#!/usr/bin/python
# Imports ----------------------------------------------------------------------
import os, os.path, sys, shutil, re, zipfile, sys, ftplib, time
import appy
from appy.shared import appyPath
from appy.shared.utils import FolderDeleter, LinesCounter
from appy.shared.packaging import Debianizer
from appy.bin.clean import Cleaner
from appy.gen.utils import produceNiceMessage

# ------------------------------------------------------------------------------
versionRex = re.compile('(\d+\.\d+\.\d+)')
distInfo = '''from distutils.core import setup
setup(name = "appy", version = "%s",
      description = "The Appy framework",
      long_description = "Appy builds simple but complex web Python apps.",
      author = "Gaetan Delannay",
      author_email = "gaetan.delannay AT geezteem.com",
      license = "GPL", platforms="all",
      url = 'http://appyframework.org',
      packages = [%s],
      package_data = {'':["*.*"]})
'''
manifestInfo = '''
recursive-include appy/bin *
recursive-include appy/gen *
recursive-include appy/pod *
recursive-include appy/shared *
'''
def askLogin():
    print('Login:')
    login = sys.stdin.readline().strip()
    print('Password:')
    passwd = sys.stdin.readline().strip()
    return (login, passwd)

class FtpFolder:
    '''Represents a folder on a FTP site.'''
    def __init__(self, name):
        self.name = name
        self.parent = None
        self.subFolders = []
        self.files = []
        self.isComplete = False # Is True if all contained files and direct
        # subFolders were analysed.

    def getFullName(self):
        if not self.parent:
            res = '.'
        else:
            res = '%s/%s' % (self.parent.getFullName(), self.name)
        return res
    def addSubFolder(self, subFolder):
        self.subFolders.append(subFolder)
        subFolder.parent = self

    def isFullyComplete(self):
        res = self.isComplete
        for subFolder in self.subFolders:
            res = res and subFolder.isFullyComplete()
        return res

    def getIncompleteSubFolders(self):
        res = []
        for subFolder in self.subFolders:
            if not subFolder.isComplete:
                res.append(subFolder)
            elif not subFolder.isFullyComplete():
                res += subFolder.getIncompleteSubFolders()
        return res

    def __str__(self):
        res = 'Folder %s' % self.getFullName()
        if self.files:
            res += '\nFiles:\n'
            for f in self.files:
                res += '%s\n' % f
        if self.subFolders:
            res += '\nSubFolders:\n'
            for subFolder in self.subFolders:
                res += str(subFolder)
        return res

    def clean(self, site):
        '''Cleans this folder'''
        # First, clean subFolders if they exist
        print('Cleaning %s %d subFolders' % \
              (self.getFullName(), len(self.subFolders)))
        for subFolder in self.subFolders:
            subFolder.clean(site)
            # Remove the subFolder
            site.rmd(subFolder.getFullName())
        # Then, remove the files contained in the folder.
        for f in self.files:
            fileName = '%s/%s' % (self.getFullName(), f)
            site.delete(fileName)
            print('%s removed.' % fileName)

# ------------------------------------------------------------------------------
class AppySite:
    '''Represents the Appy web sie where the project is published.'''
    name = 'appyframework.org'
    textExtensions = ('.htm', '.html', '.css', '.txt')
    def __init__(self):
        # Delete the "egg" folder on not-yet-copied local site.
        eggFolder = '%s/temp/egg' % appyPath
        if os.path.isdir(eggFolder):
            FolderDeleter.delete(eggFolder)
        # Ask user id and password for FTP transfer
        userId, userPassword = askLogin()
        self.site = ftplib.FTP(self.name)
        self.site.login(userId, userPassword)
        self.rootFolder = None # Root folder of appy site ~FtpFolder~
        self.currentFolder = None # Currently visited folder ~FtpFolder~

    def analyseFolderEntry(self, folderEntry):
        '''p_line corresponds to a 'ls' entry.'''
        elems = folderEntry.split(' ')
        elemName = elems[len(elems)-1]
        if (elemName.startswith('.') or elemName.startswith('_')) and \
           (not  elemName.startswith('__init__.py')):
            return
        if elems[0].startswith('d'):
            self.currentFolder.addSubFolder(FtpFolder(elemName))
        else:
            self.currentFolder.files.append(elemName)

    def createFolderProxies(self):
        '''Creates a representation of the FTP folders of the appy site in the
        form of FtpFolder instances.'''
        self.rootFolder = FtpFolder('.')
        self.currentFolder = self.rootFolder
        self.site.dir(self.currentFolder.getFullName(), self.analyseFolderEntry)
        self.rootFolder.isComplete = True
        while not self.rootFolder.isFullyComplete():
            incompleteFolders = self.rootFolder.getIncompleteSubFolders()
            for folder in incompleteFolders:
                self.currentFolder = folder
                self.site.dir(self.currentFolder.getFullName(),
                              self.analyseFolderEntry)
                self.currentFolder.isComplete = True

