package config

import (
	"testing"

	sdkconfig "github.com/go-admin-team/go-admin-core/sdk/config"
)

func TestApplyEnvironment(t *testing.T) {
	originalDefault := *sdkconfig.DatabaseConfig
	originalDatabases := sdkconfig.DatabasesConfig
	originalApplication := *sdkconfig.ApplicationConfig
	t.Cleanup(func() {
		*sdkconfig.DatabaseConfig = originalDefault
		sdkconfig.DatabasesConfig = originalDatabases
		*sdkconfig.ApplicationConfig = originalApplication
	})
	sdkconfig.DatabasesConfig = map[string]*sdkconfig.Database{"*": {Driver: "sqlite3", Source: "old.db"}}
	t.Setenv("GOAUTO_DB_DSN", "user:secret@tcp(127.0.0.1:3306)/goauto")
	t.Setenv("GOAUTO_DB_DRIVER", "mysql")
	t.Setenv("GOAUTO_SERVER_PORT", "18000")

	ApplyEnvironment()

	if sdkconfig.DatabaseConfig.Driver != "mysql" || sdkconfig.DatabaseConfig.Source == "" {
		t.Fatal("default database was not overridden")
	}
	if database := sdkconfig.DatabasesConfig["*"]; database.Driver != "mysql" || database.Source != sdkconfig.DatabaseConfig.Source {
		t.Fatal("host database was not overridden")
	}
	if sdkconfig.ApplicationConfig.Port != 18000 {
		t.Fatalf("application port = %d, want 18000", sdkconfig.ApplicationConfig.Port)
	}
}

func TestApplyEnvironmentIgnoresEmptyDatabaseAndInvalidPort(t *testing.T) {
	original := *sdkconfig.DatabaseConfig
	originalApplication := *sdkconfig.ApplicationConfig
	t.Cleanup(func() {
		*sdkconfig.DatabaseConfig = original
		*sdkconfig.ApplicationConfig = originalApplication
	})
	sdkconfig.DatabaseConfig.Driver = "sqlite3"
	sdkconfig.DatabaseConfig.Source = "local.db"
	sdkconfig.ApplicationConfig.Port = 8000
	t.Setenv("GOAUTO_DB_DSN", "")
	t.Setenv("GOAUTO_SERVER_PORT", "70000")

	ApplyEnvironment()

	if sdkconfig.DatabaseConfig.Driver != "sqlite3" || sdkconfig.DatabaseConfig.Source != "local.db" {
		t.Fatal("empty environment unexpectedly changed database config")
	}
	if sdkconfig.ApplicationConfig.Port != 8000 {
		t.Fatal("invalid environment unexpectedly changed application port")
	}
}