// DCR — Cargo-like C/C++ project manager.
//
// Copyright (C) 2026 Dexoron (Bezotechestvo Vladimir) <main@dexoron.su>
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program.  If not, see <https://www.gnu.org/licenses/>.

pub fn bin_path(profile: &str, name: &str, target_dir: Option<&str>) -> String {
    match target_dir {
        Some(dir) => format!("{}/{}", dir.trim_end_matches('/'), name),
        None => {
            let arch = std::env::consts::ARCH;
            let target = format!("{arch}-unknown-linux-gnu");
            format!("./target/{target}/{profile}/{name}")
        }
    }
}

pub fn lib_path(profile: &str, name: &str, target_dir: Option<&str>) -> String {
    match target_dir {
        Some(dir) => format!("{}/lib{}.a", dir.trim_end_matches('/'), name),
        None => {
            let arch = std::env::consts::ARCH;
            let target = format!("{arch}-unknown-linux-gnu");
            format!("./target/{target}/{profile}/lib{name}.a")
        }
    }
}

pub fn elf_path(profile: &str, name: &str, target_dir: Option<&str>) -> String {
    match target_dir {
        Some(dir) => format!("{}/{}", dir.trim_end_matches('/'), name),
        None => {
            let arch = std::env::consts::ARCH;
            let target = format!("{arch}-unknown-linux-gnu");
            format!("./target/{target}/{profile}/{name}")
        }
    }
}

pub fn efi_path(profile: &str, name: &str, target_dir: Option<&str>) -> String {
    match target_dir {
        Some(dir) => format!("{}/{}.efi", dir.trim_end_matches('/'), name),
        None => {
            let arch = std::env::consts::ARCH;
            let target = format!("{arch}-unknown-linux-gnu");
            format!("./target/{target}/{profile}/{name}.efi")
        }
    }
}

pub fn shared_lib_path(profile: &str, name: &str, target_dir: Option<&str>) -> String {
    match target_dir {
        Some(dir) => format!("{}/lib{}.so", dir.trim_end_matches('/'), name),
        None => {
            let arch = std::env::consts::ARCH;
            let target = format!("{arch}-unknown-linux-gnu");
            format!("./target/{target}/{profile}/lib{name}.so")
        }
    }
}

#[cfg(test)]
mod tests {
    use super::*;

    #[test]
    fn bin_path_default() {
        let arch = std::env::consts::ARCH;
        let expected = format!("./target/{arch}-unknown-linux-gnu/debug/hello");
        assert_eq!(bin_path("debug", "hello", None), expected);
    }

    #[test]
    fn bin_path_release() {
        let arch = std::env::consts::ARCH;
        let expected = format!("./target/{arch}-unknown-linux-gnu/release/hello");
        assert_eq!(bin_path("release", "hello", None), expected);
    }

    #[test]
    fn bin_path_custom_target() {
        assert_eq!(bin_path("debug", "hello", Some("out")), "out/hello");
    }

    #[test]
    fn bin_path_custom_target_trailing_slash() {
        assert_eq!(bin_path("debug", "hello", Some("out/")), "out/hello");
    }

    #[test]
    fn lib_path_default() {
        let arch = std::env::consts::ARCH;
        let expected = format!("./target/{arch}-unknown-linux-gnu/debug/libmylib.a");
        assert_eq!(lib_path("debug", "mylib", None), expected);
    }

    #[test]
    fn lib_path_custom_target() {
        assert_eq!(lib_path("debug", "mylib", Some("out")), "out/libmylib.a");
    }

    #[test]
    fn shared_lib_path_default() {
        let arch = std::env::consts::ARCH;
        let expected = format!("./target/{arch}-unknown-linux-gnu/debug/libmylib.so");
        assert_eq!(shared_lib_path("debug", "mylib", None), expected);
    }

    #[test]
    fn shared_lib_path_custom_target() {
        assert_eq!(
            shared_lib_path("release", "mylib", Some("dist")),
            "dist/libmylib.so"
        );
    }
}