// internal/collectors/provider_mapper_test.go
package collectors

import (
	"testing"
)

func TestMapOpenRouterID(t *testing.T) {
	tests := []struct {
		name        string
		rawID       string
		wantErr     bool
		wantProvID  string
		wantProvCN  string
		wantModel   string
		wantFree    bool
		wantCountry string
	}{
		{
			name:        "OpenAI GPT-4o",
			rawID:       "openai/gpt-4o",
			wantProvID:  "openai",
			wantProvCN:  "OpenAI",
			wantModel:   "gpt-4o",
			wantFree:    false,
			wantCountry: "US",
		},
		{
			name:        "Anthropic Claude free",
			rawID:       "anthropic/claude-3.5-sonnet:free",
			wantProvID:  "anthropic",
			wantProvCN:  "Anthropic",
			wantModel:   "claude-3.5-sonnet",
			wantFree:    true,
			wantCountry: "US",
		},
		{
			name:        "DeepSeek V3",
			rawID:       "deepseek/deepseek-v3",
			wantProvID:  "deepseek",
			wantProvCN:  "深度求索",
			wantModel:   "deepseek-v3",
			wantFree:    false,
			wantCountry: "CN",
		},
		{
			name:        "Moonshot Kimi",
			rawID:       "moonshotai/kimi-k2",
			wantProvID:  "moonshot",
			wantProvCN:  "月之暗面",
			wantModel:   "kimi-k2",
			wantFree:    false,
			wantCountry: "CN",
		},
		{
			name:        "Unknown provider fallback",
			rawID:       "some-new-ai/model-x",
			wantProvID:  "some-new-ai",
			wantProvCN:  "some-new-ai",
			wantModel:   "model-x",
			wantFree:    false,
			wantCountry: "unknown",
		},
		{
			name:    "Empty ID",
			rawID:   "",
			wantErr: true,
		},
		{
			name:    "Invalid format no slash",
			rawID:   "invalid-id",
			wantErr: true,
		},
	}

	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			got, err := MapOpenRouterID(tt.rawID)
			if (err != nil) != tt.wantErr {
				t.Errorf("MapOpenRouterID(%q) error = %v, wantErr %v", tt.rawID, err, tt.wantErr)
				return
			}
			if tt.wantErr {
				return
			}
			if got.Provider.ID != tt.wantProvID {
				t.Errorf("Provider.ID = %q, want %q", got.Provider.ID, tt.wantProvID)
			}
			if got.Provider.NameCN != tt.wantProvCN {
				t.Errorf("Provider.NameCN = %q, want %q", got.Provider.NameCN, tt.wantProvCN)
			}
			if got.ModelName != tt.wantModel {
				t.Errorf("ModelName = %q, want %q", got.ModelName, tt.wantModel)
			}
			if got.IsFree != tt.wantFree {
				t.Errorf("IsFree = %v, want %v", got.IsFree, tt.wantFree)
			}
			if got.Provider.Country != tt.wantCountry {
				t.Errorf("Country = %q, want %q", got.Provider.Country, tt.wantCountry)
			}
		})
	}
}

func TestProviderMapCompleteness(t *testing.T) {
	// 验证所有预定义的厂商映射
	requiredProviders := []string{
		"openai", "anthropic", "google", "meta", "xai",
		"deepseek", "qwen", "moonshot", "zhipu", "bytedance",
		"baidu", "tencent", "alibaba", "mistral", "cohere",
		"ai21", "perplexity", "nvidia", "microsoft", "openrouter",
	}

	for _, id := range requiredProviders {
		_, ok := providerNameMap[id]
		if !ok {
			t.Errorf("Required provider %q not found in providerNameMap", id)
		}
	}

	// 验证总数 >= 20
	if ProviderCount() < 20 {
		t.Errorf("ProviderCount() = %d, want >= 20", ProviderCount())
	}
}

func TestRegisterProvider(t *testing.T) {
	// 注册新厂商
	RegisterProvider("test-corp", ProviderInfo{
		ID:      "test-corp",
		Name:    "Test Corp",
		NameCN:  "测试公司",
		Country: "CN",
	})

	got, err := MapOpenRouterID("test-corp/model-1")
	if err != nil {
		t.Fatalf("MapOpenRouterID after RegisterProvider failed: %v", err)
	}
	if got.Provider.NameCN != "测试公司" {
		t.Errorf("After RegisterProvider, NameCN = %q, want %q", got.Provider.NameCN, "测试公司")
	}
}

func TestGetAllProviderNames(t *testing.T) {
	names := GetAllProviderNames()
	if len(names) == 0 {
		t.Error("GetAllProviderNames() returned empty slice")
	}
	// 验证包含 openai
	found := false
	for _, n := range names {
		if n == "openai" {
			found = true
			break
		}
	}
	if !found {
		t.Error("GetAllProviderNames() missing 'openai'")
	}
}

func BenchmarkMapOpenRouterID(b *testing.B) {
	for i := 0; i < b.N; i++ {
		_, _ = MapOpenRouterID("openai/gpt-4o")
	}
}