package specs

import (
	"testing"

	"git.zeroonesoft.cn/golib/xiaomihome/miot"
)

// buildTestSpec creates a mock SPEC instance for testing.
func buildTestSpec() *miot.MIoTSpecInstance {
	return &miot.MIoTSpecInstance{
		URN:              "urn:miot-spec-v2:device:air-conditioner:0000A004:xiaomi-c1:1",
		Type:             "air-conditioner",
		Description:      "Xiaomi Air Conditioner",
		DescriptionTrans: "小米空调",
		Services: []*miot.MIoTSpecService{
			{
				IID:         1,
				Type:        "device-information",
				Description: "Device Information",
				Properties: []*miot.MIoTSpecProperty{
					{SIID: 1, PIID: 1, Type: "", Format: "string", Access: []string{"read"}, Description: "manufacturer", DescriptionTrans: "制造商"},
				},
			},
			{
				IID:         2,
				Type:        "air-conditioner",
				Description: "Air Conditioner",
				Properties: []*miot.MIoTSpecProperty{
					{SIID: 2, PIID: 1, Type: "on", Format: "bool", Access: []string{"read", "write", "notify"}, Description: "Power", DescriptionTrans: "开关"},
					{SIID: 2, PIID: 2, Type: "mode", Format: "uint8", Access: []string{"read", "write", "notify"}, Description: "Mode", DescriptionTrans: "模式"},
					{SIID: 2, PIID: 3, Type: "target-temperature", Format: "float", Access: []string{"read", "write", "notify"}, Description: "Target Temp", DescriptionTrans: "目标温度"},
					{SIID: 2, PIID: 4, Type: "temperature", Format: "float", Access: []string{"read"}, Description: "Current Temp", DescriptionTrans: "当前温度"},
					{SIID: 2, PIID: 5, Type: "fan-level", Format: "uint8", Access: []string{"read", "write", "notify"}, Description: "Fan Speed", DescriptionTrans: "风速"},
					{SIID: 2, PIID: 6, Type: "swing-mode", Format: "uint8", Access: []string{"read", "write", "notify"}, Description: "Swing", DescriptionTrans: "摆风"},
				},
				Actions: []*miot.MIoTSpecAction{
					{SIID: 2, AIID: 1, Type: "toggle", Description: "Toggle Power"},
				},
			},
		},
	}
}

func TestNewPropertyResolver(t *testing.T) {
	t.Run("valid spec", func(t *testing.T) {
		spec := buildTestSpec()
		r := NewPropertyResolver(spec)
		if r == nil {
			t.Fatal("resolver should not be nil")
		}
		if r.spec != spec {
			t.Error("spec reference mismatch")
		}
	})

	t.Run("nil spec", func(t *testing.T) {
		r := NewPropertyResolver(nil)
		if r != nil {
			t.Error("resolver should be nil for nil spec")
		}
	})
}

func TestFindByType(t *testing.T) {
	r := NewPropertyResolver(buildTestSpec())

	tests := []struct {
		name     string
		propType string
		wantSIID int
		wantPIID int
		wantOK   bool
	}{
		{"on", "on", 2, 1, true},
		{"mode", "mode", 2, 2, true},
		{"target-temperature", "target-temperature", 2, 3, true},
		{"temperature", "temperature", 2, 4, true},
		{"fan-level", "fan-level", 2, 5, true},
		{"swing-mode", "swing-mode", 2, 6, true},
		{"nonexistent", "brightness", 0, 0, false},
	}

