import requests
import urllib.parse
from uuid import UUID

DEVOPS_SCOPE = "https://app.vssps.visualstudio.com/.default"
DEVOPS_API_VERSION = "7.1"

# Define a class decorator
def auto_properties(mapping: dict[str,str] | None = None):

    def make_property(name: str):
        private_var = f"_{name}"

        def getter(self):
            try:
                i = getattr(self, private_var)
                if i is not None:
                    return i
            except AttributeError:
                pass

            # Fetch repository details from the API if it is set to None or not existing
            self._get(getattr(self, "_id"))
            return getattr(self, private_var)

        return property(fget=getter)

    def set_auto_properties(self, **kwargs):
        allowed = set(self.__class__.__auto_properties__)
        unknown = [k for k in kwargs if k not in allowed]
        if unknown:
            raise ValueError(f"Unknown properties for {self.__class__.__name__}: {', '.join(unknown)}")
        for k, v in kwargs.items():
            setattr(self, f"_{k}", v)
        return self

    def from_json(self, json_data: dict):
        for name in self.__class__.__auto_properties__:
            setattr(self, f"_{name}", json_data.get(self.__class__.__auto_properties__[name], None))
        return self

    def decorator(cls):
        cls.__auto_properties__ = mapping # Make a copy of the mapping

        # Create properties dynamically
        for name in mapping:
            setattr(cls, name, make_property(name))

        setattr(cls, "set_auto_properties", set_auto_properties)
        setattr(cls, "from_json", from_json)

        return cls
    return decorator

class Organization:
    def __init__(self, org_url: str, token: str, api_version: str = DEVOPS_API_VERSION):
        self._org_url = org_url.rstrip("/") + "/" # Ensure trailing slash
        self._token = token
        self._api_version = api_version

    def get(self, path: str, params: dict = {}):
        request_parameters = {
            "api-version": self._api_version,
            **params
        }
        encoded_path = urllib.parse.quote(path.lstrip("/")) # Ensure single slash between base and path
        url = self._org_url + encoded_path
        r = requests.get(url=url, params=request_parameters, headers={
            "Authorization": f"Bearer {self._token}"
        })
        r.raise_for_status() # Ensure we raise an error for bad responses
        return r

    @property
    def projects(self):
        r = self.get("_apis/projects")

        # Return a list of Project instances
        projects_data = r.json().get("value", [])
        return [
            Project(self,
                    id=proj.get("id"),
                    name=proj.get("name"),
                    url=proj.get("url"),
                    description=proj.get("description"),
                    ) for proj in projects_data
        ]

@auto_properties(names=["name", "url", "description"])
class Project:
    def __init__(self,
                 org: Organization,
                 id: str,
                 name: str | None = None,
                 url: str | None = None,
                 description: str | None = None
                 ):
        self._org = org

        # Check, if the id is a valid UUID
        try:
            self._id = str(UUID(id))
        except ValueError:
            raise ValueError(f"Invalid project ID: {self._id}")

        if name is not None and url is not None and name != "" and url != "":
            self._name = name
            self._url = url
            self._description = description if description is not None else "" # Ensure description is a string
        else:
            # Fetch project details from the API
            r = org.get(f"_apis/projects/{self._id}")
            proj_data = r.json()
            self._id = proj_data.get("id", "")
            self._name = proj_data.get("name", "")
            self._url = proj_data.get("url", "")
            self._description = proj_data.get("description", "")

    def __str__(self):
        return f"Project(name={self._name}, id={self._id})"

    def get(self, path: str, params: dict = {}):
        return self._org.get(f"{self._id}/{path.lstrip('/')}", params=params)

    @property
    def repositories(self):
        r = self.get(f"_apis/git/repositories")

        repos_data = r.json().get("value", [])
        # Return a list of Repository instances
        return [
            Repository(self,
                       id_or_name=repo.get("id"),
                       name=repo.get("name"),
                       url=repo.get("url"),
                       default_branch=repo.get("defaultBranch"),
                       disabled=repo.get("isDisabled"),
                       in_maintenance=repo.get("isInMaintenance"),
                       remote_url=repo.get("remoteUrl"),
                       ssh_url=repo.get("sshUrl"),
                       web_url=repo.get("webUrl"),
                       ) for repo in repos_data
        ]

