package vision

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

	"git.yeij.top/AskaEth/Cyrene_v2/internal/config"
)

func TestOpenAICompatibleAdapter_Describe(t *testing.T) {
	t.Parallel()
	srv := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		if r.URL.Path != "/chat/completions" {
			t.Errorf("path = %s, want /chat/completions", r.URL.Path)
		}
		var body map[string]any
		if err := json.NewDecoder(r.Body).Decode(&body); err != nil {
			t.Fatalf("decode body: %v", err)
		}
		msgs, _ := body["messages"].([]any)
		if len(msgs) != 1 {
			t.Fatalf("messages = %d, want 1", len(msgs))
		}
		content, _ := msgs[0].(map[string]any)["content"].([]any)
		if len(content) != 2 {
			t.Fatalf("content parts = %d, want 2", len(content))
		}
		w.Header().Set("Content-Type", "application/json")
		_, _ = io.WriteString(w, `{"choices":[{"message":{"content":"a red car"}}]}`)
	}))
	defer srv.Close()

	ad := NewOpenAICompatible(config.LLMConfig{BaseURL: srv.URL, Model: "vision-"})
	text, err := ad.Describe(context.Background(), ImageRef{Source: SourceBase64, Data: "aGVsbG8="}, "")
	if err != nil {
		t.Fatalf("Describe error: %v", err)
	}
	if text != "a red car" {
		t.Errorf("text = %q, want a red car", text)
	}
}

func TestOpenAICompatibleAdapter_NotConfigured(t *testing.T) {
	t.Parallel()
	ad := NewOpenAICompatible(config.LLMConfig{})
	if _, err := ad.Describe(context.Background(), ImageRef{Source: SourceBase64, Data: "aGVsbG8="}, ""); err == nil {
		t.Fatal("want error for empty base url, got nil")
	}
}