import test from 'node:test';
import assert from 'node:assert/strict';

import { filterDuplicateDecomposeDrafts } from './ai-decompose-dedupe';
import type { AgentDecomposeResult } from '@ftb/shared';
import type { DevTask } from './dev-task';
import type { TestCase } from './test-case';
import type { TaskCategory } from './task-category';

const categories: TaskCategory[] = [
  {
    id: 'cat-frontend',
    code: 'frontend_interaction',
    name: '前端交互',
    group: 'development',
    sortOrder: 1,
    isSystem: true,
  },
  {
    id: 'cat-test-functional',
    code: 'test_functional',
    name: '功能测试',
    group: 'testing',
    sortOrder: 2,
    isSystem: true,
  },
];

const requirements = [{ id: 'req-1', code: 'REQ001' }];

function makeResult(patch: Partial<AgentDecomposeResult>): AgentDecomposeResult {
  return {
    report: { matched: [], reqOnly: [], prototypeOnly: [], ambiguous: [] },
    devTaskDrafts: [],
    testCaseDrafts: [],
    ...patch,
  };
}

test('filters dev task drafts already adopted into existing tasks', () => {
  const existingDevTasks = [
    {
      id: 'task-1',
      title: '实现拖拽排序',
      categoryId: 'cat-frontend',
      references: [
        { type: 'requirement', id: 'req-1', label: 'REQ001 拖拽排序' },
        { type: 'prototype_note', id: 'QY0001', label: 'QY0001' },
      ],
    },
  ] as DevTask[];

  const result = filterDuplicateDecomposeDrafts(
    makeResult({
      devTaskDrafts: [
        {
          title: '实现拖拽排序',
          description: '实现范围：支持列表拖拽调整顺序。验收点：拖拽后顺序保持一致。',
          taskTypeName: '前端交互',
          categoryCode: 'frontend_interaction',
          priority: 'P2',
          aiEstimateHours: 0.25,
          references: [
            { type: 'requirement', id: 'REQ001', label: 'REQ001 拖拽排序' },
            { type: 'prototype_note', id: 'QY0001', label: 'QY0001' },
          ],
        },
      ],
    }),
    { existingDevTasks, existingTestCases: [], categories, requirements },
  );

  assert.equal(result.removedDevTaskCount, 1);
  assert.equal(result.result.devTaskDrafts.length, 0);
});

test('filters test case drafts already adopted into existing test cases', () => {
  const existingTestCases = [
    {
      id: 'tc-1',
      title: '验证拖拽排序成功',
      categoryId: 'cat-test-functional',
      references: [
        { type: 'requirement', id: 'req-1', label: 'REQ001 拖拽排序' },
        { type: 'prototype_note', id: 'QY0001', label: 'QY0001' },
      ],
    },
  ] as TestCase[];

  const result = filterDuplicateDecomposeDrafts(
    makeResult({
      testCaseDrafts: [
        {
          title: '验证拖拽排序成功',
          description: '拖拽后顺序保存',
          taskTypeName: '功能测试',
          categoryCode: 'test_functional',
          priority: 'P2',
          aiEstimateHours: 0.2,
          references: [
            { type: 'requirement', id: 'REQ001', label: 'REQ001 拖拽排序' },
            { type: 'prototype_note', id: 'QY0001', label: 'QY0001' },
          ],
        },
      ],
    }),
    { existingDevTasks: [], existingTestCases, categories, requirements },
  );

  assert.equal(result.removedTestCaseCount, 1);
  assert.equal(result.result.testCaseDrafts.length, 0);
});

test('keeps drafts with same references but different normalized title', () => {
  const existingDevTasks = [
    {
      id: 'task-1',
      title: '实现拖拽排序',
      categoryId: 'cat-frontend',
      references: [{ type: 'prototype_note', id: 'QY0001', label: 'QY0001' }],
    },
  ] as DevTask[];

  const result = filterDuplicateDecomposeDrafts(
    makeResult({
      devTaskDrafts: [
        {
          title: '保存拖拽排序结果',
          description: '实现范围：保存拖拽后的排序结果。验收点：刷新后顺序不丢失。',
          taskTypeName: '前端交互',
          categoryCode: 'frontend_interaction',
          priority: 'P2',
          aiEstimateHours: 0.5,
          references: [{ type: 'prototype_note', id: 'QY0001', label: 'QY0001' }],
        },
      ],
    }),
    { existingDevTasks, existingTestCases: [], categories, requirements },
  );

  assert.equal(result.removedDevTaskCount, 0);
  assert.equal(result.result.devTaskDrafts.length, 1);
});

test('filters adopted drafts by AI task type name even when categoryCode is unknown', () => {
  const customCategories: TaskCategory[] = [
    ...categories,
    {
      id: 'cat-ai-name-card',
      code: '人员名片交互',
      name: '人员名片交互',
      group: 'development',
      sortOrder: 3,
      isSystem: false,
    },
  ];
  const existingDevTasks = [
    {
      id: 'task-1',
      title: '实现同名员工名片入口',
      categoryId: 'cat-ai-name-card',
      references: [{ type: 'prototype_note', id: 'QY0019', label: 'QY0019' }],
    },
  ] as DevTask[];

  const result = filterDuplicateDecomposeDrafts(
    makeResult({
      devTaskDrafts: [
        {
          title: '实现同名员工名片入口',
          description: '实现范围：姓名后展示名片入口。验收点：点击后展示组织详情。',
          taskTypeName: '人员名片交互',
          categoryCode: 'ai_unknown',
          priority: 'P2',
          aiEstimateHours: 0.5,
          references: [{ type: 'prototype_note', id: 'QY0019', label: 'QY0019' }],
        },
      ],
    }),
    { existingDevTasks, existingTestCases: [], categories: customCategories, requirements },
  );

  assert.equal(result.removedDevTaskCount, 1);
  assert.equal(result.result.devTaskDrafts.length, 0);
});