package config

import "os"
import "path/filepath"
import "testing"
import "time"

func TestLoadDefaults(t *testing.T) {
	var cfg Config
	var err error
	cfg, err = Load("")
	if err != nil {
		t.Fatalf("Load() error: %v", err)
	}
	if cfg.DBDriver == "" || cfg.DBDSN == "" {
		t.Fatalf("defaults not populated: driver=%q dsn=%q", cfg.DBDriver, cfg.DBDSN)
	}
	if cfg.GitHTTPPrefix != "/git" {
		t.Fatalf("unexpected git prefix default: %s", cfg.GitHTTPPrefix)
	}
	if cfg.FrontendDir == "" {
		t.Fatalf("frontend_dir default missing")
	}
}

func TestLoadFromJSONAndEnvOverride(t *testing.T) {
	var dir string
	var path string
	var data string
	var err error
	var cfg Config
	dir = t.TempDir()
	path = filepath.Join(dir, "config.json")
	data = `{"db_driver":"sqlite","db_dsn":"file:test.db","auth_mode":"HyBrId","git_http_prefix":"/g"}`
	err = os.WriteFile(path, []byte(data), 0o644)
	if err != nil {
		t.Fatalf("write config file: %v", err)
	}
	t.Setenv("CODIT_DB_DSN", "file:override.db")
	t.Setenv("CODIT_FRONTEND_DIR", "/srv/codit/frontend")
	cfg, err = Load(path)
	if err != nil {
		t.Fatalf("Load() error: %v", err)
	}
	if cfg.DBDSN != "file:override.db" {
		t.Fatalf("env override failed: %s", cfg.DBDSN)
	}
	if cfg.AuthMode != "hybrid" {
		t.Fatalf("auth_mode normalization failed: %s", cfg.AuthMode)
	}
	if cfg.FrontendDir != "/srv/codit/frontend" {
		t.Fatalf("frontend_dir env override failed: %s", cfg.FrontendDir)
	}
}

func TestDurationUnmarshalJSON(t *testing.T) {
	var d Duration
	var err error
	err = d.UnmarshalJSON([]byte(`"90m"`))
	if err != nil {
		t.Fatalf("UnmarshalJSON() string duration error: %v", err)
	}
	if d.Duration() != 90*time.Minute {
		t.Fatalf("unexpected duration: %v", d.Duration())
	}
	err = d.UnmarshalJSON([]byte(`60000000000`))
	if err != nil {
		t.Fatalf("UnmarshalJSON() numeric duration error: %v", err)
	}
	if d.Duration() != time.Duration(60000000000) {
		t.Fatalf("unexpected numeric duration: %v", d.Duration())
	}
}