import type { CollectionConfig } from 'payload'
import { logAfterChange, logAfterDelete } from '../hooks/logAction'
import { cacheAfterChange, cacheAfterDelete } from '../hooks/cacheInvalidation'
import {
  BlocksFeature,
  BoldFeature,
  HeadingFeature,
  InlineCodeFeature,
  ItalicFeature,
  lexicalEditor,
  LinkFeature,
  OrderedListFeature,
  ParagraphFeature,
  UnorderedListFeature,
  FixedToolbarFeature,
  InlineToolbarFeature,
  HorizontalRuleFeature,
  BlockquoteFeature,
  AlignFeature,
} from '@payloadcms/richtext-lexical'

export const Announcements: CollectionConfig = {
  slug: 'announcements',
  admin: {
    useAsTitle: 'title',
    defaultColumns: ['title', 'type', 'status', 'publishedAt', 'updatedAt'],
    description: '管理系统公告和通知',
    pagination: {
      defaultLimit: 25,
    },
  },
  access: {
    read: ({ req: { user } }) => {
      // 公开访问已发布的公告
      if (!user) {
        return {
          status: { equals: 'published' },
        }
      }
      // 认证用户可以查看所有
      return true
    },
    create: ({ req: { user } }) => {
      // 所有已认证用户都可以创建
      return Boolean(user)
    },
    update: ({ req: { user } }) => {
      // 所有已认证用户都可以更新
      return Boolean(user)
    },
    delete: ({ req: { user } }) => {
      // 只有 admin 可以删除
      if (!user) return false
      return user.roles?.includes('admin') || false
    },
  },
  fields: [
    {
      type: 'row',
      fields: [
        {
          name: 'title',
          type: 'text',
          required: true,
          admin: {
            description: '公告标题',
            width: '70%',
          },
        },
        {
          name: 'type',
          type: 'select',
          required: true,
          defaultValue: 'info',
          options: [
            {
              label: '信息',
              value: 'info',
            },
            {
              label: '警告',
              value: 'warning',
            },
            {
              label: '重要',
              value: 'important',
            },
            {
              label: '紧急',
              value: 'urgent',
            },
          ],
          admin: {
            description: '公告类型',
            width: '30%',
          },
        },
      ],
    },
    {
      type: 'row',
      fields: [
        {
          name: 'status',
          type: 'select',
          required: true,
          defaultValue: 'draft',
          options: [
            {
              label: '草稿',
              value: 'draft',
            },
            {
              label: '已发布',
              value: 'published',
            },
            {
              label: '已归档',
              value: 'archived',
            },
          ],
          admin: {
            description: '发布状态',
            width: '50%',
          },
        },
        {
          name: 'priority',
          type: 'number',
          defaultValue: 0,
          admin: {
            description: '优先级（数字越大越靠前）',
            width: '50%',
          },
        },
      ],
    },
    {
      name: 'summary',
      type: 'textarea',
      admin: {
        description: '公告摘要（显示在列表页）',
      },
    },
    {
      name: 'content',
      type: 'richText',
      required: true,
      admin: {
        description: '公告详细内容',
      },
      editor: lexicalEditor({
        features: ({ defaultFeatures }) => [
          ...defaultFeatures,
          HeadingFeature({ enabledHeadingSizes: ['h1', 'h2', 'h3', 'h4'] }),
          BoldFeature(),
          ItalicFeature(),
          LinkFeature({}),
          OrderedListFeature(),
          UnorderedListFeature(),
          BlockquoteFeature(),
          AlignFeature(),
          InlineCodeFeature(),
          FixedToolbarFeature(),
          InlineToolbarFeature(),
          HorizontalRuleFeature(),
        ],
      }),
    },
    {
      type: 'row',
      fields: [
        {
          name: 'publishedAt',
          type: 'date',
          admin: {
            description: '发布时间',
            width: '50%',
            date: {
              displayFormat: 'yyyy-MM-dd HH:mm',
            },
          },
        },
        {
          name: 'expiresAt',
          type: 'date',
          admin: {
            description: '过期时间（可选）',
            width: '50%',
            date: {
              displayFormat: 'yyyy-MM-dd HH:mm',
            },
          },
        },
      ],
    },
    {
      name: 'showOnHomepage',
      type: 'checkbox',
      defaultValue: false,
      admin: {
        description: '在首页显示此公告',
      },
    },
    {
      name: 'author',
      type: 'relationship',
      relationTo: 'users',
      admin: {
        description: '发布者',
      },
    },
  ],
  timestamps: true,
  hooks: {
    beforeChange: [
      ({ data, operation }) => {
        // 自动设置发布时间
        if (operation === 'create' && data.status === 'published' && !data.publishedAt) {
          data.publishedAt = new Date()
        }
        return data
      },
    ],
    afterChange: [logAfterChange],
    afterDelete: [logAfterDelete],
  },
}