package builders

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

	"code.tczkiot.com/wlw/ai-agent/internal/models"
	"code.tczkiot.com/wlw/ai-agent/internal/pkg/enums"
	"code.tczkiot.com/wlw/ai-agent/internal/pkg/i18nx"
)

func TestLocalizeConversationSummary(t *testing.T) {
	t.Parallel()

	tests := []struct {
		name    string
		locale  string
		summary string
		want    string
	}{
		{
			name:    "image summary in english",
			locale:  i18nx.LocaleEnUS,
			summary: "[图片]",
			want:    "[Image]",
		},
		{
			name:    "attachment summary in english",
			locale:  i18nx.LocaleEnUS,
			summary: "[附件] spec.pdf",
			want:    "[Attachment] spec.pdf",
		},
		{
			name:    "recalled message in english",
			locale:  i18nx.LocaleEnUS,
			summary: "该消息已撤回",
			want:    "This message was recalled.",
		},
		{
			name:    "business text is not translated",
			locale:  i18nx.LocaleEnUS,
			summary: "客户反馈无法登录",
			want:    "客户反馈无法登录",
		},
		{
			name:    "chinese locale keeps existing summary",
			locale:  i18nx.LocaleZhCN,
			summary: "[图片]",
			want:    "[图片]",
		},
	}

	for _, tt := range tests {
		tt := tt
		t.Run(tt.name, func(t *testing.T) {
			t.Parallel()
			if got := localizeConversationSummary(tt.locale, tt.summary); got != tt.want {
				t.Fatalf("localizeConversationSummary() = %q, want %q", got, tt.want)
			}
		})
	}
}

func TestLocalizeRenderableMessageContent(t *testing.T) {
	t.Parallel()

	tests := []struct {
		name    string
		locale  string
		content string
		want    string
	}{
		{
			name:    "recalled message in english",
			locale:  i18nx.LocaleEnUS,
			content: "该消息已撤回",
			want:    "This message was recalled.",
		},
		{
			name:    "normal customer message is not translated",
			locale:  i18nx.LocaleEnUS,
			content: "客户反馈无法登录",
			want:    "客户反馈无法登录",
		},
		{
			name:    "chinese locale keeps content",
			locale:  i18nx.LocaleZhCN,
			content: "该消息已撤回",
			want:    "该消息已撤回",
		},
	}

	for _, tt := range tests {
		tt := tt
		t.Run(tt.name, func(t *testing.T) {
			t.Parallel()
			if got := localizeRenderableMessageContent(tt.locale, tt.content); got != tt.want {
				t.Fatalf("localizeRenderableMessageContent() = %q, want %q", got, tt.want)
			}
		})
	}
}

func TestBuildMessageJSONDoesNotExposeSeqNo(t *testing.T) {
	resp := BuildMessageWithReadStatesAndLocale(&models.Message{
		ID:             1,
		ConversationID: 2,
		SenderType:     enums.IMSenderTypeCustomer,
		MessageType:    enums.IMMessageTypeText,
		Content:        "hello",
	}, nil, nil, nil, nil, nil, i18nx.DefaultLocale)

	raw, err := json.Marshal(resp)
	if err != nil {
		t.Fatalf("marshal message response: %v", err)
	}
	if strings.Contains(string(raw), "seqNo") {
		t.Fatalf("message response should not expose seqNo, got %s", raw)
	}
}

func TestBuildAIMessageIncludesAgentAvatar(t *testing.T) {
	const avatar = "https://cdn.example.com/ai-agent.png"
	resp := BuildMessageWithReadStatesAndLocale(&models.Message{
		ID:             3,
		ConversationID: 2,
		SenderType:     enums.IMSenderTypeAI,
		SenderID:       9,
		MessageType:    enums.IMMessageTypeText,
		Content:        "hello",
	}, nil, nil, map[int64]*models.AIAgent{
		9: {ID: 9, Name: "AI 客服", Avatar: avatar},
	}, nil, nil, i18nx.DefaultLocale)

	if resp.SenderName != "AI 客服" {
		t.Fatalf("sender name = %q, want AI 客服", resp.SenderName)
	}
	if resp.SenderAvatar != avatar {
		t.Fatalf("sender avatar = %q, want %q", resp.SenderAvatar, avatar)
	}
}