package chat

import (
	"encoding/json"
	"strings"
	"testing"
)

func TestQwen3Renderer_ToolsAndToolCalls(t *testing.T) {
	r := &Qwen3Renderer{}

	toolSchema := map[string]any{
		"name": "get_weather",
		"description": "Get current weather",
		"parameters": map[string]any{
			"type": "object",
			"properties": map[string]any{
				"city": map[string]any{"type": "string"},
			},
		},
	}

	args, err := json.Marshal(map[string]any{"city": "Istanbul"})
	if err != nil {
		t.Fatal(err)
	}

	out, err := r.Render(
		[]Message{
			{Role: "user", Content: "Weather?"},
			{Role: "assistant", Content: "", ToolCalls: []ToolCall{{Name: "get_weather", Arguments: args}}},
		},
		Options{AddGenerationPrompt: false, EnableThinking: true, Tools: []any{toolSchema}},
	)
	if err != nil {
		t.Fatalf("render failed: %v", err)
	}

	if !strings.Contains(out, "# Tools") {
		t.Fatalf("missing tools header")
	}
	if !strings.Contains(out, "<tools>") || !strings.Contains(out, "</tools>") {
		t.Fatalf("missing <tools> wrapper")
	}
	if !strings.Contains(out, "<tool_call>") || !strings.Contains(out, "\"name\": \"get_weather\"") {
		t.Fatalf("missing tool_call encoding: %q", out)
	}
}

func TestQwen3Renderer_ToolResponseGroup(t *testing.T) {
	r := &Qwen3Renderer{}

	out, err := r.Render(
		[]Message{
			{Role: "user", Content: "Do thing"},
			{Role: "tool", Content: "{\"ok\":true}"},
			{Role: "assistant", Content: "Done"},
		},
		Options{AddGenerationPrompt: false, EnableThinking: true},
	)
	if err != nil {
		t.Fatalf("render failed: %v", err)
	}
	if !strings.Contains(out, "<tool_response>") || !strings.Contains(out, "</tool_response>") {
		t.Fatalf("missing tool_response wrapper: %q", out)
	}
	if !strings.Contains(out, "<|im_start|>user\n<tool_response>") {
		t.Fatalf("tool response not wrapped as user group: %q", out)
	}
}