    def copyFile(self, fileName):
        '''Copies a file on the FTP server.'''
        localFile = file(fileName)
        cmd = 'STOR %s' % fileName
        fileExt = os.path.splitext(fileName)[1]
        if fileExt in self.textExtensions:
            # Make a transfer in text mode
            print('Transfer file %s (text mode)' % fileName)
            self.site.storlines(cmd, localFile)
        else:
            # Make a transfer in binary mode
            print('Transfer file %s (binary mode)' % fileName)
            self.site.storbinary(cmd, localFile)

    def publish(self):
        # Delete the existing content of the distant site
        self.createFolderProxies()
        print('Removing existing data on site...')
        self.rootFolder.clean(self.site)
        curDir = os.getcwd()
        os.chdir('%s/temp' % appyPath)
        for root, dirs, files in os.walk('.'):
            for folder in dirs:
                folderName = '%s/%s' % (root, folder)
                self.site.mkd(folderName)
            for f in files:
                fileName = '%s/%s' % (root, f)
                self.copyFile(fileName)
        os.chdir(curDir)
        self.site.close()

# ------------------------------------------------------------------------------
class Text2Html:
    '''Converts a text file into a HTML file.'''
    def __init__(self, txtFile, htmlFile):
        self.txtFile = file(txtFile)
        self.htmlFile = file(htmlFile, 'w')
    def retainLine(self, line):
        '''Must we dump this line in the result ?'''
        pass
    def getFirstChar(self, line):
        '''Gets the first relevant character of the line. For a TodoConverter
        this is not really the first one because lines taken into account start
        with a 'v' character.'''
        return line[self.firstChar]
    def getCleanLine(self, line, isTitle=False):
        '''Gets the line as it will be inserted in the HTML result: remove some 
        leading and trailing characters.'''
        start = self.firstChar
        if not isTitle:
            start += 1
        return line[start:-1]
    def getProlog(self):
        '''If you want to write a small prolog in the HTML file, you may
           generate it here.'''
        return ''
    def run(self):
        self.htmlFile.write('<html>\n\n<head><title>%s</title></head>\n\n' \
                            '<body>\n' % self.title)
        self.htmlFile.write(self.getProlog())
        inList = False
        for line in self.txtFile:
            if self.retainLine(line):
                firstChar = self.getFirstChar(line)
                if firstChar == '-':
                    if not inList:
                        # Begin a new bulleted list
                        self.htmlFile.write('<ul>\n')
                        inList = True
                    self.htmlFile.write(
                        '<li>%s</li>\n' % self.getCleanLine(line))
                elif firstChar == ' ':
                    pass
                else:
                    # It is a title
                    if inList:
                        self.htmlFile.write('</ul>\n')
                        inList = False
                    self.htmlFile.write(
                        '<h1>%s</h1>\n' % self.getCleanLine(line, True))
        self.htmlFile.write('\n</ul>\n</body>\n</html>')
        self.txtFile.close()
        self.htmlFile.close()

# ------------------------------------------------------------------------------
class Publisher:
    '''Publishes Appy on the web.'''
    pageBody = re.compile('<body.*?>(.*)</body>', re.S)

    def __init__(self):
        self.genFolder = '%s/temp' % appyPath
        self.ftp = None # FTP connection to appyframework.org
        # Retrieve version-related information
        versionFileName = '%s/doc/version.txt' % appyPath
        f = file(versionFileName)
        self.versionShort = f.read().strip()
        # Long version includes release date
        self.versionLong = '%s (%s)' % (self.versionShort,
                                        time.strftime('%Y/%m/%d %H:%M'))
        f.close()
        # In silent mode (option -s), no question is asked, default answers are
        # automatically given.
        if (len(sys.argv) > 1) and (sys.argv[1] == '-s'):
            self.silent = True
        else:
            self.silent = False

    def askQuestion(self, question, default='yes'):
        '''Asks a question to the user (yes/no) and returns True if the user
            answered "yes".'''
        if self.silent: return (default == 'yes')
        defaultIsYes = (default.lower() in ('y', 'yes'))
        if defaultIsYes:
            yesNo = '[Y/n]'
        else:
            yesNo = '[y/N]'
        print(question + ' ' + yesNo + ' ')
        response = sys.stdin.readline().strip().lower()
        res = False
        if response in ('y', 'yes'):
            res = True
        elif response in ('n', 'no'):
            res = False
        elif not response:
            # It depends on default value
            if defaultIsYes:
                res = True
            else:
                res = False
        return res

