"use client";

import { Inter } from "next/font/google";
import ActivityCalendar from "react-activity-calendar";
import * as duckdb from "@duckdb/duckdb-wasm"
import { useState, useEffect } from "react";
import { Tooltip as MuiTooltip } from '@mui/material';

const inter = Inter({ subsets: ["latin"] });

interface CustomActivity {
  date: string;
  count: number;
  level: number;
  details: Array<{ provider: string; count: number }>;
}

type ProviderKey = "mistralai" | "meta-llama" | "openai" | "anthropic" | "google";

export default function Home() {
  const [calendarData, setCalendarData] = useState<Record<ProviderKey, CustomActivity[]>>({} as Record<ProviderKey, CustomActivity[]>);
  const [isLoading, setIsLoading] = useState(true);

  const PROVIDERS_MAP: Record<ProviderKey, { name: string; color: string }> = {
    "mistralai": {"name": "Mistral AI", "color": "#ff7000"},
    "meta-llama": {"name": "Meta", "color": "#0668E1"},
    "openai": {"name": "OpenAI", "color": "#10A37F"},
    "anthropic": {"name": "Anthropic", "color": "#cc785c"},
    "google": {"name": "Google", "color": "#4285F4"},
  }

  const getModelData = async (conn: duckdb.AsyncDuckDBConnection) => {
    const result = await conn.query(`
      SELECT 
        STRFTIME(DATE_TRUNC('day', CAST(createdAt AS DATE)), '%Y-%m-%d') AS date,
        CASE 
          WHEN SPLIT_PART(id, '/', 1) IN ('meta-llama', 'facebook') THEN 'meta-llama'
          ELSE SPLIT_PART(id, '/', 1)
        END AS provider,
        COUNT(*) AS count
      FROM models
      WHERE CAST(createdAt AS DATE) >= DATE_TRUNC('year', CURRENT_DATE)
      AND (
        SPLIT_PART(id, '/', 1) IN (${Object.keys(PROVIDERS_MAP).map(provider => `'${provider}'`).join(', ')})
        OR SPLIT_PART(id, '/', 1) = 'facebook'
      )
      GROUP BY DATE_TRUNC('day', CAST(createdAt AS DATE)), 
        CASE 
          WHEN SPLIT_PART(id, '/', 1) IN ('meta-llama', 'facebook') THEN 'meta-llama'
          ELSE SPLIT_PART(id, '/', 1)
        END
      ORDER BY date
    `);
    return result.toArray().map((row: any) => ({
      date: row.date,
      provider: row.provider,
      count: Number(row.count)
    }));
  }

  const generateCalendarData = (modelData: any[]) => {
    const data: Record<ProviderKey, CustomActivity[]> = Object.keys(PROVIDERS_MAP).reduce((acc, provider) => {
      acc[provider as ProviderKey] = [];
      return acc;
    }, {} as Record<ProviderKey, CustomActivity[]>);

    const today = new Date();
    const startOfYear = new Date(today.getFullYear(), 0, 1);

    for (let d = new Date(startOfYear); d <= today; d.setDate(d.getDate() + 1)) {
      const dateString = d.toISOString().split('T')[0];
      
      Object.keys(PROVIDERS_MAP).forEach((provider) => {
        const dayData = modelData.filter(item => item.date === dateString && item.provider === provider);
        const count = dayData.reduce((sum, item) => sum + item.count, 0);
        
        data[provider as ProviderKey].push({
          date: dateString,
          count,
          level: 0,   
          details: dayData,
        });
      });
    }

    const avgCounts: Record<ProviderKey, number> = Object.fromEntries(
      Object.keys(PROVIDERS_MAP).map(provider => [
        provider,
        data[provider as ProviderKey].reduce((sum, day) => sum + day.count, 0) / data[provider as ProviderKey].length || 0
      ])
    ) as Record<ProviderKey, number>;

    Object.entries(data).forEach(([provider, days]) => {
      const avgCount = avgCounts[provider as ProviderKey];
      days.forEach(day => {
        day.level = day.count === 0 ? 0 :
                    day.count <= avgCount * 0.5 ? 1 :
                    day.count <= avgCount ? 2 :
                    day.count <= avgCount * 1.5 ? 3 : 4;
      });
    });

    return data;
  }

  const initDB = async () => {
    const CDN_BASE = `https://cdn.jsdelivr.net/npm/@duckdb/duckdb-wasm@next`

    const JSDELIVR_BUNDLES = {
      mvp: {
        mainModule: `${CDN_BASE}/dist/duckdb-mvp.wasm`,
        mainWorker: `${CDN_BASE}/dist/duckdb-browser-mvp.worker.js`,
      },
      eh: {
        mainModule: `${CDN_BASE}/dist/duckdb-eh.wasm`,
        mainWorker: `${CDN_BASE}/dist/duckdb-browser-eh.worker.js`,
      },
    }

    const bundle = await duckdb.selectBundle(JSDELIVR_BUNDLES)
    const worker_url = URL.createObjectURL(
      new Blob([`importScripts("${bundle.mainWorker}");`], {
        type: "text/javascript",
      })
    )

    const worker = new Worker(worker_url)
    const logger = new duckdb.ConsoleLogger()
    const db = new duckdb.AsyncDuckDB(logger, worker)
    await db.instantiate(bundle.mainModule)

    const connection = await db.connect()

    await connection.query(`
        CREATE VIEW models AS SELECT * FROM read_parquet('https://huggingface.co/datasets/cfahlgren1/hub-stats/resolve/refs%2Fconvert%2Fparquet/models/train/0000.parquet?download=true');
    `);

    const modelData = await getModelData(connection);
    const calendarData = generateCalendarData(modelData);
    setCalendarData(calendarData);
    setIsLoading(false);

    await connection.close();
  }

  useEffect(() => {
    initDB();
  }, []);

  return (
    <main className={`flex flex-col items-center justify-center min-h-screen mx-auto p-24 ${inter.className}`}>
      <h1 className="text-5xl font-bold text-center">Open Source Calendar</h1>
      <p className="text-center mt-2 text-sm">A calendar for open source model releases.</p>
      <div className="mt-16">
        {isLoading ? (
          <p>Loading...</p>
        ) : (
          <>
            {Object.entries(PROVIDERS_MAP)
              .sort(([keyA], [keyB]) => 
                calendarData[keyB as ProviderKey].reduce((sum, day) => sum + day.count, 0) -
                calendarData[keyA as ProviderKey].reduce((sum, day) => sum + day.count, 0)
              )
              .map(([key, value]) => (
                <div key={key} className="mb-8">
                  <h2 className="text-2xl font-bold mb-2">{value.name}</h2>
                  <ActivityCalendar 
                    data={calendarData[key as ProviderKey]}
                    theme={{
                      dark: ['#161b22', value.color],
                    }}
                    colorScheme="dark"
                    renderBlock={(block, activity) => (
                      <MuiTooltip
                        title={`${activity.count} activities on ${activity.date}`}
                      >
                        {block}
                      </MuiTooltip>
                    )}
                  />
                </div>
              ))
            }
          </>
        )}
      </div>
    </main>
  );
}