@auto_properties(names=["name", "url", "default_branch", "disabled", "in_maintenance", "remote_url", "ssh_url", "web_url"])
class Repository:
    def _get(self, repo_name: str):
        r = self._project.get(f"_apis/git/repositories/{urllib.parse.quote(repo_name)}")
        json_data = r.json()
        self._id = json_data.get("id", "")
        self._name = json_data.get("name", "")
        self._url = json_data.get("url", "")
        self._default_branch = json_data.get("defaultBranch", "")
        self._is_disabled = json_data.get("isDisabled", False)
        self._is_in_maintenance = json_data.get("isInMaintenance", False)
        self._remote_url = json_data.get("remoteUrl", "")
        self._ssh_url = json_data.get("sshUrl", "")
        self._web_url = json_data.get("webUrl", "")

    def __init__(self,
                 _project: Project,
                 id_or_name: str,
                 name: str | None = None,
                 url: str | None = None,
                 default_branch: str | None = None,
                 disabled: bool | None = None,
                 in_maintenance: bool | None = None,
                 remote_url: str | None = None,
                 ssh_url: str | None = None,
                 web_url: str | None = None
                 ):

        self._project = _project

        try:
            self._id = str(UUID(id_or_name))
        except ValueError:
            # Id not available, use API to get the repository object
            self._get(id_or_name)
            return

        # set other properties if provided
        self._name = name if name is not None else None
        self._url = url if url is not None else None
        self._default_branch = default_branch if default_branch is not None else None
        self._is_disabled = disabled if disabled is not None else None
        self._is_in_maintenance = in_maintenance if in_maintenance is not None else None
        self._remote_url = remote_url if remote_url is not None else None
        self._ssh_url = ssh_url if ssh_url is not None else None
        self._web_url = web_url if web_url is not None else None

    def __str__(self):
        return f"Repository(name={self._name}, id={self._id})"

    def _get_path(self, path: str, params: dict = {}):
        return self._project.get(f"_apis/git/repositories/{self._id}/{path.lstrip('/')}", params=params)

    def _get_items(self, scope_path: str = "/", recursion_level: str = "oneLevel"):
        r = self._get_path(f"items", params={"scopePath": scope_path, "recursionLevel": recursion_level})
        return r.json()

    @property
    def items(self):
        # GET https://dev.azure.com/{organization}/{project}/_apis/git/repositories/{repositoryId}/items?api-version=7.1

        items_data = self._get_items().get("value", [])
        # Return a list of Item instances
        return [
            Item(self,
                 path=item.get("path"),
                 object_id=item.get("objectId"),
                 git_object_type=item.get("gitObjectType"),
                 commit_id=item.get("commitId"),
                 is_folder=item.get("isFolder"),
                 url=item.get("url"),
                 ) for item in items_data
        ]

@auto_properties(names=["object_id", "git_object_type", "commit_id", "folder", "url"])
class Item:
    def _get(self, path):
        r = self._repository._get_path(f"items/{urllib.parse.quote(path)}")

        for name in self.__auto_properties__:
            setattr(self, f"_{name}", r.json().get(name, None))

    def __init__(self,
                 repository: Repository,
                 path: str,
                 object_id: str | None = None,
                 git_object_type: str | None = None,
                 commit_id: str | None = None,
                 is_folder: bool | None = None,
                 url: str | None = None
                 ):

        self._repository = repository
        self._path = path

        self._object_id = object_id if object_id is not None else None
        self._git_object_type = git_object_type if git_object_type is not None else None
        self._commit_id = commit_id if commit_id is not None else None
        self._is_folder = is_folder if is_folder is not None else None
        self._url = url if url is not None else None