/**
 * Review Page Configuration
 * Centralized config for Review page table, filters, and actions
 */

import { Content } from '../../services/api';
import { Link } from 'react-router-dom';
import Badge from '../../components/ui/badge/Badge';
import { formatRelativeDate } from '../../utils/date';
import { CheckCircleIcon } from '../../icons';
import { STRUCTURE_LABELS, TYPE_LABELS } from '../structureMapping';

export interface ColumnConfig {
  key: string;
  label: string;
  sortable?: boolean;
  sortField?: string;
  align?: 'left' | 'center' | 'right';
  width?: string;
  numeric?: boolean;
  date?: boolean;
  render?: (value: any, row: any) => React.ReactNode;
  toggleable?: boolean;
  toggleContentKey?: string;
  toggleContentLabel?: string;
  defaultVisible?: boolean;
}

export interface FilterConfig {
  key: string;
  label: string;
  type: 'text' | 'select';
  placeholder?: string;
  options?: Array<{ value: string; label: string }>;
}

export interface HeaderMetricConfig {
  label: string;
  accentColor: 'blue' | 'green' | 'amber' | 'purple';
  calculate: (data: { content: Content[]; totalCount: number }) => number;
}

export interface ReviewPageConfig {
  columns: ColumnConfig[];
  filters: FilterConfig[];
  headerMetrics: HeaderMetricConfig[];
}

export function createReviewPageConfig(params: {
  searchTerm: string;
  setSearchTerm: (value: string) => void;
  statusFilter: string;
  setStatusFilter: (value: string) => void;
  setCurrentPage: (page: number) => void;
  activeSector: { id: number; name: string } | null;
}): ReviewPageConfig {
  const showSectorColumn = !params.activeSector;

  const columns: ColumnConfig[] = [
    // Title first, then categories and tags (moved after title per change request)
    {
      key: 'title',
      label: 'Title',
      sortable: true,
      sortField: 'title',
      toggleable: true,
      toggleContentKey: 'content_html',
      toggleContentLabel: 'Generated Content',
      render: (value: string, row: Content) => (
        <div className="flex items-center gap-2">
          <Link to={`/writer/content/${row.id}`} className="font-medium text-gray-900 dark:text-white hover:underline">
            {value || `Content #${row.id}`}
          </Link>
        </div>
      ),
    },
    {
      key: 'categories',
      label: 'Categories',
      sortable: false,
      width: '180px',
      render: (_value: any, row: Content) => {
        const categories = row.taxonomy_terms_data?.filter((t: any) => t.taxonomy_type === 'category') || [];
        if (!categories.length) return <span className="text-gray-400 dark:text-gray-500">-</span>;
        return (
          <div className="flex flex-wrap gap-1">
            {categories.map((cat: any) => (
              <span key={cat.id} className="px-2 py-0.5 bg-purple-50 dark:bg-purple-900/20 text-purple-700 dark:text-purple-300 rounded-full text-xs font-medium">{cat.name}</span>
            ))}
          </div>
        );
      },
      toggleable: false,
      defaultVisible: true,
    },
    {
      key: 'tags',
      label: 'Tags',
      sortable: false,
      width: '180px',
      render: (_value: any, row: Content) => {
        const tags = row.taxonomy_terms_data?.filter((t: any) => t.taxonomy_type === 'tag') || [];
        if (!tags.length) return <span className="text-gray-400 dark:text-gray-500">-</span>;
        return (
          <div className="flex flex-wrap gap-1">
            {tags.map((tag: any) => (
              <span key={tag.id} className="px-2 py-0.5 bg-brand-50 dark:bg-brand-900/20 text-brand-700 dark:text-brand-300 rounded-full text-xs font-medium">{tag.name}</span>
            ))}
          </div>
        );
      },
      toggleable: false,
      defaultVisible: true,
    },
    {
      key: 'title',
      label: 'Title',
      sortable: true,
      sortField: 'title',
      toggleable: true,
      toggleContentKey: 'content_html',
      toggleContentLabel: 'Generated Content',
      render: (value: string, row: Content) => (
        <div className="flex items-center gap-2">
          <span className="font-medium text-gray-900 dark:text-white">
            {value || `Content #${row.id}`}
          </span>
        </div>
      ),
    },
    {
      key: 'content_type',
      label: 'Type',
      sortable: true,
      sortField: 'content_type',
      width: '120px',
      render: (value: string) => (
        <Badge color="primary" size="sm" variant="light">
          {TYPE_LABELS[value] || value || '-'}
        </Badge>
      ),
    },
    {
      key: 'content_structure',
      label: 'Structure',
      sortable: true,
      sortField: 'content_structure',
      width: '150px',
      render: (value: string) => (
        <Badge color="info" size="sm" variant="light">
          {STRUCTURE_LABELS[value] || value || '-'}
        </Badge>
      ),
    },
    {
      key: 'cluster_name',
      label: 'Cluster',
      sortable: false,
      width: '150px',
      render: (_value: any, row: Content) => {
        const clusterName = row.cluster_name;
        if (!clusterName) {
          return <span className="text-gray-400 dark:text-gray-500">-</span>;
        }
        return (
          <Badge color="primary" size="sm" variant="light">
            {clusterName}
          </Badge>
        );
      },
    },
    {
      key: 'word_count',
      label: 'Words',
      sortable: true,
      sortField: 'word_count',
      numeric: true,
      width: '100px',
      render: (value: number) => (
        <span className="font-mono text-sm text-gray-700 dark:text-gray-300">
          {value?.toLocaleString() || 0}
        </span>
      ),
    },
    {
      key: 'created_at',
      label: 'Created',
      sortable: true,
      sortField: 'created_at',
      date: true,
      align: 'right',
      render: (value: string) => (
        <span className="text-gray-700 dark:text-gray-300 whitespace-nowrap">
          {formatRelativeDate(value)}
        </span>
      ),
    },
  ];

  if (showSectorColumn) {
    columns.splice(4, 0, {
      key: 'sector_name',
      label: 'Sector',
      sortable: false,
      width: '120px',
      render: (value: string, row: Content) => (
        <Badge color="info" size="sm" variant="light">
          {row.sector_name || '-'}
        </Badge>
      ),
    });
  }

  return {
    columns,
    filters: [
      {
        key: 'search',
        label: 'Search',
        type: 'text',
        placeholder: 'Search content...',
      },
    ],
    headerMetrics: [
      {
        label: 'Total Ready',
        accentColor: 'blue',
        calculate: ({ totalCount }) => totalCount,
      },
      {
        label: 'Has Images',
        accentColor: 'green',
        calculate: ({ content }) => content.filter(c => c.has_generated_images).length,
      },
      {
        label: 'Optimized',
        accentColor: 'purple',
        calculate: ({ content }) => content.filter(c => (c as any).optimization_score >= 80).length,
      },
    ],
  };
}