module checker

import os
import v.ast
import v.parser
import v.pref

const pkgconfig_test_source = 'module main
#pkgconfig --cflags --libs sdl2

fn main() {}
'

fn test_pkgconfig_is_skipped_for_cross_compilation() {
    sample_dir := os.join_path(@VEXEROOT, 'vlib', 'v', 'pkgconfig', 'test_samples')
    old_path := os.getenv('PKG_CONFIG_PATH')
    old_defaults := os.getenv('PKG_CONFIG_PATH_DEFAULTS')
    defer {
        os.setenv('PKG_CONFIG_PATH', old_path, true)
        os.setenv('PKG_CONFIG_PATH_DEFAULTS', old_defaults, true)
    }
    os.setenv('PKG_CONFIG_PATH', sample_dir, true)
    os.setenv('PKG_CONFIG_PATH_DEFAULTS', '', true)

    native_flags := checked_pkgconfig_flags(pref.get_host_os())
    assert native_flags.any(it == '-lSDL2')
    assert native_flags.any(it.starts_with('-I') && it.contains('SDL2'))

    cross_target := if pref.get_host_os() == .windows { pref.OS.linux } else { pref.OS.windows }
    cross_flags := checked_pkgconfig_flags(cross_target)
    assert cross_flags.len == 0
}

fn checked_pkgconfig_flags(target_os pref.OS) []string {
    mut table := ast.new_table()
    mut pref_ := pref.new_preferences()
    pref_.os = target_os
    mut file := parser.parse_text(pkgconfig_test_source, os.join_path('/virtual', 'main.v'), mut
        table, .skip_comments, pref_)
    mut chk := new_checker(table, pref_)
    chk.check(mut file)
    return table.cflags.map(it.format() or { '' }).filter(it != '')
}