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")
	}
}

// 凭据只能来自环境变量：settings.yml 里不放账号密码，避免它们进 Git。
func TestApplyEnvironmentLoadsSYBCredentials(t *testing.T) {
	original := ExtConfig.SYB
	t.Cleanup(func() { ExtConfig.SYB = original })

	t.Setenv("GOAUTO_SYB_USERNAME", "  operator  ")
	t.Setenv("GOAUTO_SYB_PASSWORD", " se cret ")
	ApplyEnvironment()

	if ExtConfig.SYB.Username != "operator" {
		t.Fatalf("账号应去掉首尾空白: %q", ExtConfig.SYB.Username)
	}
	// 密码原样保留：首尾空白可能是密码的一部分，剪掉就是悄悄改了凭据。
	if ExtConfig.SYB.Password != " se cret " {
		t.Fatalf("密码不应被修改: %q", ExtConfig.SYB.Password)
	}
}

// 同上，yeeke 凭据也只能来自环境变量 (#336)。
func TestApplyEnvironmentLoadsYeekeCredentials(t *testing.T) {
	original := ExtConfig.Yeeke
	t.Cleanup(func() { ExtConfig.Yeeke = original })

	t.Setenv("GOAUTO_YEEKE_USERNAME", "  operator  ")
	t.Setenv("GOAUTO_YEEKE_PASSWORD", " se cret ")
	ApplyEnvironment()

	if ExtConfig.Yeeke.Username != "operator" {
		t.Fatalf("账号应去掉首尾空白: %q", ExtConfig.Yeeke.Username)
	}
	if ExtConfig.Yeeke.Password != " se cret " {
		t.Fatalf("密码不应被修改: %q", ExtConfig.Yeeke.Password)
	}
}

func TestYeekeResolvedFillsBlanksButNeverInventsCredentials(t *testing.T) {
	resolved := Yeeke{}.Resolved()

	if resolved.BaseURL != DefaultYeekeBaseURL {
		t.Fatalf("BaseURL 默认值不对: %q", resolved.BaseURL)
	}
	if resolved.PageSize != DefaultYeekePageSize || resolved.MaxPages != DefaultYeekeMaxPages {
		t.Fatalf("分页默认值不对: %+v", resolved)
	}
	if resolved.OcrMaxAttempts != DefaultYeekeOcrMaxAttempts {
		t.Fatalf("OCR 重试次数默认值不对: %d", resolved.OcrMaxAttempts)
	}
	if resolved.Username != "" || resolved.Password != "" {
		t.Fatal("Resolved 不得给账号密码编造默认值")
	}
	if resolved.OcrURL != "" {
		t.Fatalf("空 OcrURL 不应被填充: %q", resolved.OcrURL)
	}
}

func TestYeekeHasCredentialsRequiresBothFields(t *testing.T) {
	for _, c := range []struct {
		name  string
		yeeke Yeeke
		want  bool
	}{
		{"都有", Yeeke{Username: "a", Password: "b"}, true},
		{"缺密码", Yeeke{Username: "a"}, false},
		{"缺账号", Yeeke{Password: "b"}, false},
		{"账号只有空白", Yeeke{Username: "   ", Password: "b"}, false},
		{"都没有", Yeeke{}, false},
	} {
		if got := c.yeeke.HasCredentials(); got != c.want {
			t.Fatalf("%s: 期望 %v，实际 %v", c.name, c.want, got)
		}
	}
}

func TestSYBResolvedFillsBlanksButNeverInventsCredentials(t *testing.T) {
	resolved := SYB{}.Resolved()

	if resolved.BaseURL != DefaultSYBBaseURL {
		t.Fatalf("BaseURL 默认值不对: %q", resolved.BaseURL)
	}
	if resolved.PageSize != DefaultSYBPageSize || resolved.MaxMatches != DefaultSYBMaxMatches {
		t.Fatalf("分页默认值不对: %+v", resolved)
	}
	if resolved.OcrMaxAttempts != DefaultSYBOcrMaxAttempts {
		t.Fatalf("OCR 重试次数默认值不对: %d", resolved.OcrMaxAttempts)
	}
	if resolved.Username != "" || resolved.Password != "" {
		t.Fatal("Resolved 不得给账号密码编造默认值")
	}
	// ocr_url 留空是合法配置（降级到手工输入），不能被填上默认值。
	if resolved.OcrURL != "" {
		t.Fatalf("空 OcrURL 不应被填充: %q", resolved.OcrURL)
	}
}

func TestSYBResolvedNormalisesBaseURLTrailingSlash(t *testing.T) {
	if got := (SYB{BaseURL: " https://example.com/ "}).Resolved().BaseURL; got != "https://example.com" {
		t.Fatalf("BaseURL 规范化不对: %q", got)
	}
}

func TestSYBHasCredentialsRequiresBothFields(t *testing.T) {
	for _, c := range []struct {
		name string
		syb  SYB
		want bool
	}{
		{"都有", SYB{Username: "a", Password: "b"}, true},
		{"缺密码", SYB{Username: "a"}, false},
		{"缺账号", SYB{Password: "b"}, false},
		{"账号只有空白", SYB{Username: "   ", Password: "b"}, false},
		{"都没有", SYB{}, false},
	} {
		if got := c.syb.HasCredentials(); got != c.want {
			t.Fatalf("%s: 期望 %v，实际 %v", c.name, c.want, got)
		}
	}
}