package application

import (
	"fmt"
	"strings"
	"testing"
)

func TestPaymentConfigDisabledDoesNotRequireCredentials(t *testing.T) {
	c, err := paymentConfig(func(string) string { return "" }, nil)
	if err != nil || c.Enabled {
		t.Fatalf("config=%+v err=%v", c, err)
	}
}
func TestPaymentConfigLoadsOnlyServerCredentialsAndValidatesLimits(t *testing.T) {
	values := map[string]string{
		"WECHAT_PAY_ENABLED": "true", "WECHAT_PAY_MCH_ID": "merchant", "WECHAT_PAY_APP_ID": "wxapp",
		"WECHAT_PAY_NOTIFY_URL":      "https://pay.example.test/api/payments/wechat/notify",
		"WECHAT_PAY_MERCHANT_SERIAL": "serial", "WECHAT_PAY_API_V3_KEY": strings.Repeat("a", 32),
		"WECHAT_PAY_PUBLIC_KEY_ID": "PUB_KEY_ID_test", "WECHAT_PAY_PRIVATE_KEY_FILE": "/private/key.pem",
		"WECHAT_PAY_PUBLIC_KEY_PEM": "PUBLIC\\nKEY", "WECHAT_PAY_MIN_AMOUNT_FEN": "1",
		"WECHAT_PAY_PRESET_AMOUNTS_FEN": "1,10000,50000",
	}
	read := func(path string) ([]byte, error) {
		if path != "/private/key.pem" {
			return nil, fmt.Errorf("unexpected file")
		}
		return []byte("PRIVATE"), nil
	}
	c, err := paymentConfig(func(key string) string { return values[key] }, read)
	if err != nil || c.MinAmountFen != 1 || c.PrivateKeyPEM != "PRIVATE" || c.WechatPublicKeyPEM != "PUBLIC\nKEY" || len(c.PresetAmountsFen) != 3 {
		t.Fatalf("config load err=%v", err)
	}
	for _, test := range []struct{ key, value string }{
		{"WECHAT_PAY_NOTIFY_URL", "http://pay.example.test/api/payments/wechat/notify"},
		{"WECHAT_PAY_NOTIFY_URL", "https://user:secret@pay.example.test/api/payments/wechat/notify"},
		{"WECHAT_PAY_API_V3_KEY", "secret"}, {"WECHAT_PAY_MAX_AMOUNT_FEN", "1000001"},
		{"WECHAT_PAY_PRESET_AMOUNTS_FEN", "100,100"}, {"WECHAT_PAY_PRESET_AMOUNTS_FEN", "1.50"},
	} {
		old := values[test.key]
		values[test.key] = test.value
		_, err := paymentConfig(func(key string) string { return values[key] }, read)
		values[test.key] = old
		if err == nil || strings.Contains(err.Error(), "user:secret") {
			t.Fatalf("key=%s err=%v", test.key, err)
		}
	}
}