var util = require("util");
var path = require("path");
var Q = require("q");
var swig = require('swig');

var fs = require("./fs");
var parse = require("../parse");
var BaseGenerator = require("./generator");

// Swig filter for returning the count of lines in a code section
swig.setFilter('lines', function(content) {
    return content.split('\n').length;
});

// Swig filter for returning a link to the associated html file of a markdown file
swig.setFilter('mdLink', function(link) {
    return link.replace(".md", ".html");
});

var Generator = function() {
    BaseGenerator.apply(this, arguments);

    // Load base template
    this.template = swig.compileFile(path.resolve(__dirname, '../../templates/page.html'));
};
util.inherits(Generator, BaseGenerator);


// Convert a markdown file to html
Generator.prototype.convertFile = function(content, _input) {
    var that = this;
    var progress = parse.progress(this.options.navigation, _input);

    _output = _input.replace(".md", ".html");

    var input = path.join(this.options.input, _input);
    var output = path.join(this.options.output, _output);
    var basePath = path.relative(path.dirname(output), this.options.output) || ".";
    
    return Q()
    .then(function() {
        return parse.page(content, {
            repo: that.options.githubId,
            dir: path.dirname(input) || '/'
        });
    })
    .then(function(sections) {
        return that.template({
            title: that.options.title,
            description: that.options.description,

            githubAuthor: that.options.github.split("/")[0],
            githubId: that.options.github,
            githubHost: that.options.githubHost,

            summary: that.options.summary,
            allNavigation: that.options.navigation,
            progress: progress,

            _input: _input,
            content: sections,

            basePath: basePath,
            staticBase: path.join(basePath, "gitbook"),
        });
    })
    .then(function(html) {
        return fs.writeFile(
            output,
            html
        );
    });
};

// Symlink index.html and copy assets
Generator.prototype.finish = function() {
    var that = this;

    return fs.symlink(
        path.join(that.options.output, 'README.html'),
        path.join(that.options.output, 'index.html')
    )
    .then(function() {
        return fs.copy(
            path.join(__dirname, "../../assets/static"),
            path.join(that.options.output, "gitbook")
        );
    });
};

module.exports = Generator;
@@ -1196,20 +1196,16 @@
 %7C%7C %22.%22;%0A
-    
 %0A    ret
@@ -2230,39 +2230,8 @@
     
- path.join(that.options.output,
  'RE
@@ -2240,17 +2240,16 @@
 ME.html'
-)
 ,%0A      

Use relative symlink between index & README