package openai

import (
	"context"
	"errors"
	"net/http"
	"net/http/httptest"
	"strings"
	"testing"

	"github.com/gin-gonic/gin"
	"github.com/router-for-me/CLIProxyAPI/v6/internal/registry"
	"github.com/router-for-me/CLIProxyAPI/v6/sdk/api/handlers"
	coreauth "github.com/router-for-me/CLIProxyAPI/v6/sdk/cliproxy/auth"
	coreexecutor "github.com/router-for-me/CLIProxyAPI/v6/sdk/cliproxy/executor"
	sdkconfig "github.com/router-for-me/CLIProxyAPI/v6/sdk/config"
)

type compactCaptureExecutor struct {
	alt          string
	sourceFormat string
	calls        int
}

func (e *compactCaptureExecutor) Identifier() string { return "test-provider" }

func (e *compactCaptureExecutor) Execute(ctx context.Context, auth *coreauth.Auth, req coreexecutor.Request, opts coreexecutor.Options) (coreexecutor.Response, error) {
	e.calls++
	e.alt = opts.Alt
	e.sourceFormat = opts.SourceFormat.String()
	return coreexecutor.Response{Payload: []byte(`{"ok":true}`)}, nil
}

func (e *compactCaptureExecutor) ExecuteStream(context.Context, *coreauth.Auth, coreexecutor.Request, coreexecutor.Options) (<-chan coreexecutor.StreamChunk, error) {
	return nil, errors.New("not implemented")
}

func (e *compactCaptureExecutor) Refresh(ctx context.Context, auth *coreauth.Auth) (*coreauth.Auth, error) {
	return auth, nil
}

func (e *compactCaptureExecutor) CountTokens(context.Context, *coreauth.Auth, coreexecutor.Request, coreexecutor.Options) (coreexecutor.Response, error) {
	return coreexecutor.Response{}, errors.New("not implemented")
}

func (e *compactCaptureExecutor) HttpRequest(context.Context, *coreauth.Auth, *http.Request) (*http.Response, error) {
	return nil, errors.New("not implemented")
}

func TestOpenAIResponsesCompactRejectsStream(t *testing.T) {
	gin.SetMode(gin.TestMode)
	executor := &compactCaptureExecutor{}
	manager := coreauth.NewManager(nil, nil, nil)
	manager.RegisterExecutor(executor)

	auth := &coreauth.Auth{ID: "auth1", Provider: executor.Identifier(), Status: coreauth.StatusActive}
	if _, err := manager.Register(context.Background(), auth); err != nil {
		t.Fatalf("Register auth: %v", err)
	}
	registry.GetGlobalRegistry().RegisterClient(auth.ID, auth.Provider, []*registry.ModelInfo{{ID: "test-model"}})
	t.Cleanup(func() {
		registry.GetGlobalRegistry().UnregisterClient(auth.ID)
	})

	base := handlers.NewBaseAPIHandlers(&sdkconfig.SDKConfig{}, manager)
	h := NewOpenAIResponsesAPIHandler(base)
	router := gin.New()
	router.POST("/v1/responses/compact", h.Compact)

	req := httptest.NewRequest(http.MethodPost, "/v1/responses/compact", strings.NewReader(`{"model":"test-model","stream":true}`))
	req.Header.Set("Content-Type", "application/json")
	resp := httptest.NewRecorder()
	router.ServeHTTP(resp, req)

	if resp.Code != http.StatusBadRequest {
		t.Fatalf("status = %d, want %d", resp.Code, http.StatusBadRequest)
	}
	if executor.calls != 0 {
		t.Fatalf("executor calls = %d, want 0", executor.calls)
	}
}

func TestOpenAIResponsesCompactExecute(t *testing.T) {
	gin.SetMode(gin.TestMode)
	executor := &compactCaptureExecutor{}
	manager := coreauth.NewManager(nil, nil, nil)
	manager.RegisterExecutor(executor)

	auth := &coreauth.Auth{ID: "auth2", Provider: executor.Identifier(), Status: coreauth.StatusActive}
	if _, err := manager.Register(context.Background(), auth); err != nil {
		t.Fatalf("Register auth: %v", err)
	}
	registry.GetGlobalRegistry().RegisterClient(auth.ID, auth.Provider, []*registry.ModelInfo{{ID: "test-model"}})
	t.Cleanup(func() {
		registry.GetGlobalRegistry().UnregisterClient(auth.ID)
	})

	base := handlers.NewBaseAPIHandlers(&sdkconfig.SDKConfig{}, manager)
	h := NewOpenAIResponsesAPIHandler(base)
	router := gin.New()
	router.POST("/v1/responses/compact", h.Compact)

	req := httptest.NewRequest(http.MethodPost, "/v1/responses/compact", strings.NewReader(`{"model":"test-model","input":"hello"}`))
	req.Header.Set("Content-Type", "application/json")
	resp := httptest.NewRecorder()
	router.ServeHTTP(resp, req)

	if resp.Code != http.StatusOK {
		t.Fatalf("status = %d, want %d", resp.Code, http.StatusOK)
	}
	if executor.alt != "responses/compact" {
		t.Fatalf("alt = %q, want %q", executor.alt, "responses/compact")
	}
	if executor.sourceFormat != "openai-response" {
		t.Fatalf("source format = %q, want %q", executor.sourceFormat, "openai-response")
	}
	if strings.TrimSpace(resp.Body.String()) != `{"ok":true}` {
		t.Fatalf("body = %s", resp.Body.String())
	}
}