var fs = require('fs');
var path = require('path');

function walkDir(dir, callback) {
    fs.readdirSync(dir).forEach(function(f) {
        var p = path.join(dir, f);
        if (fs.statSync(p).isDirectory()) walkDir(p, callback);
        else if (p.endsWith('.css')) callback(p);
    });
}

var replacements = [
    [/230, 240, 251/g, '255, 240, 230'],
    [/186, 213, 245/g, '255, 208, 179'],
    [/141, 187, 239/g, '255, 179, 128'],
    [/97, 160, 232/g,  '255, 122, 51'],
    [/52, 133, 226/g,  '255, 69, 0'],
    [/28, 108, 199/g,  '224, 61, 0'],
    [/22, 83, 154/g,   '179, 49, 0'],
    [/16, 59, 109/g,   '138, 38, 0'],
    [/9, 35, 65/g,     '97, 26, 0'],
    [/#e6f0fb/gi, '#FFF0E6'],
    [/#bad5f5/gi, '#FFD0B3'],
    [/#8dbbef/gi, '#FFB380'],
    [/#61a0e8/gi, '#FF7A33'],
    [/#3485e2/gi, '#FF4500'],
    [/#1c6cc7/gi, '#E03D00'],
    [/#16539a/gi, '#B33100'],
    [/#103b6d/gi, '#8A2600'],
    [/#092341/gi, '#611A00'],
    [/31, 41, 55/g, '52, 53, 56'],
    [/#1f2937/gi, '#343538'],
];

var distDir = 'dist';
if (!fs.existsSync(distDir)) {
    distDir = '.';
}

var count = 0;
walkDir(distDir, function(filePath) {
    var content = fs.readFileSync(filePath, 'utf8');
    var original = content;
    replacements.forEach(function(r) {
        content = content.replace(r[0], r[1]);
    });
    if (content !== original) {
        fs.writeFileSync(filePath, content);
        console.log('Patched: ' + filePath);
        count++;
    }
});

console.log('Patched ' + count + ' CSS files');