import requests
from git_flow import GitFlowError
from git_flow.git import Commit
from git_flow.remote.base import RemoteAPI


class GiteaRemoteAPI(RemoteAPI):
    def __init__(self, base_url: str, repository: str, token: str) -> None:
        super().__init__(repository, token)
        self.base_url = base_url

    def create_pull_request(
        self,
        source: str,
        destination: str,
        title: str | None = None,
        description: str | None = None,
        close_source_branch: bool = True
    ) -> str:
        response = requests.post(
            self.get_endpoint("/pulls"),
            headers=self.get_headers(),
            json={
                "title": title,
                "body": description,
                "head": source,
                "base": destination,
            },
        )

        if response.ok:
            return "PR creado exitosamente: " + response.json()["html_url"]
        else:
            raise GitFlowError("Ocurrió un error al crear el PR: " + response.text)

    def create_tag(self, tag: str, commit: str) -> str:
        response = requests.post(
            self.get_endpoint("/tags"),
            headers=self.get_headers(),
            json={"tag_name": tag, "target": commit},
        )

        if response.ok:
            return "Tag creado exitosamente: " + tag
        else:
            raise GitFlowError("Ocurrió un error al crear el tag: " + response.text)

    def get_merge_commits(self, merge_commit: str) -> list[Commit]:
        pr = self.get_json(self.get_endpoint(f"/commits/{merge_commit}/pull")).json()
        url = self.get_endpoint(f"/pulls/{pr['number']}/commits")
        items: list = []
        page = 1

        # Gitea pagina con page / limit
        while True:
            batch = self.get_json(
                url, {"page": page, "limit": 50, "files": "false", "verification": "false"}
            ).json()
            items += batch

            if len(batch) < 50:
                break

            page += 1

        # La API los devuelve del más viejo al más nuevo
        return [
            Commit(
                c["sha"][:7],
                c["commit"]["message"].splitlines()[0],
                c["commit"]["author"]["email"],
                len(c["parents"]) > 1,
            )
            for c in reversed(items)
        ]

    def list_tags(self, suffix: str = "") -> list[str]:
        tags = self.get_all_pages(self.get_endpoint("/tags"), 50, size_param="limit")

        return [t["name"] for t in tags]

    def get_endpoint(self, resource: str) -> str:
        return f"{self.base_url}/api/v1/repos/{self.repository}{resource}"
    
    def get_headers(self):
        return {
            "Accept": "application/json",
            "Content-Type": "application/json",
            "Authorization": "token " + self.token,
        }