# workspace_view.dspy - 查看文件：txt/md/json 用 MdWidget 渲染，其他文档下载查看

import os
import json as _json
from urllib.parse import quote, unquote

def _decode_id(s):
    # 前端 id 可能被多层编码（Tree 懒加载一次 + encodeURIComponent 一次），
    # 循环解码到无 % 为止，兼容任意编码层数（2026-09-03 中文文件名"文件不存在"根因）
    for _ in range(4):
        if '%' not in s:
            break
        s2 = unquote(s)
        if s2 == s:
            break
        s = s2
    return s

file_id = _decode_id((params_kw or {}).get('id', '').strip())

uid = await get_user()
if not uid:
    uid = 'user-01'

session_id = (params_kw or {}).get('session_id', '') or ''
pipeline_id = (params_kw or {}).get('pipeline_id', '') or ''

dbname = get_module_dbname('pipeline-sdlc')

async with DBPools().sqlorContext(dbname) as sor:
    # 产线隔离：跨产线项目视为无项目（与弹窗入口一致，防绕过）
    project_dir, _ = await get_project_dir_pl(sor, uid, session_id, pipeline_id)
    space_dir, _ = await get_space_dir(sor, uid, session_id)
    # 通用会话（pipeline_id=_generic）：锁用户专属目录 _general/{uid}，
    # 不进入任何项目的工作空间（2026-09-08 用户要求）
    if pipeline_id == '_generic':
        _gd = generic_workspace_dir(uid)
        os.makedirs(_gd, exist_ok=True)
        project_dir = _gd
        space_dir = _gd

if not file_id or file_id == '__root__':
    return {"widgettype": "Message", "options": {"title": "查看失败", "message": "未指定文件"}}

full_path = resolve_workspace_path(project_dir, space_dir, file_id)

# 路径穿越校验
real_ws = os.path.realpath(space_dir)
real_full = os.path.realpath(full_path)
if not real_full.startswith(real_ws + os.sep):
    return {"widgettype": "Message", "options": {"title": "错误", "message": "非法路径"}}

if not os.path.isfile(full_path):
    return {"widgettype": "Message", "options": {"title": "查看失败", "message": "文件不存在: " + file_id}}

name = os.path.basename(full_path)
ext = os.path.splitext(name)[1].lower()

file_url = entire_url("/pipeline-sdlc/api/workspace_file.dspy") + "?id=" + quote(file_id) + (("&session_id=" + session_id) if session_id else "")

# txt/md/json → VScrollPanel 包裹 MdWidget 渲染（可滚动，长文档不截断；json 直接显示正文不下载）
md_exts = ['.md', '.txt', '.json']
if ext in md_exts:
    if ext == '.json':
        # json 包代码块渲染（marked 按 pre 显示正文）
        try:
            with open(full_path, 'r', encoding='utf-8', errors='replace') as fh:
                body = fh.read(200000)
        except Exception as e:
            return {"widgettype": "Message", "options": {"title": "查看失败", "message": str(e)[:200]}}
        return {
            "widgettype": "PopupWindow",
            "options": {"title": name + " (查看)", "width": "85%", "height": "85%", "auto_open": True, "resizable": True},
            "subwidgets": [{
                "widgettype": "VScrollPanel",
                "options": {"css": "filler", "width": "100%", "height": "100%"},
                "subwidgets": [{
                    "widgettype": "MdWidget",
                    "options": {"mdtext": "```json\n" + body + "\n```", "width": "100%"}
                }]
            }]
        }
    return {
        "widgettype": "PopupWindow",
        "options": {"title": name + " (查看)", "width": "85%", "height": "85%", "auto_open": True, "resizable": True},
        "subwidgets": [{
            "widgettype": "VScrollPanel",
            "options": {"css": "filler", "width": "100%", "height": "100%"},
            "subwidgets": [{
                "widgettype": "MdWidget",
                "options": {"md_url": file_url, "width": "100%"}
            }]
        }]
    }

# 其他 → 下载查看
download_url = file_url + "&download=1"
download_script = (
    "window.open(" + _json.dumps(download_url) + ",'_blank');"
)
return {
    "widgettype": "PopupWindow",
    "options": {"title": name, "cwidth": 34, "cheight": 12, "auto_open": True, "resizable": True},
    "subwidgets": [
        {"widgettype": "Text", "options": {"text": "该文件类型需下载后查看", "cfontsize": 1, "padding": "16px", "halign": "middle"}},
        {"widgettype": "Button", "options": {"label": "下载文件", "css": "primary"},
         "binds": [{"wid": "self", "event": "click", "actiontype": "script", "target": "self", "script": download_script}]}
    ]
}