const fs = require('fs');

function formatEmoji(emoji) {
    return ('{ name = "' + emoji.name + '", unicode = "' + emoji.unicode + '" }');
}

let text = fs.readFileSync('js/emoji.txt',  'utf-8');
let emojis = {};
let currentEmojis = null;

for (let line of text.split('\n')) {
    if (line.startsWith('#')) {
        if (line.startsWith('# group:')) {
            let name = line.split(':')[1].split(' ')[1].toLowerCase();
            emojis[name] = [];
            currentEmojis = emojis[name];
        }
        continue;
    }

    if (line.length === 0) {
        continue;
    }

    let end = line.split('#')[1];
    let split = end.split(' ');
    let emoji = split[1];
    let name = split.slice(3).join(' ');
    currentEmojis.push({
        name,
        unicode: emoji,
    });
}

delete(emojis.component);

// Generate elm

console.log('module Emoji exposing (..)');
console.log('\n');

console.log('type alias Emoji =');
console.log('    { name : String');
console.log('    , unicode : String');
console.log('    }');
console.log('\n');

console.log('type alias Emojis =');
let first = true;
for (let key in emojis) {
    console.log('    ' + (first ? '{' : ',') + ' ' + key + ' : List Emoji');
    first = false;
}
console.log('    }')
console.log('\n');

console.log('type Category');
first = true;
for (let key in emojis) {
    console.log('    ' + (first ? '=' : '|') + ' ' + key[0].toUpperCase() + key.slice(1).toLowerCase());
    first = false;
}
console.log('\n');

console.log('categories : List Category');
console.log('categories =');
console.log('    [' + Object.keys(emojis).map(x => x[0].toUpperCase() + x.slice(1).toLowerCase()).join(', ') + ']');
console.log('\n');

console.log('categoryEmoji : Category -> Emoji');
console.log('categoryEmoji category =');
console.log('    case category of');

for (let key in emojis) {
    console.log('        ' + key[0].toUpperCase() + key.slice(1).toLowerCase() + ' ->');
    console.log('            ' + formatEmoji(emojis[key][0]) + '\n');
}
console.log();

console.log('getEmojis : Category -> List Emoji')
console.log('getEmojis category =');
console.log('    case category of');

for (let key in emojis) {
    console.log('        ' + key[0].toUpperCase() + key.slice(1).toLowerCase() + ' ->');
    console.log('            emojis.' + key + '\n');
}
console.log();

console.log('emojis : Emojis');
console.log('emojis =');
let first1 = true;

for (let key in emojis) {
    console.log('    ' + (first1 ? '{' : ',') + ' ' + key + ' =');
    let first2 = true;
    for (let emoji of emojis[key]) {
        console.log('        ' + (first2 ? '[' : ',') + ' ' + formatEmoji(emoji));
        first2 = false;
    }
    console.log('        ]');
    first1 = false;
}

console.log('    }');