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

mod webhook;

use git_next_core::{
    self as core,
    git::{self, forge::commit::Status},
    server::RepoListenUrl,
    ForgeNotification, RegisteredWebhook, WebhookAuth, WebhookId,
};

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 duplicate(&self) -> Box<dyn git::ForgeLike> {
        Box::new(self.clone())
    }
    fn name(&self) -> String {
        "forgejo".to_string()
    }

    fn is_message_authorised(&self, msg: &ForgeNotification, expected: &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| WebhookAuth::try_new(value.as_str()).ok())
            .map(|auth| &auth == expected)
            .unwrap_or(false)
    }

    fn parse_webhook_body(
        &self,
        body: &core::webhook::forge_notification::Body,
    ) -> git::forge::webhook::Result<core::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 => {
                    #[cfg(not(tarpaulin_include))]
                    unreachable!(); // response.response_body() is always Some when
                                    // request responseType::Json
                }
            },
            Err(e) => {
                warn!(?e, "Failed to get commit status");
                Status::Pending // assume issue is transient and allow retry
            }
        }
    }

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

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

    async fn register_webhook(
        &self,
        repo_listen_url: &RepoListenUrl,
    ) -> git::forge::webhook::Result<RegisteredWebhook> {
        webhook::register(&self.repo_details, repo_listen_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,
}