import React from "react";
import Card from "./Card";
import GoatCounter from "./GoatCounter";

const MainPage = (props) => {
    const data = props.data;
    const latest = data[data.length - 1];
    const prior = data[data.length - (1 + props.timeDifference)];
    const priorPrior = data[Math.max(0, data.length - (1 + props.timeDifference * 2))];

    const positiveTestRate = Math.max(
        0,
        Math.min(
            100,
            ((latest.total_students - prior.total_students) * 100) /
                (latest.tests_administered - prior.tests_administered)
        )
    ).toFixed(1);
    const priorPositiveTestRate = Math.max(
        0,
        Math.min(
            100,
            ((prior.total_students - priorPrior.total_students) * 100) /
                (prior.tests_administered - priorPrior.tests_administered)
        )
    ).toFixed(1);

    return (
        <>
            <h4 className="text-2xl">
                Alert Level: {latest.alert_level.charAt(0).toUpperCase() + latest.alert_level.slice(1)}
            </h4>
            <h5 className="text-gray-600 text-sm">
                (Prior Alert Level: {prior.alert_level.charAt(0).toUpperCase() + prior.alert_level.slice(1)})
            </h5>
            <br />
            <div id="total">
                <h4 className="text-2xl">
                    Total Positive Cases Since {props.showAllTime ? "August 19 (First Day of Classes)" : "January 1"}
                </h4>
                <div className="Section">
                    <Card
                        name="Students"
                        latest={latest.total_students}
                        diff={latest.total_students - prior.total_students}
                        link="/totalstudents"
                    />
                    <Card
                        name="Staff"
                        latest={latest.total_staff}
                        diff={latest.total_staff - prior.total_staff}
                        link="/totalstaff"
                    />
                </div>
            </div>
            <br />
            <div id="new">
                <h4 className="text-2xl">New Positive Cases From Past 14 Days</h4>
                <div className="Section">
                    <Card
                        name="Students"
                        latest={latest.new_students}
                        diff={latest.new_students - prior.new_students}
                        link="/newstudents"
                    />
                    <Card
                        name="Staff"
                        latest={latest.new_staff}
                        diff={latest.new_staff - prior.new_staff}
                        link="/newstaff"
                    />
                </div>
            </div>
            <br />
            <div id="quarantine">
                <h4 className="text-2xl">Number of Students in Quarantine</h4>
                <h5 className="text-base">
                    Quarantine separates and restricts the movement of people who were exposed to a contagious disease
                    to see if they become sick.
                </h5>
                <div className="Section">
                    <Card
                        name="On Campus"
                        latest={latest.quarantine_on_campus}
                        diff={latest.quarantine_on_campus - prior.quarantine_on_campus}
                        link="/quarantineoncampus"
                    />
                    <Card
                        name="Off Campus"
                        latest={latest.quarantine_off_campus}
                        diff={latest.quarantine_off_campus - prior.quarantine_off_campus}
                        link="/quarantineoffcampus"
                    />
                </div>
            </div>
            <br />
            <div id="isolation">
                <h4 className="text-2xl">Number of Students in Isolation</h4>
                <h5 className="text-base">
                    Isolation separates sick people with a contagious disease from people who are not sick.
                </h5>
                <div className="Section">
                    <Card
                        name="On Campus"
                        latest={latest.isolation_on_campus}
                        diff={latest.isolation_on_campus - prior.isolation_on_campus}
                        link="isolationoncampus"
                    />
                    <Card
                        name="Off Campus"
                        latest={latest.isolation_off_campus}
                        diff={latest.isolation_off_campus - prior.isolation_off_campus}
                        link="isolationoffcampus"
                    />
                </div>
            </div>
            <br />
            <div id="tests">
                <h4 className="text-2xl">Tests</h4>
                <h5 className="text-base">
                    Positive Test Rate is calculated using the difference in total cases divided by the difference in
                    tests administed for the selected time frame (one day or one week)
                </h5>
                <div className="Section">
                    <Card
                        name="Tests Administered"
                        latest={latest.tests_administered}
                        diff={latest.tests_administered - prior.tests_administered}
                        link="/tests"
                    />
                    <Card
                        name="Positive Test Rate"
                        latest={positiveTestRate + "%"}
                        diff={(positiveTestRate - priorPositiveTestRate).toFixed(1) + "%"}
                        link="/positivetests"
                    />
                </div>
            </div>
            <br />
            <div id="beds">
                <h4 className="text-2xl">Quarantine/Isolation Bed Availability On-campus</h4>
                <div className="Section">
                    <Card
                        name="Beds Available"
                        latest={latest.beds_available + "%"}
                        diff={latest.beds_available - prior.beds_available + "%"}
                        suffix="%"
                        link="/beds"
                    />
                </div>
            </div>
            <GoatCounter />
        </>
    );
};

export default MainPage;