# -*- coding: utf-8 -*-
"""中转管理端加"批量删除"（重写版）。

上一版的坑：
    1. JS 里的换行我写成 \\n，但 relay.py 里是 f-string，
       \\n 会被还原成真换行 -> JS 字符串跨行 -> 语法错误。
       正确写法是补丁里用 \\\\n，这样 relay.py 源码里是 \\n，
       f-string 渲染后 JS 拿到的是 反斜杠+n 两个字符。
    2. rows.append 的锚点带太多上下文，容易被空格差异搞挂。
       换成最小锚点。
"""
from __future__ import annotations

import ast
import sys
from pathlib import Path

RELAY = Path(r"C:\Users\shu\Desktop\deepseekagent\LanRemote\relay" r"\relay.py")

# ---------------------------------------------------------------- 后端

BACKEND_ANCHOR = '''            if path in ("/v1/admin/delete", "/v1/admin/delete_all"):'''

BACKEND_NEW = '''            if path == "/v1/admin/delete_many":
                # 批量删除：勾几台删几台。
                # 和"删除全部"的区别：不动没勾的，也不清孤儿绑定。
                body = self._json_body()
                wanted = body.get("deviceIds") or []
                if not isinstance(wanted, list):
                    self._json(400, {"ok": False, "error": "deviceIds 要是数组"})
                    return
                wanted = [str(item).strip() for item in wanted
                          if str(item).strip()]
                if not wanted:
                    self._json(400, {"ok": False, "error": "没有勾选任何设备"})
                    return
                results = [RELAY.delete_device(device_id=item)
                           for item in wanted]
                done = [r for r in results if r.get("ok")]
                failed = [r for r in results if not r.get("ok")]
                log(f"管理操作：批量删除 {len(done)}/{len(wanted)} 台设备")
                self._json(200, {
                    "ok": True,
                    "requested": len(wanted),
                    "deleted": len(done),
                    "failed": len(failed),
                    "devices": done,
                    "errors": failed[:10],
                })
                return

''' + BACKEND_ANCHOR

# ---------------------------------------------------------------- 行里加复选框（最小锚点）

ROW_ANCHOR = '''            rows.append(
                "<tr>"
'''

ROW_NEW = '''            rows.append(
                "<tr>"
                # 批量删除用的复选框。value 放 deviceId。
                "<td class=pickcell>"
                f'<input type=checkbox class=pick value="{_esc(device["deviceId"])}">'
                "</td>"
'''

# ---------------------------------------------------------------- 表头全选

HEADER_ANCHOR = "<table><tr><th>设备</th>"
HEADER_NEW = ("<table><tr><th class=pickcell>"
              '<input type=checkbox id=pickAll title="全选"></th>'
              "<th>设备</th>")

# ---------------------------------------------------------------- 顶部按钮

BAR_ANCHOR = "  <button class=del id=delAll>删除全部设备</button>"
BAR_NEW = ("  <button class=del id=delPicked>删除选中</button>\n"
           "  <button class=del id=delAll>删除全部设备</button>")

# ---------------------------------------------------------------- 样式

CSS_ANCHOR = (" button.del:hover{{background:#5a1c22;border-color:#a33;"
              "color:#ffa198}}")

CSS_NEW = CSS_ANCHOR + """
 button.del:disabled{{opacity:.45;cursor:not-allowed}}
 .pickcell{{width:34px;text-align:center;padding-left:10px;padding-right:0}}
 input[type=checkbox]{{width:15px;height:15px;cursor:pointer;accent-color:#2f81f7}}
 tr.picked td{{background:#1f2733}}"""

# ---------------------------------------------------------------- 前端 JS
# 注意：这里写 \\\\n，落到 relay.py 里是 \\n，
# 再经 f-string 渲染，JS 拿到的才是 反斜杠+n。

JS_ANCHOR = '''document.querySelectorAll('button.del[data-device]').forEach(b => {{
  b.onclick = () => del(b.dataset.device, b.dataset.name, b.dataset.code);
}});'''

JS_NEW = JS_ANCHOR + """

// ---------------- 批量删除 ----------------
const picks = () => Array.from(document.querySelectorAll('input.pick'));
const picked = () => picks().filter(c => c.checked).map(c => c.value);

function refreshPickState() {{
  const chosen = picked().length;
  const btn = document.getElementById('delPicked');
  if (btn) {{
    btn.disabled = chosen === 0;
    btn.textContent = chosen ? ('删除选中 (' + chosen + ')') : '删除选中';
  }}
  picks().forEach(c => {{
    const tr = c.closest('tr');
    if (tr) tr.classList.toggle('picked', c.checked);
  }});
  const all = document.getElementById('pickAll');
  if (all) {{
    const total = picks().length;
    all.checked = total > 0 && chosen === total;
    all.indeterminate = chosen > 0 && chosen < total;
  }}
}}

picks().forEach(c => c.addEventListener('change', refreshPickState));
const pickAll = document.getElementById('pickAll');
if (pickAll) pickAll.addEventListener('change', () => {{
  picks().forEach(c => {{ c.checked = pickAll.checked; }});
  refreshPickState();
}});
refreshPickState();

const delPicked = document.getElementById('delPicked');
if (delPicked) delPicked.onclick = async () => {{
  const ids = picked();
  if (!ids.length) return;
  if (!confirm('删除选中的 ' + ids.length + ' 台设备？\\\\n\\\\n'
               + '会断开它们现在的手表连接，并清掉它们占的配对码。'))
    return;
  delPicked.disabled = true;
  try {{
    const r = await fetch('/v1/admin/delete_many', {{
      method: 'POST',
      headers: {{'Content-Type': 'application/json'}},
      body: JSON.stringify({{deviceIds: ids}})
    }});
    const j = await r.json();
    if (j.ok) {{
      alert('已删除 ' + j.deleted + ' 台设备'
            + (j.failed ? ('，' + j.failed + ' 台失败') : ''));
      location.reload();
    }} else {{
      alert('删除失败：' + (j.error || '未知错误'));
      delPicked.disabled = false;
    }}
  }} catch (e) {{
    alert('请求出错：' + e);
    delPicked.disabled = false;
  }}
}};"""

PAIRS = [
    (BACKEND_ANCHOR, BACKEND_NEW),
    (ROW_ANCHOR, ROW_NEW),
    (HEADER_ANCHOR, HEADER_NEW),
    (BAR_ANCHOR, BAR_NEW),
    (CSS_ANCHOR, CSS_NEW),
    (JS_ANCHOR, JS_NEW),
]


def main() -> int:
    text = RELAY.read_text(encoding="utf-8")
    if "delete_many" in text:
        print("  已经加过了")
        return 0

    ok = True
    for old, new in PAIRS:
        if old not in text:
            print(f"  [失败] 锚点没找到 -> {old.strip()[:70]!r}")
            ok = False
            continue
        if text.count(old) != 1:
            print(f"  [警告] 锚点出现 {text.count(old)} 次，只替换第一处")
        text = text.replace(old, new, 1)

    RELAY.write_text(text, encoding="utf-8", newline="\n")
    if ok:
        print("  已加：/v1/admin/delete_many + 复选框 + 全选 + 删除选中")

    try:
        ast.parse(RELAY.read_text(encoding="utf-8"))
        print("  relay.py 语法 OK")
    except SyntaxError as exc:
        print(f"  relay.py 语法错误: 行 {exc.lineno}: {exc.msg}")
        ok = False
    return 0 if ok else 1


if __name__ == "__main__":
    sys.exit(main())