	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			siid, piid, ok := r.FindByType(tt.propType)
			if ok != tt.wantOK {
				t.Errorf("ok = %v, want %v", ok, tt.wantOK)
			}
			if siid != tt.wantSIID {
				t.Errorf("siid = %d, want %d", siid, tt.wantSIID)
			}
			if piid != tt.wantPIID {
				t.Errorf("piid = %d, want %d", piid, tt.wantPIID)
			}
		})
	}
}

func TestFindByFormat(t *testing.T) {
	r := NewPropertyResolver(buildTestSpec())

	tests := []struct {
		name     string
		format   string
		siid     int
		wantPIID int
		wantOK   bool
	}{
		{"bool in siid 2", "bool", 2, 1, true},
		{"float in siid 2 (first match)", "float", 2, 3, true},
		{"string in siid 1", "string", 1, 1, true},
		{"nonexistent format", "int16", 2, 0, false},
	}

	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			piid, ok := r.FindByFormat(tt.format, tt.siid)
			if ok != tt.wantOK {
				t.Errorf("ok = %v, want %v", ok, tt.wantOK)
			}
			if piid != tt.wantPIID {
				t.Errorf("piid = %d, want %d", piid, tt.wantPIID)
			}
		})
	}
}

func TestFindByDescription(t *testing.T) {
	r := NewPropertyResolver(buildTestSpec())

	tests := []struct {
		name     string
		desc     string
		wantSIID int
		wantPIID int
		wantOK   bool
	}{
		{"by translated desc", "开关", 2, 1, true},
		{"by raw desc", "Power", 2, 1, true},
		{"nonexistent desc", "亮度", 0, 0, false},
	}

	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			siid, piid, ok := r.FindByDescription(tt.desc)
			if ok != tt.wantOK {
				t.Errorf("ok = %v, want %v", ok, tt.wantOK)
			}
			if siid != tt.wantSIID {
				t.Errorf("siid = %d, want %d", siid, tt.wantSIID)
			}
			if piid != tt.wantPIID {
				t.Errorf("piid = %d, want %d", piid, tt.wantPIID)
			}
		})
	}
}

func TestFindAction(t *testing.T) {
	r := NewPropertyResolver(buildTestSpec())

	t.Run("existing action", func(t *testing.T) {
		aiid, ok := r.FindAction(2, "toggle")
		if !ok {
			t.Error("toggle action should be found")
		}
		if aiid != 1 {
			t.Errorf("aiid = %d, want 1", aiid)
		}
	})

	t.Run("nonexistent action", func(t *testing.T) {
		_, ok := r.FindAction(2, "nonexistent")
		if ok {
			t.Error("nonexistent action should not be found")
		}
	})

	t.Run("nonexistent service", func(t *testing.T) {
		_, ok := r.FindAction(99, "toggle")
		if ok {
			t.Error("action in nonexistent service should not be found")
		}
	})
}

func TestGetAllProperties(t *testing.T) {
	r := NewPropertyResolver(buildTestSpec())

	t.Run("siid 2 has 6 properties", func(t *testing.T) {
		props := r.GetAllProperties(2)
		if len(props) != 6 {
			t.Errorf("len = %d, want 6", len(props))
		}
	})

	t.Run("siid 1 has 1 property", func(t *testing.T) {
		props := r.GetAllProperties(1)
		if len(props) != 1 {
			t.Errorf("len = %d, want 1", len(props))
		}
	})

	t.Run("nonexistent siid", func(t *testing.T) {
		props := r.GetAllProperties(99)
		if len(props) != 0 {
			t.Errorf("len = %d, want 0", len(props))
		}
	})
}

func TestGetProperty(t *testing.T) {
	r := NewPropertyResolver(buildTestSpec())

	t.Run("existing property", func(t *testing.T) {
		prop := r.GetProperty(2, 3)
		if prop == nil {
			t.Fatal("property should be found")
		}
		if prop.Type != "target-temperature" {
			t.Errorf("Type = %q", prop.Type)
		}
	})

	t.Run("nonexistent property", func(t *testing.T) {
		prop := r.GetProperty(2, 99)
		if prop != nil {
			t.Error("property should be nil")
		}
	})
}

func TestSpec(t *testing.T) {
	spec := buildTestSpec()
	r := NewPropertyResolver(spec)
	if r.Spec() != spec {
		t.Error("Spec() should return the original spec")
	}
}