const Critters = require('./resources/critters.json');
const fs = require("fs"); // Filesystem access

var list = {};

/* Critter handling functions */

var months = ["january","february","march","april","may","june","july","august","september","october","november","december"];
var seasons = ["winter", "spring", "summer", "autumn"];
var shadows = ["tiny", "small", "medium", "large", "huge", "huge with fin", "thin", "medium with fin"];

var getShadow = function(size) {
    return upFirst(shadows[size-1]);
}

var upFirst = function(str) {
    return str.charAt(0).toUpperCase() + str.slice(1);
}

var getSeason = function(month) {
    month--; // makes it so we can input indexing from 1
    month = (month+1)%12;
    month = Math.floor(month/3)
    return seasons[month];
}

var formatPrice = function(price) {
    return (price).toString().replace(/\B(?=(\d{3})+(?!\d))/g, ",") + " Bells";
}

var monthToNum = function(month) {
    return months.indexOf(month.toLowerCase())+1;
}
var numToMonth = function(num) {
    return months[(num-1)%12];
}
var hemiswap = function(month, hemi) {
    if (hemi == "south") {
        return numToMonth(monthToNum(month)+6);
    } else {
        return month;
    }
}
var isRealCritter = function(critter) {
    var type;
    try {
        if (Critters.fishes[critter]) {
            type = "fishes";
        } else if (Critters.bugs[critter]) {
            type = "bugs"
        }
    } catch (error) {
        return false;
    }
    return type;
}
var getByMonth = function(month, hemi, type) {
    if (hemi) {
        month = hemiswap(month, hemi);
    }
    var relevant = [];
    if (type != "bugs") {
        for (let fish in Critters.fishes) {
            if (Critters.fishes[fish][month]) {
                relevant.push(fish);
            }
        }
    }
    if (type != "fishes") {
        for (let bug in Critters.bugs) {
            if(Critters.bugs[bug][month]) {
                relevant.push(bug);
            }
        }
    }
    return relevant;
}
var nextMonthGone = function(month, hemi, type) {
    if (hemi) {
        month = hemiswap(month, hemi);
    }
    var relevant = [];
    if (type != "bugs") {
        for (let fish in Critters.fishes) {
            if (Critters.fishes[fish][month] && !Critters.fishes[fish][numToMonth(monthToNum(month)+1)]) {
                relevant.push(fish);
            }
        }
    }
    if (type != "fishes") {
        for (let bug in Critters.bugs) {
            if (Critters.bugs[bug][month] && !Critters.bugs[bug][numToMonth(monthToNum(month)+1)]) {
                relevant.push(bug);
            }
        }
    }
    return relevant;
}
var thisMonthNew = function(month, hemi, type) {
    if (hemi) {
        month = hemiswap(month, hemi);
    }
    if (monthToNum(month) == 1) {
        var lastMonth = numToMonth(12);
    } else {
        var lastMonth = numToMonth(monthToNum(month)-1);
    }
    var relevant = [];
    if (type != "bugs") {
        for (let fish in Critters.fishes) {
            if (Critters.fishes[fish][month] && !Critters.fishes[fish][lastMonth]) {
                relevant.push(fish);
            }
        }
    }
    if (type != "fishes") {
        for (let bug in Critters.bugs) {
            if (Critters.bugs[bug][month] && !Critters.bugs[bug][lastMonth]) {
                relevant.push(bug);
            }
        }
    }
    return relevant;
}

/* END Critter math functions */
/* Data handling functions */

var getData = function(type, month) {
    try {
        list[type][month].north.total = getByMonth(month, "north", type);
        list[type][month].north.newest = thisMonthNew(month, "north", type);
        list[type][month].north.leaving = nextMonthGone(month, "north", type);
        list[type][month].south.total = getByMonth(month, "south", type);
        list[type][month].south.newest = thisMonthNew(month, "south", type);
        list[type][month].south.leaving = nextMonthGone(month, "south", type);
    } catch (error) {
        console.error(error);
        console.log("Attempting to write to list."+type+"."+month);
        console.log(JSON.stringify(list));
        console.log(i);
    }
}

