package executor

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

	"github.com/router-for-me/CLIProxyAPI/v7/internal/config"
	_ "github.com/router-for-me/CLIProxyAPI/v7/internal/translator"
	cliproxyauth "github.com/router-for-me/CLIProxyAPI/v7/sdk/cliproxy/auth"
	cliproxyexecutor "github.com/router-for-me/CLIProxyAPI/v7/sdk/cliproxy/executor"
	sdktranslator "github.com/router-for-me/CLIProxyAPI/v7/sdk/translator"
	"github.com/tidwall/gjson"
)

func TestXAIExecutorExecuteShapesResponsesRequest(t *testing.T) {
	var gotPath string
	var gotAuth string
	var gotGrokConvID string
	var gotOriginator string
	var gotAccountID string
	var gotBody []byte

	server := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		gotPath = r.URL.Path
		gotAuth = r.Header.Get("Authorization")
		gotGrokConvID = r.Header.Get("x-grok-conv-id")
		gotOriginator = r.Header.Get("Originator")
		gotAccountID = r.Header.Get("Chatgpt-Account-Id")
		var errRead error
		gotBody, errRead = io.ReadAll(r.Body)
		if errRead != nil {
			t.Fatalf("read body: %v", errRead)
		}
		w.Header().Set("Content-Type", "text/event-stream")
		_, _ = w.Write([]byte("data: {\"type\":\"response.completed\",\"response\":{\"id\":\"resp_1\",\"object\":\"response\",\"created_at\":0,\"status\":\"completed\",\"model\":\"grok-4.3\",\"output\":[{\"type\":\"message\",\"role\":\"assistant\",\"content\":[{\"type\":\"output_text\",\"text\":\"ok\"}]}],\"usage\":{\"input_tokens\":1,\"output_tokens\":1,\"total_tokens\":2}}}\n\n"))
	}))
	defer server.Close()

	exec := NewXAIExecutor(&config.Config{})
	auth := &cliproxyauth.Auth{
		ID:       "xai-auth",
		Provider: "xai",
		Attributes: map[string]string{
			"base_url":  server.URL,
			"auth_kind": "oauth",
		},
		Metadata: map[string]any{
			"access_token": "xai-token",
			"email":        "user@example.com",
		},
	}

	_, err := exec.Execute(context.Background(), auth, cliproxyexecutor.Request{
		Model:   "grok-4.3",
		Payload: []byte(`{"model":"grok-4.3","input":"hello","include":["reasoning.encrypted_content"],"reasoning":{"effort":"high"}}`),
	}, cliproxyexecutor.Options{
		SourceFormat: sdktranslator.FormatOpenAIResponse,
		Stream:       false,
		Metadata: map[string]any{
			cliproxyexecutor.ExecutionSessionMetadataKey: "conv-xai-1",
		},
	})
	if err != nil {
		t.Fatalf("Execute() error = %v", err)
	}

	if gotPath != "/responses" {
		t.Fatalf("path = %q, want /responses", gotPath)
	}
	if gotAuth != "Bearer xai-token" {
		t.Fatalf("Authorization = %q, want Bearer xai-token", gotAuth)
	}
	if gotGrokConvID != "conv-xai-1" {
		t.Fatalf("x-grok-conv-id = %q, want conv-xai-1", gotGrokConvID)
	}
	if gotOriginator != "" {
		t.Fatalf("Originator = %q, want empty", gotOriginator)
	}
	if gotAccountID != "" {
		t.Fatalf("Chatgpt-Account-Id = %q, want empty", gotAccountID)
	}
	if gjson.GetBytes(gotBody, "prompt_cache_key").String() != "conv-xai-1" {
		t.Fatalf("prompt_cache_key missing from body: %s", string(gotBody))
	}
	if !gjson.GetBytes(gotBody, "stream").Bool() {
		t.Fatalf("stream = false, want true; body=%s", string(gotBody))
	}
	if gjson.GetBytes(gotBody, "reasoning.effort").String() != "high" {
		t.Fatalf("reasoning.effort = %q, want high; body=%s", gjson.GetBytes(gotBody, "reasoning.effort").String(), string(gotBody))
	}
	for _, include := range gjson.GetBytes(gotBody, "include").Array() {
		if include.String() == "reasoning.encrypted_content" {
			t.Fatalf("xai request must not ask for encrypted reasoning content: %s", string(gotBody))
		}
	}
}

func TestXAIExecutorOmitsUnsupportedReasoningEffort(t *testing.T) {
	var gotBody []byte
	server := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		var errRead error
		gotBody, errRead = io.ReadAll(r.Body)
		if errRead != nil {
			t.Fatalf("read body: %v", errRead)
		}
		w.Header().Set("Content-Type", "text/event-stream")
		_, _ = w.Write([]byte("data: {\"type\":\"response.completed\",\"response\":{\"id\":\"resp_1\",\"object\":\"response\",\"created_at\":0,\"status\":\"completed\",\"model\":\"grok-4\",\"output\":[{\"type\":\"message\",\"role\":\"assistant\",\"content\":[{\"type\":\"output_text\",\"text\":\"ok\"}]}]}}\n\n"))
	}))
	defer server.Close()

	exec := NewXAIExecutor(&config.Config{})
	auth := &cliproxyauth.Auth{
		Provider: "xai",
		Attributes: map[string]string{
			"base_url":  server.URL,
			"auth_kind": "oauth",
		},
		Metadata: map[string]any{"access_token": "xai-token"},
	}

