mod gitea;
mod semantic;
mod validate_pr;

use clap::Command;
use tracing_subscriber::{filter::LevelFilter, EnvFilter};

use self::gitea::{get_highest_semver_from_tags, ReleaseRequest, UpdateReleaseRequest};

const VERSION: &'static str = "<dev>";

#[tokio::main]
async fn main() -> eyre::Result<()> {
    if let Err(e) = dotenv::dotenv() {
        tracing::debug!(error = e.to_string(), "could not load.env")
    }
    color_eyre::install().unwrap();

    let matches = clap::Command::new("releaser")
        .version(VERSION)
        .author("kjuulh <contact@kjuulh.io>")
        .about("A CLI app for releasing software and managing versions")
        .arg(
            clap::Arg::new("quiet")
                .long("quiet")
                .short('q')
                .action(clap::ArgAction::SetTrue),
        )
        .subcommand(Command::new("release").about("Release the software"))
        .subcommand(
            Command::new("validate").about("Validate the semantic versioning of the software"),
        )
        .subcommand(
            Command::new("validate:pr")
                .about("Validate the semantic versioning of the software")
                .arg(clap::Arg::new("owner").long("owner").required(true))
                .arg(clap::Arg::new("repo").long("repo").required(true))
                .arg(
                    clap::Arg::new("pull_request_id")
                        .long("pull-request-id")
                        .required(true)
                        .value_parser(clap::value_parser!(u32).range(0..)),
                )
                .arg(
                    clap::Arg::new("current_version")
                        .long("current-version")
                        .required(true),
                ),
        )
        .subcommand(
            Command::new("bump")
                .about("Bump the semantic versioning in git tags")
                .arg(clap::Arg::new("owner").long("owner").required(true))
                .arg(clap::Arg::new("repo").long("repo").required(true))
                .arg(clap::Arg::new("branch").long("branch").required(true)),
        )
        .subcommand(
            Command::new("release:gitea")
                .about("Create a release on gitea")
                .arg(clap::Arg::new("owner").long("owner").required(true))
                .arg(clap::Arg::new("repo").long("repo").required(true))
                .arg(clap::Arg::new("version").long("version").required(true))
                .arg(clap::Arg::new("branch").long("branch").required(true))
                .arg(
                    clap::Arg::new("generate-changelog")
                        .long("generate-changelog")
                        .action(clap::ArgAction::SetTrue),
                ),
        )
        .get_matches();

    let quiet = matches.get_one::<bool>("quiet");
    match quiet {
        Some(true) => {}
        _ => {
            tracing_subscriber::fmt()
                .pretty()
                .with_env_filter(
                    EnvFilter::from_default_env().add_directive(LevelFilter::INFO.into()),
                )
                .init();
        }
    }

    let base_url = &std::env::var("GITEA_BASE_URL").unwrap();
    let token = &std::env::var("GITEA_ACCESS_TOKEN").unwrap();

    match matches.subcommand() {
        Some(("release", _sub_matches)) => {}
        Some(("validate", _sub_matches)) => {}
        Some(("validate:pr", sub_matches)) => {
            let owner = sub_matches.get_one::<String>("owner").unwrap();
            let repo = sub_matches.get_one::<String>("repo").unwrap();
            let pull_request_id = sub_matches.get_one::<u32>("pull_request_id").unwrap();
            let current_version = sub_matches.get_one::<String>("current_version").unwrap();

            match validate_pr::validate_pr(&owner, &repo, *pull_request_id, &current_version)
                .await?
            {
                Some(version) => {
                    tracing::info!(version = version, "bumping version");

                    print!("{}\n", version)
                }
                None => tracing::info!(version = current_version, "no version bump required!"),
            }
        }
        Some(("bump", sub_matches)) => {
            let owner = sub_matches.get_one::<String>("owner").unwrap();
            let repo = sub_matches.get_one::<String>("repo").unwrap();
            let branch = sub_matches.get_one::<String>("branch").unwrap();
            let default_version = "0.0.0";

            let _version = match get_highest_semver_from_tags(base_url, owner, repo, token).await {
                Ok((version, tag)) => {
                    tracing::debug!(version = version.to_string(), "got tag from repo");

                    match validate_pr::validate_commits(
                        &owner,
                        &repo,
                        &tag.commit.sha,
                        branch,
                        &version.to_string(),
                    )
                    .await?
                    {
                        Some(version) => {
                            tracing::info!(version = version, "bumping version");

                            print!("{}\n", version)
                        }
                        None => {
                            tracing::info!(version = default_version, "no version bump required!")
                        }
                    }

                    version.to_string()
                }
                _ => default_version.to_string(),
            };
        }
        Some(("release:gitea", sub_matches)) => {
            let default_generate_changelog = false;
            let owner = sub_matches.get_one::<String>("owner").unwrap();
            let repo = sub_matches.get_one::<String>("repo").unwrap();
            let version = sub_matches.get_one::<String>("version").unwrap();
            let branch = sub_matches.get_one::<String>("branch").unwrap();
            let _generate_changelog = sub_matches
                .get_one::<bool>("generate-changelog")
                .unwrap_or(&default_generate_changelog);

            match crate::gitea::is_newest_release_draft(base_url, owner, repo, token).await {
                Ok((true, release)) => {
                    let _resp = crate::gitea::modify_release(
                        base_url,
                        owner,
                        repo,
                        token,
                        release.id,
                        &UpdateReleaseRequest {
                            body: None,
                            draft: Some(release.draft),
                            tag_name: Some(version.clone()),
                            name: Some(version.clone()),
                            prerelease: None,
                            target_commitish: Some(branch.clone()),
                        },
                    )
                    .await?;

                    tracing::info!("updated release")
                }
                _ => {
                    let resp = crate::gitea::create_gitea_release(
                        base_url,
                        owner,
                        repo,
                        token,
                        &ReleaseRequest {
                            tag_name: version.clone(),
                            target_commitish: branch.clone(),
                            name: version.clone(),
                            body: "".into(),
                            draft: true,
                            prerelease: false,
                        },
                    )
                    .await?;

                    tracing::info!(url = resp.url, "created release")
                }
            }
        }
        _ => unreachable!(),
    }

    Ok(())
}