package controller

import (
	"context"
	"net/http"
	"net/http/httptest"
	"reflect"
	"testing"

	"ezops/model"

	"github.com/glebarez/sqlite"
	"gorm.io/gorm"
)

func TestParseLLMModelList(t *testing.T) {
	raw := []byte(`{"data":[{"id":"model-b"},{"id":"model-a"},{"id":"model-b"}],"models":[{"name":"model-c"}]}`)
	got, err := parseLLMModelList(raw)
	if err != nil {
		t.Fatalf("parseLLMModelList() error = %v", err)
	}
	want := []string{"model-a", "model-b", "model-c"}
	if !reflect.DeepEqual(got, want) {
		t.Fatalf("parseLLMModelList() = %#v, want %#v", got, want)
	}
}

func TestRequestLLMModelListForOpenAICompatibleGateway(t *testing.T) {
	server := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		if r.URL.Path != "/v1/models" {
			t.Errorf("request path = %q, want /v1/models", r.URL.Path)
		}
		if got := r.Header.Get("Authorization"); got != "Bearer test-key" {
			t.Errorf("Authorization = %q", got)
		}
		w.Header().Set("Content-Type", "application/json")
		_, _ = w.Write([]byte(`{"data":[{"id":"gpt-test"}]}`))
	}))
	defer server.Close()

	models, err := requestLLMModelList(context.Background(), "new-api", server.URL+"/v1", "test-key")
	if err != nil {
		t.Fatalf("requestLLMModelList() error = %v", err)
	}
	if !reflect.DeepEqual(models, []string{"gpt-test"}) {
		t.Fatalf("requestLLMModelList() = %#v", models)
	}
}

func TestRequestLLMModelListForAnthropic(t *testing.T) {
	server := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		if r.URL.Path != "/v1/models" {
			t.Errorf("request path = %q, want /v1/models", r.URL.Path)
		}
		if got := r.Header.Get("x-api-key"); got != "anthropic-key" {
			t.Errorf("x-api-key = %q", got)
		}
		if got := r.Header.Get("anthropic-version"); got != "2023-06-01" {
			t.Errorf("anthropic-version = %q", got)
		}
		w.Header().Set("Content-Type", "application/json")
		_, _ = w.Write([]byte(`{"data":[{"id":"claude-test"}]}`))
	}))
	defer server.Close()

	models, err := requestLLMModelList(context.Background(), "anthropic", server.URL, "anthropic-key")
	if err != nil {
		t.Fatalf("requestLLMModelList() error = %v", err)
	}
	if !reflect.DeepEqual(models, []string{"claude-test"}) {
		t.Fatalf("requestLLMModelList() = %#v", models)
	}
}

func TestResolveModelListCredentialDoesNotReuseKeyAcrossProviders(t *testing.T) {
	db, err := gorm.Open(sqlite.Open(":memory:"), &gorm.Config{})
	if err != nil {
		t.Fatalf("open database: %v", err)
	}
	if err := db.AutoMigrate(&model.LLMConfig{}); err != nil {
		t.Fatalf("migrate database: %v", err)
	}
	if err := db.Create(&model.LLMConfig{Provider: "deepseek", APIKey: "deepseek-secret"}).Error; err != nil {
		t.Fatalf("create config: %v", err)
	}

	handler := NewLLMHandler(db)
	_, _, errMsg := handler.resolveModelListCredential(model.SaveLLMConfigRequest{
		Provider: "new-api",
		Endpoint: "https://new-api.example.com/v1",
		APIKey:   "****cret",
	})
	if errMsg != "提供商或 Endpoint 已变化，请重新填写 API Key" {
		t.Fatalf("provider mismatch error = %q", errMsg)
	}
}