/* END data handling functions */
/* Formatting functions */

const tableHeader = '{| class="article-table" style="width: 100%"\n!Name\n!Image\n!Price\n!Location\n!Shadow size\n!Time\n|-\n'
const tableFooter = '|}\n\n'

var createRow = function(name, type) {
    // console.log("Type: "+type+"\nName: "+name);
    critter = Critters[type][name];
    if (type == "fishes") {
        return "| "+critter.name+"\n| [[File:NH-Icon-"+name+".png|64px]]\n| "+formatPrice(critter.price)+"\n| "+critter["location"]+"\n| "+getShadow(critter.shadow)+"\n| "+critter.time+"\n|-\n";
    } else {
        return "| "+critter.name+"\n| [[File:NH-Icon-"+name+".png|64px]]\n| "+formatPrice(critter.price)+"\n| "+critter["location"]+"\n| "+critter.time+"\n|-\n";
    }
}

var createTable = function(input, type) {
    var table = tableHeader;
    for (var i = 0; i < input.length; i++) {
        table = table + createRow(input[i], type);
    }
    table = table + tableFooter;
    return table;
}

var createIntro = function(month, type) {
    if (type == "fishes") {
        return "{{NH}} has a total fish count of 80. In the northern hemisphere, "+getByMonth(month, "north", "fishes").length+" can be caught in "+upFirst(month)+", of which "+thisMonthNew(month, "north", "fishes").length+" are new in "+upFirst(month)+", and "+nextMonthGone(month, "north", "fishes").length+" will leave after "+upFirst(month)+". In the southern hemisphere, "+getByMonth(month, "south", "fishes").length+" can be caught in "+upFirst(month)+", of which "+thisMonthNew(month, "south", "fishes").length+" are new in "+upFirst(month)+", and "+nextMonthGone(month, "south", "fishes").length+" will leave after "+upFirst(month)+".\n\n{{Critter Other Months}}\n\n";
    } else {
        return "{{NH}} has a total bug count of 80. In the northern hemisphere, "+getByMonth(month, "north", "bugs").length+" can be caught in "+upFirst(month)+", of which "+thisMonthNew(month, "north", "bugs").length+" are new in "+upFirst(month)+", and "+nextMonthGone(month, "north", "bugs").length+" will leave after "+upFirst(month)+". In the southern hemisphere, "+getByMonth(month, "south", "bugs").length+" can be caught in "+upFirst(month)+", of which "+thisMonthNew(month, "south", "bugs").length+" are new in "+upFirst(month)+", and "+nextMonthGone(month, "south", "bugs").length+" will leave after "+upFirst(month)+".\n\n{{Critter Other Months}}\n\n";
    }
}

var header = function(txt) {
    return "=== "+txt+" ===\n\n";
}

var createSection = function(month, type, hemi) {
    var section = "== "+upFirst(hemi)+"ern hemisphere ==\n\n"; //create header

    section += header("Available in "+upFirst(month));
    section += createTable(getByMonth(month, hemi, type), type);

    section += header("New in "+upFirst(month));
    section += createTable(thisMonthNew(month, hemi, type), type);

    section += header("Leaving after "+upFirst(month));
    section += createTable(nextMonthGone(month, hemi, type), type);

    return section;
}

var createPage = function(month, type) {
    var page = "";
    page = page + createIntro(month, type);
    page = page + createSection(month, type, "north");
    page = page + createSection(month, type, "south");
    page = page + "[[Category:Guides]]";
    return page;
}

/* END formatting functions */
/* Main loop */

var main = function() {
    list.fishes = {}
    list.bugs = {}
    for (var i = 0; i < months.length; i++) {
        var m = months[i]
        list.fishes[m] = {
            north: {},
            south: {}
        }
        list.bugs[m] = {
            north: {},
            south: {}
        }
        getData("fishes", m);
        getData("bugs", m);

        // April fish list (New Horizons)
        var filename_fish = "./output/"+upFirst(m)+" fish list (New Horizons).txt";
        var filename_bugs = "./output/"+upFirst(m)+" bugs list (New Horizons).txt";

        console.log(filename_fish);
        var page_fish = createPage(m, "fishes");
        var page_bugs = createPage(m, "bugs")

        fs.writeFile(filename_fish, page_fish, (err) => {
            if (err) console.error(err)
        });
        fs.writeFile(filename_bugs, page_bugs, (err) => {
            if (err) console.error(err)
        });
    }
}

main();