
};