	_, err := exec.Execute(context.Background(), auth, cliproxyexecutor.Request{
		Model:   "grok-4",
		Payload: []byte(`{"model":"grok-4","input":"hello","reasoning":{"effort":"high"}}`),
	}, cliproxyexecutor.Options{
		SourceFormat: sdktranslator.FormatOpenAIResponse,
		Stream:       false,
	})
	if err != nil {
		t.Fatalf("Execute() error = %v", err)
	}

	if gjson.GetBytes(gotBody, "reasoning").Exists() {
		t.Fatalf("unsupported xAI model must omit reasoning key: %s", string(gotBody))
	}
}

func TestXAIExecutorExecuteImagesUsesImagesEndpoint(t *testing.T) {
	var gotPath string
	var gotAuth string
	var gotAccept string
	var gotBody []byte
	server := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		gotPath = r.URL.Path
		gotAuth = r.Header.Get("Authorization")
		gotAccept = r.Header.Get("Accept")
		var errRead error
		gotBody, errRead = io.ReadAll(r.Body)
		if errRead != nil {
			t.Fatalf("read body: %v", errRead)
		}
		w.Header().Set("Content-Type", "application/json")
		_, _ = w.Write([]byte(`{"created":123,"data":[{"b64_json":"AA=="}]}`))
	}))
	defer server.Close()

	exec := NewXAIExecutor(&config.Config{})
	auth := &cliproxyauth.Auth{
		Provider: "xai",
		Attributes: map[string]string{
			"base_url":  server.URL,
			"auth_kind": "oauth",
		},
		Metadata: map[string]any{"access_token": "xai-token"},
	}

	resp, err := exec.Execute(context.Background(), auth, cliproxyexecutor.Request{
		Model:   "grok-imagine-image",
		Payload: []byte(`{"model":"grok-imagine-image","prompt":"draw"}`),
	}, cliproxyexecutor.Options{
		SourceFormat: sdktranslator.FromString("openai-image"),
		Metadata: map[string]any{
			cliproxyexecutor.RequestPathMetadataKey: "/v1/images/generations",
		},
	})
	if err != nil {
		t.Fatalf("Execute() error = %v", err)
	}

	if gotPath != "/images/generations" {
		t.Fatalf("path = %q, want /images/generations", gotPath)
	}
	if gotAuth != "Bearer xai-token" {
		t.Fatalf("Authorization = %q, want Bearer xai-token", gotAuth)
	}
	if gotAccept != "application/json" {
		t.Fatalf("Accept = %q, want application/json", gotAccept)
	}
	if string(gotBody) != `{"model":"grok-imagine-image","prompt":"draw"}` {
		t.Fatalf("body = %s", string(gotBody))
	}
	if gjson.GetBytes(resp.Payload, "data.0.b64_json").String() != "AA==" {
		t.Fatalf("payload = %s", string(resp.Payload))
	}
}

func TestXAIExecutorExecuteImagesUsesEditsEndpoint(t *testing.T) {
	var gotPath string
	server := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		gotPath = r.URL.Path
		w.Header().Set("Content-Type", "application/json")
		_, _ = w.Write([]byte(`{"created":123,"data":[{"url":"https://x.ai/image.png"}]}`))
	}))
	defer server.Close()

	exec := NewXAIExecutor(&config.Config{})
	auth := &cliproxyauth.Auth{
		Provider:   "xai",
		Attributes: map[string]string{"base_url": server.URL},
		Metadata:   map[string]any{"access_token": "xai-token"},
	}

	_, err := exec.Execute(context.Background(), auth, cliproxyexecutor.Request{
		Model:   "grok-imagine-image",
		Payload: []byte(`{"model":"grok-imagine-image","prompt":"edit","image":{"type":"image_url","url":"https://example.com/a.png"}}`),
	}, cliproxyexecutor.Options{
		SourceFormat: sdktranslator.FromString("openai-image"),
		Metadata: map[string]any{
			cliproxyexecutor.RequestPathMetadataKey: "/v1/images/edits",
		},
	})
	if err != nil {
		t.Fatalf("Execute() error = %v", err)
	}

	if gotPath != "/images/edits" {
		t.Fatalf("path = %q, want /images/edits", gotPath)
	}
}