"use strict";

var _ = require("lodash");

var diffParse = require("diff-parse");

module.exports = parseDiff;

function parseDiff (string) {

var parsed = diffParse(string);

// FIX a bug in line numbers, seems to somehow not detect chunk and calculate lines like a drunk monkey then

// I will suppose it still outputs lines in valid order, and rely on that

return _.map(parsed, fixParsedDiff);

}

function fixParsedDiff (file) {

if (file.lines[0].content[0] === "@" && !file.lines[0].chunk) {

// Buggy

file.lines = _.map(file.lines, fixDiffLine);

}

return file;

}

function fixDiffLine (line, index) {

if (index === 0) {

if (line.content[0] === "@" && !line.chunk) {

line.type = "chunk";

line.chunk = true;

}

} else {

line.ln = index;

}

return line;

}