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use authzd::EntitiesRepository;
use authzd::gitlab::Api;
use clap::{Parser, Subcommand};

#[derive(Parser, Debug)]
#[command(
    author,
    version,
    about = "Authorization CLI for managing Cedar entities and policies"
)]
struct Args {
    #[command(subcommand)]
    command: Commands,
}

#[derive(Subcommand, Debug)]
enum Commands {
    /// Generate entities from GitLab API
    Generate {
        /// Project ID or path (e.g., gitlab-org/gitlab)
        #[arg(short, long)]
        project: String,

        /// Output file path
        #[arg(short, long, default_value = "entities.json")]
        output: String,

        /// GitLab API token
        #[arg(short, long, env = "GITLAB_TOKEN")]
        token: String,

        /// GitLab instance URL
        #[arg(
            short = 'H',
            long,
            env = "GITLAB_HOST",
            default_value = "https://gitlab.com"
        )]
        host: String,
    },
}

#[tokio::main]
async fn main() -> Result<(), Box<dyn std::error::Error>> {
    let args = Args::parse();

    match args.command {
        Commands::Generate {
            project,
            output,
            token,
            host,
        } => {
            let repository = EntitiesRepository::new(Api::new(token, host));
            let entities = repository.all(project).await?;
            let json = serde_json::to_string_pretty(&entities)?;
            std::fs::write(output, json)?;
        }
    }

    Ok(())
}