// Package miot provides white-box tests for miot_cloud.go cloud API client.
package miot

import (
	"encoding/json"
	"net/http"
	"net/http/httptest"
	"testing"
)

func TestToFloat64(t *testing.T) {
	tests := []struct {
		input interface{}
		want  float64
	}{
		{float64(3.14), 3.14},
		{int(5), 5.0},
		{int64(10), 10.0},
		{"123", 123.0},
		{nil, 0.0},
		{true, 0.0},
	}
	for _, tt := range tests {
		got := toFloat64(tt.input)
		if got != tt.want {
			t.Errorf("toFloat64(%v) = %f, want %f", tt.input, got, tt.want)
		}
	}
}

func TestToSlice(t *testing.T) {
	if s := toSlice(nil); s != nil {
		t.Errorf("toSlice(nil) = %v, want nil", s)
	}
	if s := toSlice([]interface{}{"a", "b"}); len(s) != 2 {
		t.Errorf("toSlice len = %d, want 2", len(s))
	}
	if s := toSlice("not_a_slice"); s != nil {
		t.Errorf("toSlice(string) = %v, want nil", s)
	}
}

func TestToStringSlice(t *testing.T) {
	s := toStringSlice([]string{"a", "b", "c"})
	if len(s) != 3 || s[0] != "a" {
		t.Errorf("toStringSlice([]string) = %v", s)
	}
	s = toStringSlice([]interface{}{"x", "y"})
	if len(s) != 2 || s[1] != "y" {
		t.Errorf("toStringSlice([]interface{}) = %v", s)
	}
	s = toStringSlice([]interface{}{"str", 42})
	if s[1] != "42" {
		t.Errorf("toStringSlice with int = %v, want '42'", s)
	}
	s = toStringSlice(nil)
	if s != nil {
		t.Errorf("toStringSlice(nil) should be nil, got %v", s)
	}
}

func TestIsUnsupportedModel(t *testing.T) {
	if !isUnsupportedModel("chuangmi.ir.v2") {
		t.Error("chuangmi.ir.v2 should be unsupported")
	}
	if isUnsupportedModel("lumi.plug.v1") {
		t.Error("lumi.plug.v1 should be supported")
	}
	if isUnsupportedModel("") {
		t.Error("empty string should be supported")
	}
}

func TestContainsString(t *testing.T) {
	slice := []string{"a", "b", "c"}
	if !containsString(slice, "b") {
		t.Error("should contain 'b'")
	}
	if containsString(slice, "z") {
		t.Error("should not contain 'z'")
	}
	if containsString(nil, "a") {
		t.Error("nil slice should not contain anything")
	}
}

func TestNewMIoTHttpClient_Basic(t *testing.T) {
	client, err := NewMIoTHttpClient("cn", "client_id_123", "access_token_abc")
	if err != nil {
		t.Fatalf("NewMIoTHttpClient failed: %v", err)
	}
	if client == nil {
		t.Fatal("client should not be nil")
	}
	client.Close()
}

func TestNewMIoTHttpClient_NonCN(t *testing.T) {
	client, err := NewMIoTHttpClient("us", "id", "token")
	if err != nil {
		t.Fatalf("NewMIoTHttpClient for us failed: %v", err)
	}
	client.Close()
}

func TestNewMIoTOauthClient_Basic(t *testing.T) {
	oa := NewMIoTOauthClient(OAUTH2_CLIENT_ID, "http://localhost/callback", "cn", "test-uuid")
	if oa == nil {
		t.Fatal("NewMIoTOauthClient returned nil")
	}
	s := oa.State()
	if s == "" {
		t.Error("State should not be empty")
	}
	oa.Close()
}

func TestGenAuthURL(t *testing.T) {
	oa := NewMIoTOauthClient(OAUTH2_CLIENT_ID, "http://localhost/callback", "cn", "test-uuid")
	defer oa.Close()

	url := oa.GenAuthURL("", "", nil, false)
	if url == "" {
		t.Error("GenAuthURL returned empty string")
	}

	url2 := oa.GenAuthURL("http://custom/callback", "mystate", []string{"scope1", "scope2"}, true)
	if url2 == "" {
		t.Error("GenAuthURL with params returned empty string")
	}
}

func TestUpdateHTTPHeader_CN(t *testing.T) {
	client, err := NewMIoTHttpClient("cn", "id1", "tok1")
	if err != nil {
		t.Fatal(err)
	}
	defer client.Close()
	client.UpdateHTTPHeader("cn", "new_id", "new_token")
}

func TestUpdateHTTPHeader_NonCN(t *testing.T) {
	client, err := NewMIoTHttpClient("us", "id1", "tok1")
	if err != nil {
		t.Fatal(err)
	}
	defer client.Close()
	client.UpdateHTTPHeader("de", "id2", "tok2")
}

func TestMihomeAPIGet_Success(t *testing.T) {
	server := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		if r.Method != http.MethodGet {
			t.Errorf("expected GET, got %s", r.Method)
		}
		resp := map[string]interface{}{"code": float64(0), "message": "ok", "result": map[string]interface{}{"data": "test"}}
		json.NewEncoder(w).Encode(resp)
	}))
	defer server.Close()
	_ = server
}

func TestPropParam_Struct(t *testing.T) {
	p := PropParam{DID: "did1", Siid: 2, Piid: 1, Value: "on"}
	if p.DID != "did1" || p.Siid != 2 || p.Piid != 1 {
		t.Error("PropParam fields wrong")
	}
}

func TestPropResult_Struct(t *testing.T) {
	r := PropResult{DID: "did1", Siid: 2, Piid: 1, Code: 0, Value: "ok"}
	if r.Code != 0 {
		t.Errorf("PropResult Code = %d, want 0", r.Code)
	}
}

func TestMIoTHttpClient_Close(t *testing.T) {
	client, err := NewMIoTHttpClient("cn", "id", "token")
	if err != nil {
		t.Fatal(err)
	}
	client.Close()
	client.Close()
}

func TestTokenExpiresTSRatio(t *testing.T) {
	if TokenExpiresTSRatio <= 0 || TokenExpiresTSRatio >= 1.0 {
		t.Errorf("TokenExpiresTSRatio = %f, should be between 0 and 1", TokenExpiresTSRatio)
	}
}