"""
Module docs
"""
import requests  # type: ignore
import zipfile

from github import Github, InputGitTreeElement, GitTree
from github.Issue import Issue
from github.Repository import Repository
import json
import yaml

from liteyuki_flow.const import OPENED, EDITED, CLOSED, REOPENED, RESOURCE_JSON
from liteyuki_flow.markdown_parser import MarkdownParser
from liteyuki_flow.typ import err, nil


# opened: 创建新的资源包，预审核
# edited: 编辑资源包信息，需重新审核
# closed: 审核通过，修改json并提交
# reopened: 重新打开，无操作

# opened | edited
def pre_check(github: Github, issue: Issue, repo: Repository) -> err:
    parser = MarkdownParser(issue.body)
    parser.parse_front_matters()
    name = parser.front_matters.get("name")
    desc = parser.front_matters.get("desc")
    url = parser.front_matters.get("url")
    homepage = parser.front_matters.get("homepage")  # optional
    author = parser.front_matters.get("author")
    if not all((name, desc, url, author)):
        issue.create_comment("Name, desc, url, homepage and author are required.")
        return ValueError("Name, desc, url, homepage and author are required.")

    # 下载并解析资源包
    r = requests.get(url)
    if r.status_code != 200:
        issue.create_comment("Download failed.")
        return ValueError("Download failed.")

    with open(f"tmp/{name}.zip", "wb") as f:
        f.write(r.content)
    # 解压
    with zipfile.ZipFile(f"tmp/{name}.zip", "r") as z:
        z.extractall(f"tmp/{name}")

    # 检测包内metadata.yml文件
    try:
        data = yaml.load(open(f"tmp/{name}/metadata.yml"), Loader=yaml.SafeLoader)
    except Exception:
        issue.create_comment("metadata.yml not found or invalid.")
        return ValueError("metadata.yml not found or invalid.")

    # 检测必要字段 name，description，version
    if not all((data.get("name"), data.get("description"), data.get("version"))):
        issue.create_comment("name, description and version are required in metadata.yml.")
        return ValueError("name, description and version are required in metadata.yml.")

    # 不检测重复资源包，因为资源包可能有多个版本
    # 检测通过，编辑原issue
    metadata_markdown = f"**名称**: {data.get('name')}\n**描述**: {data.get('description')}\n**版本**: {data.get('version')}\n"
    for k, v in data.items():
        if k not in ("name", "description", "version"):
            metadata_markdown += f"**{k}**: {v}\n"

    new_issue_body = f"---\nname: {name}\ndesc: {desc}\nurl: {url}\nhomepage: {homepage}\nauthor: {author}\n---\n"
    new_issue_body += f"# Resource: {name}\n"
    new_issue_body += f"## 发布信息\n{desc}\n"
    new_issue_body += f"**名称**: {name}\n"
    new_issue_body += f"**描述**: {desc}\n"
    new_issue_body += f"**作者**: {author}\n"
    new_issue_body += f"**主页**: {homepage}\n"
    new_issue_body += f"**下载**: {url}\n"
    # 遍历其他字段
    for k, v in data.items():
        if k not in ("name", "description", "version"):
            new_issue_body += f"**{k}**: {v}\n"

    issue.edit(new_issue_body)
    issue.create_comment("✅ 预检查通过\n## 元数据\n" + metadata_markdown)
    return nil


# closed
def add_resource(github: Github, issue: Issue, repo: Repository):
    parser = MarkdownParser(issue.body)
    parser.parse_front_matters()
    name = parser.front_matters.get("name")
    desc = parser.front_matters.get("desc")
    url = parser.front_matters.get("url")
    homepage = parser.front_matters.get("homepage")  # optional
    author = parser.front_matters.get("author")

    # 编辑仓库内的json文件
    resources = json.load(open(RESOURCE_JSON))
    resources.append({
            "name"    : name,
            "desc"    : desc,
            "url"     : url,
            "homepage": homepage,
            "author"  : author
    })
    ref = repo.get_git_ref("heads/main")
    tree = repo.create_git_tree(
        base_tree=repo.get_git_commit(ref.object.sha).tree,
        tree=[
                InputGitTreeElement(
                    path=RESOURCE_JSON,
                    mode="100644",
                    type="blob",
                    content=json.dumps(resources, indent=4, ensure_ascii=False)
                )
        ]
    )
    commit = repo.create_git_commit(
        message=f":package: 发布资源: {name}",
        tree=tree,
        parents=[repo.get_git_commit(ref.object.sha)]
    )
    ref.edit(commit.sha)


def handle_resource(github: Github, issue: Issue, repo: Repository, act_type: str):
    if act_type in (OPENED, EDITED):
        pre_check(github, issue, repo)

    elif act_type == CLOSED:
        add_resource(github, issue, repo)
    else:
        print("No operation found for the issue: ", act_type)