import os
import rand

const vexe = @VEXE

fn test_shared_library_links_with_system_cc() {
    if os.user_os() != 'linux' {
        return
    }
    workdir := os.join_path(os.vtmp_dir(), 'v_shared_link_${rand.ulid()}')
    os.mkdir_all(workdir) or { panic(err) }
    defer {
        os.rmdir_all(workdir) or {}
    }
    lib_src := os.join_path(workdir, 'libfoo.v')
    lib_out := os.join_path(workdir, 'libfoo')
    lib_so := '${lib_out}.so'
    host_src := os.join_path(workdir, 'host.c')
    host_bin := os.join_path(workdir, 'host')
    os.write_file(lib_src, [
        'module libfoo',
        '',
        'pub fn square(x int) int {',
        '\treturn x * x',
        '}',
    ].join('\n')) or { panic(err) }
    os.write_file(host_src, [
        '#include <stdio.h>',
        '',
        'int libfoo__square(int);',
        '',
        'int main(void) {',
        '\tprintf("%d\\n", libfoo__square(2));',
        '\treturn 0;',
        '}',
    ].join('\n')) or { panic(err) }
    run_cmd('${os.quoted_path(vexe)} -shared -o ${os.quoted_path(lib_out)} ${os.quoted_path(lib_src)}') or {
        panic(err)
    }
    assert os.exists(lib_so)
    run_cmd('cc ${os.quoted_path(host_src)} -L${os.quoted_path(workdir)} -lfoo -o ${os.quoted_path(host_bin)}') or {
        panic(err)
    }
    res := run_cmd('LD_LIBRARY_PATH=${os.quoted_path(workdir)} ${os.quoted_path(host_bin)}') or {
        panic(err)
    }
    assert res.output.trim_space() == '4'
}

fn run_cmd(cmd string) !os.Result {
    res := os.execute(cmd)
    if res.exit_code != 0 {
        return error('command failed:\n${cmd}\n${res.output}')
    }
    return res
}