# 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()

# 二级 URL 必须与本级同参数（session_id + pipeline_id 双透传，2026-09-17 根因同 upload_url）：
# 通用助手（pipeline_id=_generic、无 session_id）下漏拼 pipeline_id 会让 workspace_file.dspy
# 回退全局项目指针 → 在错误空间找文件 → MdWidget 显示「文件不存在」JSON。
_fq = []
if session_id:
    _fq.append("session_id=" + session_id)
if pipeline_id:
    _fq.append("pipeline_id=" + pipeline_id)
_fq_s = ("&" + "&".join(_fq)) if _fq else ""
file_url = entire_url("/pipeline-sdlc/api/workspace_file.dspy") + "?id=" + quote(file_id) + _fq_s

# 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%"}
            }]
        }]
    }

# 媒体文件 → 直接用播放控件打开（2026-09-18 用户要求：查看即播放，不再让下载）
# 控件均已注册进 bricks.Factory（videoplayer.js/audio.js/image.js），声明式 widgetBuild 可解析；
# workspace_file.dspy 已用 FileResponse 提供媒体流（支持 Range 请求，可拖动进度）。
video_exts = ['.mp4', '.m3u8', '.mpd', '.webm', '.mov', '.avi', '.mkv']
audio_exts = ['.mp3', '.wav', '.aac', '.flac', '.m4a', '.ogg']
image_exts = ['.png', '.jpg', '.jpeg', '.gif', '.svg', '.webp', '.bmp', '.ico']

if ext in video_exts:
    return {
        "widgettype": "PopupWindow",
        "options": {"title": name + " (播放)", "width": "70%", "height": "70%", "auto_open": True, "resizable": True},
        "subwidgets": [{
            "widgettype": "VideoPlayer",
            "options": {"url": file_url, "width": "100%", "height": "100%"}
        }]
    }

if ext in audio_exts:
    return {
        "widgettype": "PopupWindow",
        "options": {"title": name + " (播放)", "width": "50%", "height": "30%", "auto_open": True, "resizable": True},
        "subwidgets": [{
            "widgettype": "AudioPlayer",
            "options": {"url": file_url, "width": "100%", "height": "100%"}
        }]
    }

if ext in image_exts:
    return {
        "widgettype": "PopupWindow",
        "options": {"title": name + " (查看)", "width": "70%", "height": "70%", "auto_open": True, "resizable": True},
        "subwidgets": [{
            "widgettype": "Image",
            "options": {"url": file_url, "width": "100%", "height": "100%"}
        }]
    }

# office 文档（docx/xlsx）→ univer-office 在线查看（mode=view 只读，不显示保存按钮）+ 下载按钮
# （2026-09-18 用户要求：查看和编辑都在线，另提供下载按钮；同日 xlsx 接入）
office_exts = ['.docx', '.xlsx', '.xlsm']
if ext in office_exts:
    univer_url = entire_url("/univer-office/") + "?file=" + quote(file_id) + "&mode=view" + _fq_s
    download_url_v = file_url + "&download=1"
    download_script_v = (
        "window.open(" + _json.dumps(download_url_v) + ",'_blank');"
    )
    return {
        "widgettype": "PopupWindow",
        "options": {"title": name + " (在线查看)", "width": "85%", "height": "85%", "auto_open": True, "resizable": True},
        "subwidgets": [{
            "widgettype": "VBox",
            "options": {"css": "filler", "height": "100%", "width": "100%", "gap": "6px", "padding": "6px"},
            "subwidgets": [
                {"widgettype": "HBox",
                 "options": {"width": "100%", "gap": "8px", "alignItems": "center"},
                 "subwidgets": [
                     {"widgettype": "Button", "options": {"label": "⬇ 下载", "css": "small"},
                      "binds": [{"wid": "self", "event": "click", "actiontype": "script", "target": "self", "script": download_script_v}]},
                     {"widgettype": "Text", "options": {"text": "在线查看模式（只读）；如需修改请用「编辑」", "cfontsize": 0.8, "color": "#94a3b8"}},
                 ]},
                {"widgettype": "Iframe", "options": {"url": univer_url, "css": "filler", "width": "100%", "height": "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": {"otext": "该文件类型需下载后查看", "text": "该文件类型需下载后查看", "i18n": True, "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}]}
    ]
}