//
#[cfg(test)]
mod tests;

mod webhook;

use git::forge::commit::Status;
use git_next_config as config;
use git_next_git as git;

use kxio::network::{self, Network};
use tracing::warn;

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

    fn is_message_authorised(
        &self,
        msg: &config::WebhookMessage,
        expected: &config::WebhookAuth,
    ) -> bool {
        let authorization = msg.header("authorization");
        tracing::info!(?authorization, %expected, "is message authorised?");
        authorization
            .and_then(|header| header.strip_prefix("Basic ").map(|v| v.to_owned()))
            .and_then(|value| config::WebhookAuth::new(value.as_str()).ok())
            .map(|auth| &auth == expected)
            .unwrap_or(false)
    }

    fn parse_webhook_body(
        &self,
        body: &config::webhook::message::Body,
    ) -> git::forge::webhook::Result<config::webhook::Push> {
        webhook::parse_body(body)
    }

    async fn commit_status(&self, commit: &git::Commit) -> Status {
        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 {
                        ForgejoState::Success => Status::Pass,
                        ForgejoState::Pending => Status::Pending,
                        ForgejoState::Failure => Status::Fail,
                        ForgejoState::Error => Status::Fail,
                        ForgejoState::Blank => Status::Pending,
                    },
                    None => {
                        warn!("No status found for commit");
                        Status::Pending // assume issue is transient and allow retry
                    }
                }
            }
            Err(e) => {
                warn!(?e, "Failed to get commit status");
                Status::Pending // assume issue is transient and allow retry
            }
        }
    }

    async fn list_webhooks(
        &self,
        webhook_url: &config::server::WebhookUrl,
    ) -> git::forge::webhook::Result<Vec<config::WebhookId>> {
        webhook::list(&self.repo_details, webhook_url, &self.net).await
    }

    async fn unregister_webhook(
        &self,
        webhook_id: &config::WebhookId,
    ) -> git::forge::webhook::Result<()> {
        webhook::unregister(webhook_id, &self.repo_details, &self.net).await
    }

    async fn register_webhook(
        &self,
        webhook_url: &config::server::WebhookUrl,
    ) -> git::forge::webhook::Result<config::RegisteredWebhook> {
        webhook::register(&self.repo_details, webhook_url, &self.net).await
    }
}

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

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