// Copyright (c) 未来飞马
//
// This Source Code Form is subject to the terms of the Mozilla Public
// License, v. 2.0. If a copy of the MPL was not distributed with this
// file, You can obtain one at https://mozilla.org/MPL/2.0/.
//
// Trademark Notice:
// The MPL-2.0 license grants copyright permissions for source code only.
// It does NOT grant any rights to use trademarks including "未来飞马",
// "Harness Loop", "RSI", and associated slogan "让AI进化提前发生，让AI落地快人一步".
// Any use of these trademarks requires separate written permission.
/**
 * 测试夹具生成器：现场合成 .docx / .pptx / .png，落盘到指定目录。
 *
 * 刻意不在仓库里存任何二进制素材（.gitignore 也排除了图片）——夹具全部即时生成，
 * 内容为合成的假数据，不含任何真实 PII。
 */

import fs from 'node:fs';
import path from 'node:path';
import { spawnSync } from 'node:child_process';
import { ensureDir, resolvePython } from '../lib.mjs';
import { makeTinyPng } from '../case-intake.mjs';

const PY_BUILD = `
import sys, zipfile, os
target = sys.argv[1]

doc_xml = '''<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<w:document xmlns:w="http://schemas.openxmlformats.org/wordprocessingml/2006/main"
            xmlns:r="http://schemas.openxmlformats.org/officeDocument/2006/relationships"
            xmlns:wp="http://schemas.openxmlformats.org/drawingml/2006/wordprocessingDrawing"
            xmlns:a="http://schemas.openxmlformats.org/drawingml/2006/main"><w:body>
<w:p><w:pPr><w:pStyle w:val="Heading1"/></w:pPr><w:r><w:t>IC 计算机科学 考前冲刺案例</w:t></w:r></w:p>
<w:p><w:r><w:t>客户在读帝国理工本科二年级，期末前两周找到我们，担心挂科。</w:t></w:r></w:p>
<w:p><w:r><w:t>跟进状态：异议处理中。客户觉得贵，家长不放心老师。</w:t></w:r></w:p>
<w:p><w:r><w:t>结果：期末提分 18 分，家长很满意，已续课。</w:t></w:r></w:p>
<w:p><w:r><w:drawing><wp:inline><a:graphic><a:blip r:embed="rId5"/></a:graphic></wp:inline></w:drawing></w:r></w:p>
<w:p><w:hyperlink r:id="rId9"><w:r><w:t>查看成绩单</w:t></w:r></w:hyperlink></w:p>
</w:body></w:document>'''

doc_rels = '''<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<Relationships xmlns="http://schemas.openxmlformats.org/package/2006/relationships">
<Relationship Id="rId5" Type="http://schemas.openxmlformats.org/officeDocument/2006/relationships/image" Target="media/image1.png"/>
<Relationship Id="rId9" Type="http://schemas.openxmlformats.org/officeDocument/2006/relationships/hyperlink" Target="https://example.invalid/score" TargetMode="External"/>
</Relationships>'''

pres_xml = '''<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<p:presentation xmlns:p="http://schemas.openxmlformats.org/presentationml/2006/main"
                xmlns:r="http://schemas.openxmlformats.org/officeDocument/2006/relationships">
<p:sldIdLst><p:sldId id="256" r:id="rId1"/><p:sldId id="257" r:id="rId2"/></p:sldIdLst></p:presentation>'''

pres_rels = '''<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<Relationships xmlns="http://schemas.openxmlformats.org/package/2006/relationships">
<Relationship Id="rId1" Type="http://schemas.openxmlformats.org/officeDocument/2006/relationships/slide" Target="slides/slide1.xml"/>
<Relationship Id="rId2" Type="http://schemas.openxmlformats.org/officeDocument/2006/relationships/slide" Target="slides/slide2.xml"/>
</Relationships>'''

