/*
Copyright (C) 2025 QuantumNous

This program is free software: you can redistribute it and/or modify
it under the terms of the GNU Affero General Public License as
published by the Free Software Foundation, either version 3 of the
License, or (at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Affero General Public License for more details.

You should have received a copy of the GNU Affero General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>.

For commercial licensing, please contact support@quantumnous.com
*/

import React, { useMemo } from 'react';
import { TrendingUp } from 'lucide-react';
import Sparkline from './Sparkline';
import { renderQuota } from '../../helpers';

const formatMD = (d) => {
  const m = d.getMonth() + 1;
  const day = d.getDate();
  return `${m}/${day}`;
};

const BentoTrend = ({
  dailyStats = [],
  topModels = [],
  className = '',
}) => {
  const counts = useMemo(() => dailyStats.map((d) => d.count), [dailyStats]);
  const costs = useMemo(() => dailyStats.map((d) => d.cost), [dailyStats]);

  const totalCalls = counts.reduce((s, v) => s + v, 0);
  const totalCost = costs.reduce((s, v) => s + v, 0);
  const avg = totalCalls > 0 ? (totalCalls / Math.max(counts.length, 1)).toFixed(1) : '0.0';
  const peak = counts.length > 0 ? Math.max(...counts) : 0;
  const topMax = topModels[0]?.count || 0;

  return (
    <div
      className={`relative flex flex-col gap-4 rounded-2xl border border-slate-200 bg-white p-6 transition-shadow hover:shadow-md dark:border-white/5 dark:bg-white/[0.02] dark:hover:shadow-black/20 ${className}`}
    >
      <div className='flex items-center justify-between gap-3'>
        <div className='flex items-center gap-3'>
          <div className='flex h-10 w-10 items-center justify-center rounded-xl bg-slate-100 text-slate-600 dark:bg-white/5 dark:text-white/70'>
            <TrendingUp size={18} />
          </div>
          <div>
            <div className='text-sm font-semibold text-slate-900 dark:text-white'>Token 使用趋势</div>
            <div className='mt-0.5 text-[11px] text-slate-400 tabular-nums dark:text-white/40'>
              近 7 天
              <span className='font-semibold text-slate-900 dark:text-white'> {totalCalls}</span> 次
              · 日均{' '}
              <span className='font-semibold text-slate-900 dark:text-white'>{avg}</span>
            </div>
          </div>
        </div>
        <div className='hidden text-right md:block'>
          <div className='text-[10px] uppercase tracking-wider text-slate-400 font-mono dark:text-white/30'>
            花费
          </div>
          <div className='font-mono text-sm font-semibold tabular-nums text-slate-900 dark:text-white'>
            {totalCost > 0 ? renderQuota(totalCost) : '—'}
          </div>
        </div>
      </div>

      <div className='flex min-h-[80px] flex-1 items-end text-blue-500'>
        <Sparkline data={counts} width={400} height={80} />
      </div>

      <div className='flex items-center justify-between text-[11px]'>
        <div className='flex items-center gap-1 tabular-nums'>
          {dailyStats.map((d, i) => (
            <span
              key={i}
              className={`w-8 text-center ${
                d.count === peak && peak > 0
                  ? 'font-semibold text-slate-900 dark:text-white'
                  : 'text-slate-300 dark:text-white/30'
              }`}
              title={`${d.date.getMonth() + 1}月${d.date.getDate()}日 ${d.count} 次`}
            >
              {formatMD(d.date)}
            </span>
          ))}
        </div>
        <div className='text-slate-500 tabular-nums dark:text-white/50'>
          峰值{' '}
          <span className='font-semibold text-slate-900 dark:text-white'>{peak}</span> 次
        </div>
      </div>

      {topModels.length > 0 && (
        <div className='border-t border-slate-100 pt-4 dark:border-white/5'>
          <div className='mb-2 flex items-center justify-between text-[11px] uppercase tracking-wider text-slate-400 dark:text-white/40'>
            <span>Top 5 模型</span>
            <span className='font-mono normal-case tracking-normal'>近 30 日</span>
          </div>
          <ul className='space-y-1.5'>
            {topModels.map((m, i) => {
              const pct = topMax > 0 ? (m.count / topMax) * 100 : 0;
              return (
                <li
                  key={m.name + i}
                  className='flex items-center gap-3 text-xs'
                  title={m.name}
                >
                  <span className='w-3 shrink-0 text-right font-mono text-[10px] text-slate-300 tabular-nums dark:text-white/30'>
                    {i + 1}
                  </span>
                  <span className='min-w-0 flex-1 truncate text-slate-700 dark:text-white/80'>
                    {m.name}
                  </span>
                  <div className='hidden h-1 w-24 overflow-hidden rounded-full bg-slate-100 sm:block dark:bg-white/5'>
                    <div
                      className='h-full rounded-full bg-slate-300 dark:bg-white/30'
                      style={{ width: `${pct}%` }}
                    />
                  </div>
                  <span className='w-12 shrink-0 text-right font-mono tabular-nums text-slate-500 dark:text-white/60'>
                    {m.count}
                  </span>
                </li>
              );
            })}
          </ul>
        </div>
      )}
    </div>
  );
};

export default BentoTrend;