'use strict';

var test = require('tap').test,
  documentation = require('../'),
  outputMarkdown = require('../lib/output/markdown.js'),
  outputMarkdownAST = require('../lib/output/markdown_ast.js'),
  outputHtml = require('../lib/output/html.js'),
  normalize = require('./normalize'),
  glob = require('glob'),
  path = require('path'),
  fs = require('fs'),
  chdir = require('chdir');

var UPDATE = !!process.env.UPDATE;

function makePOJO(ast) {
  return JSON.parse(JSON.stringify(ast));
}

if (fs.existsSync(path.join(__dirname, '../.git'))) {
  test('git option', function (t) {
    var file = path.join(__dirname, './fixture/simple.input.js');
    documentation([file], { github: true }, function (err, result) {
      t.ifError(err);
      normalize(result);
      var outputfile = file.replace('.input.js', '.output.github.json');
      if (UPDATE) {
        fs.writeFileSync(outputfile, JSON.stringify(result, null, 2));
      }
      var expect = require(outputfile);
      t.deepEqual(result, expect, 'produces correct JSON');

      outputMarkdown(result, null, function (err, result) {
        t.ifError(err);
        var outputfile = file.replace('.input.js', '.output.github.md');
        if (UPDATE) {
          fs.writeFileSync(outputfile, result, 'utf8');
        }
        var expect = fs.readFileSync(outputfile, 'utf8');
        t.equal(result.toString(), expect, 'markdown output correct');
        t.end();
      });
    });
  });
}

test('external modules option', function (t) {
  documentation([
    path.join(__dirname, 'fixture', 'external.input.js')
  ], {
    external: '(external|external/node_modules/*)'
  }, function (err, result) {
    t.ifError(err);
    normalize(result);
    var outputfile = path.join(__dirname, 'fixture', '_external-deps-included.json');
    if (UPDATE) {
      fs.writeFileSync(outputfile, JSON.stringify(result, null, 2));
    }
    var expect = require(outputfile);
    t.deepEqual(result, expect);
    t.end();
  });
});

test('bad input', function (tt) {
  glob.sync(path.join(__dirname, 'fixture/bad', '*.input.js')).forEach(function (file) {
    tt.test(path.basename(file), function (t) {
      documentation([file], null, function (error, res) {
        t.equal(res, undefined);
        // make error a serializable object
        error = JSON.parse(JSON.stringify(error));
        // remove system-specific path
        delete error.filename;
        delete error.codeFrame;
        var outputfile = file.replace('.input.js', '.output.json');
        if (UPDATE) {
          fs.writeFileSync(outputfile, JSON.stringify(error, null, 2));
        }
        var expect = JSON.parse(fs.readFileSync(outputfile));
        t.deepEqual(error, expect);
        t.end();
      });
    });
  });
  tt.end();
});

test('html', function (tt) {
  glob.sync(path.join(__dirname, 'fixture/html', '*.input.js')).forEach(function (file) {
    tt.test(path.basename(file), function (t) {
      documentation([file], null, function (err, result) {
        t.ifError(err);
        outputHtml(result, null, function (err, result) {
          t.ifError(err);
          var clean = result.sort(function (a, b) {
            return a.path > b.path;
          }).filter(function (r) {
            return r.path.match(/(html)$/);
          }).map(function (r) {
            return r.contents;
          }).join('\n');
          var outputfile = file.replace('.input.js', '.output.files');
          if (UPDATE) {
            fs.writeFileSync(outputfile, clean, 'utf8');
          }
          var expect = fs.readFileSync(outputfile, 'utf8');
          t.deepEqual(clean, expect);
          t.end();
        });
      });
    });
  });
  tt.end();
});

test('outputs', function (ttt) {
  glob.sync(path.join(__dirname, 'fixture', '*.input.js')).forEach(function (file) {
    ttt.test(path.basename(file), function (tt) {
      documentation([file], null, function (err, result) {
        tt.ifError(err);

        tt.test('markdown', function (t) {
          outputMarkdown(result, null, function (err, result) {
            t.ifError(err);
            var outputfile = file.replace('.input.js', '.output.md');
            if (UPDATE) {
              fs.writeFileSync(outputfile, result, 'utf8');
            }
            var expect = fs.readFileSync(outputfile, 'utf8');
            t.equal(result.toString(), expect, 'markdown output correct');
            t.end();
          });
        });

        tt.test('markdown AST', function (t) {
          outputMarkdownAST(result, null, function (err, result) {
            t.ifError(err);
            var outputfile = file.replace('.input.js', '.output.md.json');
            if (UPDATE) {
              fs.writeFileSync(outputfile, JSON.stringify(result, null, 2), 'utf8');
            }
            var expect = JSON.parse(fs.readFileSync(outputfile, 'utf8'));
            t.deepEqual(result, expect, 'markdown AST output correct');
            t.end();
          });
        });

        tt.test('JSON', function (t) {
          normalize(result);
          var outputfile = file.replace('.input.js', '.output.json');
          if (UPDATE) {
            fs.writeFileSync(outputfile, JSON.stringify(result, null, 2));
          }
          var expect = require(outputfile);
          t.deepEqual(makePOJO(result), expect);
          t.end();
        });

        tt.end();
      });
    });
  });
  ttt.end();
});

test('highlightAuto md output', function (t) {
  var file = path.join(__dirname, 'fixture/auto_lang_hljs/multilanguage.input.js'),
    hljsConfig = {hljs: {highlightAuto: true, languages: ['js', 'css', 'html']}};

  documentation(file, null, function (err, result) {
    t.ifError(err);
    outputMarkdown(result, hljsConfig, function (err, result) {
      t.ifError(err);
      var outputfile = file.replace('.input.js', '.output.md');
      if (UPDATE) {
        fs.writeFileSync(outputfile, result, 'utf8');
      }
      var expect = fs.readFileSync(outputfile, 'utf8');
      t.equal(result.toString(), expect, 'recognizes examples in html, css and js');
      t.end();
    });
  });
});

test('multi-file input', function (t) {
  documentation([
    path.join(__dirname, 'fixture', 'simple.input.js'),
    path.join(__dirname, 'fixture', 'simple-two.input.js')
  ], null, function (err, result) {
    t.ifError(err);
    normalize(result);
    var outputfile = path.join(__dirname, 'fixture', '_multi-file-input.json');
    if (UPDATE) {
      fs.writeFileSync(outputfile, JSON.stringify(result, null, 2));
    }
    var expect = require(outputfile);
    t.deepEqual(result, expect);
    t.end();
  });
});

test('accepts simple relative paths', function (t) {
  chdir(__dirname, function () {
    documentation('fixture/simple.input.js', null, function (err, data) {
      t.ifError(err);
      t.equal(data.length, 1, 'simple has no dependencies');
      t.end();
    });
  });
});

test('.lint', function (t) {
  chdir(__dirname, function () {
    documentation.lint('fixture/simple.input.js', null, function (err, data) {
      t.ifError(err);
      t.equal(data, '', 'outputs lint information');
      t.end();
    });
  });
});

test('.lint with bad input', function (t) {
  chdir(__dirname, function () {
    documentation.lint('fixture/bad/syntax.input.js', null, function (err, data) {
      t.ok(err, 'returns an error when syntax is incorrect');
      t.end();
    });
  });
});