package config

import (
    "bufio"
    "os"
    "path/filepath"
    "strings"
)

func LoadEnv() {
    paths := []string{
        ".env.local",
        filepath.Join("server", ".env.local"),
    }
    for _, p := range paths {
        if loadFile(p) {
            return
        }
    }
}

func loadFile(path string) bool {
    f, err := os.Open(path)
    if err != nil {
        return false
    }
    defer f.Close()
    s := bufio.NewScanner(f)
    for s.Scan() {
        line := strings.TrimSpace(s.Text())
        if line == "" || strings.HasPrefix(line, "#") {
            continue
        }
        idx := strings.Index(line, "=")
        if idx <= 0 {
            continue
        }
        k := strings.TrimSpace(line[:idx])
        v := strings.TrimSpace(line[idx+1:])
        if _, ok := os.LookupEnv(k); !ok || os.Getenv(k) == "" {
            os.Setenv(k, v)
        }
    }
    return true
}