package replyexport

import (
	"testing"
	"time"
)

func TestEvaluatePolicy_Matrix(t *testing.T) {
	tests := []struct {
		name           string
		opts           PolicyOptions
		wantKind       ContentKind
		wantPolicy     ExportPolicy
		wantReason     ReasonCode
		hasFormats     bool
		expectedFormat string
	}{
		{
			name: "1. 助手已完成完整长文 -> full",
			opts: PolicyOptions{
				Role:    "assistant",
				Status:  "completed",
				Content: "## 风险评估报告\n\n根据现有临床数据，该方案具有以下风险：\n1. 电气安全性需重新打标\n2. 传感器存在温漂",
			},
			wantKind:   KindDocumentText,
			wantPolicy: PolicyFull,
			hasFormats: true,
		},
		{
			name: "2. 助手已完成 + 完整正文 + 辅助卡片 -> full (仅导出正文)",
			opts: PolicyOptions{
				Role:               "assistant",
				Status:             "completed",
				Content:            "## 变更建议书\n\n经系统审核，以下第 3 条款存在重大缺陷，建议采纳修改意见：\n- 原文：无过温保护\n- 修改后：增加热敏电阻切断机制",
				HasInteractiveCard: true,
			},
			wantKind:   KindDocumentText,
			wantPolicy: PolicyFull,
			hasFormats: true,
		},
		{
			name: "3. 助手纯交互卡片 (短引导语) -> none, CARD_ONLY",
			opts: PolicyOptions{
				Role:               "assistant",
				Status:             "completed",
				Content:            "请确认以下操作卡片：",
				HasInteractiveCard: true,
			},
			wantKind:   KindActionCard,
			wantPolicy: PolicyNone,
			wantReason: ReasonCardOnly,
			hasFormats: false,
		},
		{
			name: "4. 用户消息 -> none, NOT_ASSISTANT",
			opts: PolicyOptions{
				Role:    "user",
				Content: "请帮我分析一下项目进度",
			},
			wantKind:   KindConversationalText,
			wantPolicy: PolicyNone,
			wantReason: ReasonNotAssistant,
		},
		{
			name: "5. 系统消息 -> none, NOT_ASSISTANT",
			opts: PolicyOptions{
				Role:    "system",
				Content: "系统已建立新会话",
			},
			wantKind:   KindConversationalText,
			wantPolicy: PolicyNone,
			wantReason: ReasonNotAssistant,
		},
		{
			name: "6. 流式生成中 -> none, NOT_COMPLETED",
			opts: PolicyOptions{
				Role:    "assistant",
				Status:  "streaming_status",
				Content: "正在研判您的意图...",
			},
			wantKind:   KindStatusUpdate,
			wantPolicy: PolicyNone,
			wantReason: ReasonNotCompleted,
		},
		{
			name: "7. 失败/已取消消息 -> none, ERROR_OR_CANCELLED",
			opts: PolicyOptions{
				Role:     "assistant",
				Status:   "failed",
				HasError: true,
				Content:  "任务执行失败，网络超时",
			},
			wantKind:   KindErrorNotice,
			wantPolicy: PolicyNone,
			wantReason: ReasonErrorOrCancelled,
		},
		{
			name: "8. 极短寒暄 -> copy_only",
			opts: PolicyOptions{
				Role:    "assistant",
				Status:  "completed",
				Content: "好的，收到！",
			},
			wantKind:   KindConversationalText,
			wantPolicy: PolicyCopyOnly,
			hasFormats: true,
		},
		{
			name: "9. 空正文 -> none, EMPTY_BODY",
			opts: PolicyOptions{
				Role:    "assistant",
				Status:  "completed",
				Content: "   \n\t  ",
			},
			wantKind:   KindStatusUpdate,
			wantPolicy: PolicyNone,
			wantReason: ReasonEmptyBody,
		},
		{
			name: "10. 受限敏感内容 -> none, CONTENT_RESTRICTED",
			opts: PolicyOptions{
				Role:         "assistant",
				Status:       "completed",
				Content:      "敏感内容正文",
				IsRestricted: true,
			},
			wantKind:   KindDocumentText,
			wantPolicy: PolicyNone,
			wantReason: ReasonContentRestricted,
		},
	}

	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			kind, cap := EvaluatePolicy(tt.opts)
			if kind != tt.wantKind {
				t.Errorf("kind = %v, want %v", kind, tt.wantKind)
			}
			if cap.Policy != tt.wantPolicy {
				t.Errorf("policy = %v, want %v", cap.Policy, tt.wantPolicy)
			}
			if tt.wantReason != "" && cap.ReasonCode != tt.wantReason {
				t.Errorf("reasonCode = %v, want %v", cap.ReasonCode, tt.wantReason)
			}
			if tt.hasFormats && len(cap.Formats) == 0 {
				t.Errorf("expected non-empty formats, got empty")
			}
			if !tt.hasFormats && len(cap.Formats) > 0 {
				t.Errorf("expected empty formats, got %v", cap.Formats)
			}
			if cap.ContentSha256 == "" {
				t.Errorf("expected non-empty ContentSha256")
			}
		})
	}
}

func TestDeriveTitle(t *testing.T) {
	cases := []struct {
		input     string
		wantTitle string
	}{
		{
			input:     "# 临床评估备忘录\n正文内容...",
			wantTitle: "临床评估备忘录",
		},
		{
			input:     "## 2.1 架构设计对比分析\n内容...",
			wantTitle: "2.1 架构设计对比分析",
		},
		{
			input:     "针对用户提出的第三阶段审核驳回要求，项目组给出如下补救措施：\n1. 增加测试...",
			wantTitle: "针对用户提出的第三阶段审核驳回要求，项目组给出如下补救措施：",
		},
	}

	for _, tc := range cases {
		got := DeriveTitle(tc.input, testTime())
		if got != tc.wantTitle {
			t.Errorf("DeriveTitle(%q) = %q, want %q", tc.input, got, tc.wantTitle)
		}
	}
}

func testTime() (t time.Time) {
	return time.Date(2026, 9, 10, 15, 30, 0, 0, time.Local)
}