pub mod branch;
mod file;

use git::OpenRepository;
use git_next_config::{BranchName, GitDir, RepoConfig};
use git_next_git::{self as git, GitRef, RepoDetails, Repository};
use kxio::network::{self, Network};
use tracing::{error, info, warn};

use crate::{validation, CommitStatus};

struct ForgeJo;
#[derive(Clone, Debug)]
pub struct ForgeJoEnv {
    repo_details: RepoDetails,
    net: Network,
    repo: Repository,
}
impl ForgeJoEnv {
    pub(super) const fn new(repo_details: RepoDetails, net: Network, repo: Repository) -> Self {
        Self {
            repo_details,
            net,
            repo,
        }
    }
}
#[async_trait::async_trait]
impl super::ForgeLike for ForgeJoEnv {
    fn name(&self) -> String {
        "forgejo".to_string()
    }

    async fn branches_get_all(&self) -> Result<Vec<BranchName>, crate::branch::Error> {
        branch::get_all(&self.repo_details, &self.net).await
    }

    async fn file_contents_get(
        &self,
        branch: &BranchName,
        file_path: &str,
    ) -> Result<String, crate::file::Error> {
        file::contents_get(&self.repo_details, &self.net, branch, file_path).await
    }

    async fn branches_validate_positions(
        &self,
        repository: git::OpenRepository,
        repo_config: RepoConfig,
    ) -> validation::Result {
        branch::validate_positions(self, &repository, repo_config).await
    }

    fn branch_reset(
        &self,
        repository: &git::OpenRepository,
        branch_name: BranchName,
        to_commit: GitRef,
        force: git::push::Force,
    ) -> git::push::Result {
        repository.fetch()?;
        repository.push(&self.repo_details, branch_name, to_commit, force)
    }

    async fn commit_status(&self, commit: &git::Commit) -> CommitStatus {
        let repo_details = &self.repo_details;
        let hostname = &repo_details.forge.hostname();
        let repo_path = &repo_details.repo_path;
        let api_token = &repo_details.forge.token();
        use secrecy::ExposeSecret;
        let token = api_token.expose_secret();
        let url = network::NetUrl::new(format!(
            "https://{hostname}/api/v1/repos/{repo_path}/commits/{commit}/status?token={token}"
        ));

        let request = network::NetRequest::new(
            network::RequestMethod::Get,
            url,
            network::NetRequestHeaders::new(),
            network::RequestBody::None,
            network::ResponseType::Json,
            None,
            network::NetRequestLogging::None,
        );
        let result = self.net.get::<CombinedStatus>(request).await;
        match result {
            Ok(response) => {
                match response.response_body() {
                    Some(status) => match status.state {
                        CommitStatusState::Success => CommitStatus::Pass,
                        CommitStatusState::Pending => CommitStatus::Pending,
                        CommitStatusState::Failure => CommitStatus::Fail,
                        CommitStatusState::Error => CommitStatus::Fail,
                        CommitStatusState::Blank => CommitStatus::Pending,
                    },
                    None => {
                        warn!("No status found for commit");
                        CommitStatus::Pending // assume issue is transient and allow retry
                    }
                }
            }
            Err(e) => {
                error!(?e, "Failed to get commit status");
                CommitStatus::Pending // assume issue is transient and allow retry
            }
        }
    }

    fn repo_clone(&self, gitdir: GitDir) -> Result<OpenRepository, git::repository::Error> {
        let repository = if !gitdir.exists() {
            info!("Local copy not found - cloning...");
            self.repo.git_clone(&self.repo_details)?
        } else {
            self.repo.open(&gitdir)?
        };
        info!("Validating...");
        git::validate(&repository, &self.repo_details)
            .map_err(|e| git::repository::Error::Validation(e.to_string()))?;
        Ok(repository)
    }
}

#[derive(Debug, serde::Deserialize)]
pub struct CombinedStatus {
    pub state: CommitStatusState,
}

#[derive(Debug, serde::Deserialize)]
pub enum CommitStatusState {
    #[serde(rename = "success")]
    Success,
    #[serde(rename = "pending")]
    Pending,
    #[serde(rename = "failure")]
    Failure,
    #[serde(rename = "error")]
    Error,
    #[serde(rename = "")]
    Blank,
}