def slide(title, body, with_pic, rid):
    pic = ('<p:pic><p:blipFill><a:blip r:embed="%s"/></p:blipFill></p:pic>' % rid) if with_pic else ''
    return '''<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<p:sld xmlns:p="http://schemas.openxmlformats.org/presentationml/2006/main"
       xmlns:a="http://schemas.openxmlformats.org/drawingml/2006/main"
       xmlns:r="http://schemas.openxmlformats.org/officeDocument/2006/relationships"><p:cSld><p:spTree>
<p:sp><p:nvSpPr><p:nvPr><p:ph type="title"/></p:nvPr></p:nvSpPr><p:txBody><a:p><a:r><a:t>%s</a:t></a:r></a:p></p:txBody></p:sp>
<p:sp><p:nvSpPr/><p:txBody><a:p><a:r><a:t>%s</a:t></a:r></a:p></p:txBody></p:sp>
%s
</p:spTree></p:cSld></p:sld>''' % (title, body, pic)

slide_rels = '''<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<Relationships xmlns="http://schemas.openxmlformats.org/package/2006/relationships">
<Relationship Id="rId2" Type="http://schemas.openxmlformats.org/officeDocument/2006/relationships/image" Target="../media/image1.png"/>
</Relationships>'''

png = bytes.fromhex(
    "89504e470d0a1a0a0000000d49484452000000010000000108060000001f15c489"
    "0000000a49444154789c6300010000050001"
    "0d0a2db40000000049454e44ae426082")

with zipfile.ZipFile(os.path.join(target, 'case.docx'), 'w') as zf:
    zf.writestr('[Content_Types].xml', '<Types/>')
    zf.writestr('word/document.xml', doc_xml)
    zf.writestr('word/_rels/document.xml.rels', doc_rels)
    zf.writestr('word/media/image1.png', png)

with zipfile.ZipFile(os.path.join(target, 'deck.pptx'), 'w') as zf:
    zf.writestr('[Content_Types].xml', '<Types/>')
    zf.writestr('ppt/presentation.xml', pres_xml)
    zf.writestr('ppt/_rels/presentation.xml.rels', pres_rels)
    zf.writestr('ppt/slides/slide1.xml', slide('案例合集', '英国本科 方案推荐中 导师匹配', True, 'rId2'))
    zf.writestr('ppt/slides/slide2.xml', slide('结果与反馈', '期末提分 出分反馈 家长认可', False, 'rId2'))
    zf.writestr('ppt/slides/_rels/slide1.xml.rels', slide_rels)
    zf.writestr('ppt/media/image1.png', png)

print('ok')
`;

/**
 * 生成夹具。
 * @param {string} dir 目标目录
 * @returns {{docx:string, pptx:string, images:string[]}}
 */
export function makeFixtures(dir) {
  const target = ensureDir(dir);
  const python = resolvePython();
  const run = spawnSync(python, ['-c', PY_BUILD, target], { encoding: 'utf8' });
  if (run.status !== 0) {
    throw new Error(`夹具生成失败：${run.stderr || run.stdout}`);
  }

  const images = [];
  // 九宫格：9 张同尺寸、同一批连发（时间戳相邻）→ 应判为同一组 3x3
  const base = 1_700_000_000_000;
  for (let i = 0; i < 9; i++) {
    const file = path.join(target, `grid-${String(i + 1).padStart(2, '0')}.png`);
    fs.writeFileSync(file, makeTinyPng(400, 400));
    fs.utimesSync(file, new Date(base + i * 1000), new Date(base + i * 1000));
    images.push(file);
  }
  // 另一批：不同尺寸 + 不同时间 → 不应并进九宫格
  const other = path.join(target, 'other-01.png');
  fs.writeFileSync(other, makeTinyPng(1600, 900));
  fs.utimesSync(other, new Date(base - 3 * 86_400_000), new Date(base - 3 * 86_400_000));
  images.push(other);

  return { docx: path.join(target, 'case.docx'), pptx: path.join(target, 'deck.pptx'), images };
}