//! Command arguments and presentation. Raw execution archives never depend on the inline budget.
use crate::*;
use clap::{Parser, Subcommand};
#[derive(Parser, Debug)]
#[command(name = "box", about = "Disposable build and test boxes")]
pub struct Args {
    #[arg(long, global = true, help = "Containers service hostname[:port]")]
    pub host: Option<String>,
    #[command(subcommand)]
    pub command: Operation,
}
#[derive(Subcommand, Debug)]
pub enum Operation {
    Create {
        #[arg(long)]
        flake: Option<String>,
        #[arg(long, value_parser = clap::value_parser!(u32).range(1..))]
        ttl: Option<u32>,
    },
    Exec {
        id: String,
        #[arg(long, default_value_t = 60, value_parser = clap::value_parser!(u32).range(1..=1800))]
        timeout: u32,
        #[arg(long, default_value_t = excerpt::DEFAULT_BYTES)]
        inline_bytes: u32,
        #[arg(last = true, required = true)]
        cmd: Vec<String>,
    },
    Put {
        id: String,
        world_path: String,
        box_path: String,
    },
    Get {
        id: String,
        box_path: String,
        world_path: String,
    },
    Logs {
        id: String,
    },
    Ls,
    Rm {
        id: String,
    },
}
fn notices(result: &Executed) {
    for (name, path) in [
        ("stdout", &result.stdout_path),
        ("stderr", &result.stderr_path),
        ("result", &result.output_log),
    ] {
        if let Some(path) = path {
            eprintln!("box {name} archive: {path}");
        }
    }
    if let Some(notice) = &result.output_notice {
        eprintln!("box: {notice}");
    }
    if result.timed_out {
        eprintln!("box: command timed out");
    }
}
pub fn run(args: Args) -> Result<i32> {
    let h = args.host;
    let service = BoxPlugin;
    match args.command {
        Operation::Create { flake, ttl } => {
            let config = Config {
                nixos: flake.is_none().then(|| Nixos::Text(NODE_MODULE.into())),
                flake,
                system: None,
            };
            let c = service.create(Create {
                config,
                ttl_secs: ttl,
                owner: Some("box CLI".into()),
                host: h,
            })?;
            println!("{}", c.id);
            if c.state != "running" {
                if let Some(tail) = c.build_log_tail {
                    eprintln!("{tail}");
                }
                if let Some(path) = c.build_log_path {
                    eprintln!("box build archive: {path}");
                }
                return Err(error(format!(
                    "box {} failed: {}; remove with box rm",
                    c.id,
                    c.error.unwrap_or_default()
                )));
            }
        }
        Operation::Exec {
            id,
            timeout,
            inline_bytes,
            cmd,
        } => {
            let result = service.exec(Exec {
                id,
                cmd: Command::Argv(cmd),
                stdin: None,
                timeout_secs: Some(timeout),
                inline_bytes: Some(inline_bytes),
                host: h,
            })?;
            std::io::stdout().write_all(result.stdout.as_bytes())?;
            std::io::stderr().write_all(result.stderr.as_bytes())?;
            notices(&result);
            return Ok(result.exit);
        }
        Operation::Put {
            id,
            world_path,
            box_path,
        } => {
            if Path::new(&world_path).is_dir() {
                service.put_tree(PutTree {
                    id,
                    from_vfs_dir: world_path,
                    to_dir: box_path,
                    host: h,
                })?;
            } else {
                service.put_file(PutFile {
                    id,
                    path: box_path,
                    text: None,
                    from_vfs: Some(world_path),
                    host: h,
                })?;
            }
        }
        Operation::Get {
            id,
            box_path,
            world_path,
        } => {
            let host = resolve(&id, h.as_deref())?;
            let kind = checked(
                &host,
                &id,
                json!([
                    "sh",
                    "-c",
                    "if [ -d \"$1\" ]; then printf directory; elif [ -f \"$1\" ]; then printf file; else exit 1; fi",
                    "sh",
                    box_path
                ]),
            )?;
            if kind == "directory" {
                service.get_tree(GetTree {
                    id,
                    from_dir: box_path,
                    to_vfs_dir: world_path,
                    host: h,
                })?;
            } else {
                service.get_file(GetFile {
                    id,
                    path: box_path,
                    to_vfs: Some(world_path),
                    host: h,
                })?;
            }
        }
        Operation::Logs { id } => {
            let log = service.log(Id { id, host: h })?;
            print!("{}", log.text);
            eprintln!("box build archive: {} ({} bytes)", log.path, log.bytes);
            if let Some(notice) = log.notice {
                eprintln!("box: {notice}");
            }
        }
        Operation::Ls => {
            let list = service.list(List { host: h })?;
            for c in list.containers {
                println!("{}\t{}\t{}", c.id, c.state, c.expires_at);
            }
        }
        Operation::Rm { id } => {
            service.delete(Id { id, host: h })?;
        }
    }
    Ok(0)
}
#[cfg(test)]
mod tests {
    use super::*;
    #[test]
    fn argument_forms_and_validation() {
        for args in [
            vec!["box", "create"],
            vec![
                "box",
                "create",
                "--flake",
                "github:example/project#container",
                "--ttl",
                "600",
            ],
            vec![
                "box",
                "exec",
                "tc-abc123",
                "--timeout",
                "5",
                "--",
                "sh",
                "-c",
                "exit 7",
            ],
            vec!["box", "put", "tc-abc123", "dir", "/work"],
            vec!["box", "get", "tc-abc123", "/work", "out"],
            vec!["box", "logs", "tc-abc123"],
            vec!["box", "ls"],
            vec!["box", "rm", "tc-abc123"],
            vec!["box", "--host", "localhost:8093", "ls"],
        ] {
            assert!(Args::try_parse_from(args).is_ok());
        }
        for args in [
            vec!["box", "create", "--ttl", "0"],
            vec!["box", "exec", "tc-abc123", "--"],
            vec![
                "box",
                "exec",
                "tc-abc123",
                "--timeout",
                "1801",
                "--",
                "true",
            ],
            vec!["box", "exec", "tc-abc123", "true"],
            vec!["box", "put", "tc-abc123", "a"],
            vec!["box", "unknown"],
        ] {
            assert!(Args::try_parse_from(args).is_err());
        }
        let args = Args::try_parse_from([
            "box",
            "exec",
            "tc-abc123",
            "--inline-bytes",
            "0",
            "--",
            "echo",
            "--flag",
            "space here",
        ])
        .unwrap();
        match args.command {
            Operation::Exec {
                cmd, inline_bytes, ..
            } => {
                assert_eq!(cmd, ["echo", "--flag", "space here"]);
                assert_eq!(inline_bytes, 0);
            }
            _ => panic!("wrong operation"),
        }
    }
}