/*
Will display an overview with the following datasources:
1. Current broadcaster.
2. Viewer count.
3. Video settings.

TODO: Link each overview value to the sub-page that focuses on it.
*/

import React, { useState, useEffect, useContext } from "react";
import { Row, Col, Skeleton, Result, List, Typography, Card } from "antd";
import { UserOutlined, ClockCircleOutlined } from "@ant-design/icons";
import { formatDistanceToNow, formatRelative } from "date-fns";
import { ServerStatusContext } from "../utils/server-status-context";
import StatisticItem from "./components/statistic"
import LogTable from "./components/log-table";

import {
  STATUS,
  SERVER_CONFIG,
  LOGS_WARN,
  fetchData,
  FETCH_INTERVAL,
} from "../utils/apis";
import { formatIPAddress, isEmptyObject } from "../utils/format";
import OwncastLogo from "./components/logo"

const { Title } = Typography;



export default function Stats() {
  const context = useContext(ServerStatusContext);
  const { broadcaster } = context || {};
  const { remoteAddr, streamDetails } = broadcaster || {};

  // Pull in the server status so we can show server overview.
  const [stats, setStats] = useState(null);
  const getStats = async () => {
    try {
      const result = await fetchData(STATUS);
      setStats(result);
    } catch (error) {
      console.log(error);
    }

    getConfig();
    getLogs();
  };


  // Pull in the server config so we can show config overview.
  const [config, setConfig] = useState({
    streamKey: "",
    yp: {
      enabled: false,
    },
    videoSettings: {
      videoQualityVariants: [
        {
          audioPassthrough: false,
          videoBitrate: 0,
          audioBitrate: 0,
          framerate: 0,
        },
      ],
    },
  });
  const [logs, setLogs] = useState([]);

  const getConfig = async () => {
    try {
      const result = await fetchData(SERVER_CONFIG);
      setConfig(result);
    } catch (error) {
      console.log(error);
    }
  };

  const getLogs = async () => {
    try {
      const result = await fetchData(LOGS_WARN);
      setLogs(result);
    } catch (error) {
      console.log("==== error", error);
    }
  };

  useEffect(() => {
    setInterval(getStats, FETCH_INTERVAL);
    getStats();
  }, []);

  if (isEmptyObject(config) || isEmptyObject(stats)) {
    return (
      <div>
        <Skeleton active />
        <Skeleton active />
        <Skeleton active />
      </div>
    );
  }

  const logTable = logs.length > 0 ? <LogTable logs={logs} pageSize={5} /> : null
  console.log(logs)

  if (!broadcaster) {
    return <Offline />;
  }
  
  const videoSettings = config.videoSettings.videoQualityVariants;
  const videoQualitySettings = videoSettings.map((setting, index) => {
    const audioSetting =
      setting.audioPassthrough || setting.audioBitrate === 0
        ? `${streamDetails.audioBitrate} kpbs (passthrough)`
        : `${setting.audioBitrate} kbps`;
    
    return (
      // eslint-disable-next-line react/no-array-index-key
      <Row gutter={[16, 16]} key={index}>
        <StatisticItem
          title="Outbound Video Stream"
          value={`${setting.videoBitrate} kbps ${setting.framerate} fps`}
          prefix={null}
          color="#334"
        />
        <StatisticItem
          title="Outbound Audio Stream"
          value={audioSetting}
          prefix={null}
          color="#334"
        />
      </Row>
    );
  });

  const { viewerCount, sessionMaxViewerCount } = stats;
  const streamVideoDetailString = `${streamDetails.videoCodec} ${streamDetails.videoBitrate} kbps ${streamDetails.width}x${streamDetails.height}`;
  const streamAudioDetailString = `${streamDetails.audioCodec} ${streamDetails.audioBitrate} kpbs`;

  return (
    <div>
      <Title>Server Overview</Title>
      <Row gutter={[16, 16]}>
        <StatisticItem
          title={`Stream started ${formatRelative(
            new Date(broadcaster.time),
            new Date()
          )}`}
          value={formatDistanceToNow(new Date(broadcaster.time))}
          prefix={<ClockCircleOutlined />}
          color="#334"
        />
        <StatisticItem
          title="Viewers"
          value={viewerCount}
          prefix={<UserOutlined />}
          color="#334"
        />
        <StatisticItem
          title="Peak viewer count"
          value={sessionMaxViewerCount}
          prefix={<UserOutlined />}
          color="#334"
        />
      </Row>

      <Row gutter={[16, 16]}>
        <StatisticItem
          title="Input"
          value={formatIPAddress(remoteAddr)}
          prefix={null}
          color="#334"
        />
        <StatisticItem
          title="Inbound Video Stream"
          value={streamVideoDetailString}
          prefix={null}
          color="#334"
        />
        <StatisticItem
          title="Inbound Audio Stream"
          value={streamAudioDetailString}
          prefix={null}
          color="#334"
        />
      </Row>

      {videoQualitySettings}

      <Row gutter={[16, 16]}>
        <StatisticItem
          title="Stream key"
          value={config.streamKey}
          prefix={null}
          color="#334"
        />
        <StatisticItem
          title="Directory registration enabled"
          value={config.yp.enabled.toString()}
          prefix={null}
          color="#334"
        />
      </Row>

      {logTable}
    </div>
  );

  function Offline() {
    const data = [
      {
        title: "Send some test content",
        content: (
          <div>
            Test your server with any video you have around. Pass it to the test script and start streaming it.
            <blockquote>
              <em>./test/ocTestStream.sh yourVideo.mp4</em>
            </blockquote>
          </div>
        ),
      },
      {
        title: "Use your broadcasting software",
        content: (
          <div>
            <a href="https://owncast.online/docs/broadcasting/">Learn how to point your existing software to your new server and start streaming your content.</a>
          </div>
        )
      },
      {
        title: "Chat is disabled",
        content: "Chat will continue to be disabled until you begin a live stream."
      },
      {
        title: "Embed your video onto other sites",
        content: (
          <div>
            <a href="https://owncast.online/docs/embed">Learn how you can add your Owncast stream to other sites you control.</a>
          </div>
        )
      }
    ];
    return (
      <div>
        <Result
          icon={<OwncastLogo />}
          title="No stream is active."
          subTitle="You should start one."
        />
  
        <List
          grid={{
            gutter: 16,
            xs: 1,
            sm: 2,
            md: 2,
            lg: 6,
            xl: 3,
            xxl: 3,
          }}
          dataSource={data}
          renderItem={(item) => (
            <List.Item>
              <Card title={item.title}>{item.content}</Card>
            </List.Item>
          )}
        />
        {logTable}
      </div>
    );
  }
}