    def executeCommand(self, cmd):
        '''Executes the system command p_cmd.'''
        print('Executing %s...' % cmd)
        os.system(cmd)

    distExcluded = ('appy/doc', 'appy/temp', 'appy/versions', 'appy/gen/test')
    def isDistExcluded(self, name):
        '''Returns True if folder named p_name must be included in the
           distribution.'''
        if '.bzr' in name: return True
        for prefix in self.distExcluded:
            if name.startswith(prefix): return True

    def createDebianRelease(self):
        '''Creates a Debian package for Appy.'''
        j = os.path.join
        sign = self.askQuestion('Sign the Debian package?', default='no')
        Debianizer(j(self.genFolder, 'appy'), j(appyPath, 'versions'),
                   appVersion=self.versionShort, depends=[], sign=sign).run()

    def createDistRelease(self):
        '''Create the distutils package.'''
        curdir = os.getcwd()
        distFolder = '%s/dist' % self.genFolder
        # Create setup.py
        os.mkdir(distFolder)
        f = file('%s/setup.py' % distFolder, 'w')
        # List all packages to include
        packages = []
        os.chdir(os.path.dirname(appyPath))
        for dir, dirnames, filenames in os.walk('appy'):
            if self.isDistExcluded(dir): continue
            packageName = dir.replace('/', '.')
            packages.append('"%s"' % packageName)
        f.write(distInfo % (self.versionShort, ','.join(packages)))
        f.close()
        # Create MANIFEST.in
        f = file('%s/MANIFEST.in' % distFolder, 'w')
        f.write(manifestInfo)
        f.close()
        # Move appy sources within the dist folder
        os.rename('%s/appy' % self.genFolder, '%s/appy' % distFolder)
        # Create the source distribution
        os.chdir(distFolder)
        self.executeCommand('python setup.py sdist')
        # DistUtils has created the .tar.gz file. Move it to folder "versions"
        name = 'appy-%s.tar.gz' % self.versionShort
        os.rename('%s/dist/%s' % (distFolder, name),
                  '%s/versions/%s' % (appyPath, name))
        os.rmdir('%s/dist' % distFolder)
        # Upload the package on Pypi?
        if self.askQuestion('Upload %s on PyPI?' % name, default='no'):
            self.executeCommand('python setup.py sdist upload')
        # Clean temp files
        os.chdir(curdir)
        # Keep the Appy source for building the Debian package afterwards
        os.rename(os.path.join(self.genFolder, 'dist', 'appy'), \
                  os.path.join(self.genFolder, 'appy'))
        FolderDeleter.delete(os.path.join(self.genFolder, 'dist'))

    def createZipRelease(self):
        '''Creates a zip file with the appy sources.'''
        newZipRelease = '%s/versions/appy-%s.zip' % (appyPath,self.versionShort)
        if os.path.exists(newZipRelease):
            if not self.askQuestion('"%s" already exists. Replace it?' % \
                                    newZipRelease, default='yes'):
                print('Publication canceled.')
                sys.exit(1)
            print('Removing obsolete %s...' % newZipRelease)
            os.remove(newZipRelease)
        zipFile = zipfile.ZipFile(newZipRelease, 'w', zipfile.ZIP_DEFLATED)
        curdir = os.getcwd()
        os.chdir(self.genFolder)
        for dir, dirnames, filenames in os.walk('appy'):
            for f in filenames:
                fileName = os.path.join(dir, f)
                zipFile.write(fileName)
                # [2:] is there to avoid havin './' in the path in the zip file.
        zipFile.close()
        os.chdir(curdir)

    def applyTemplate(self):
        '''Decorates each page with the template.'''
        # First, load the template into memory
        templateFileName = '%s/doc/template.html' % appyPath
        templateFile = open(templateFileName)
        templateContent = templateFile.read()
        templateFile.close()
        # Then, decorate each other html file
        for pageName in os.listdir(self.genFolder):
            if pageName.endswith('.html'):
                pageFileName = '%s/%s' % (self.genFolder, pageName)
                pageFile = file(pageFileName)
                pageContent = pageFile.read()
                pageFile.close()
                # Extract the page title (excepted for the main page, we don't
                # need this title, to save space.
                pageTitle = ''
                if pageName != 'index.html':
                    i, j = pageContent.find('<title>'), \
                           pageContent.find('</title>')
                    pageTitle = '<tr><td align="center" style="padding: 10px; '\
                                'font-size:150%%; border-bottom: 1px black ' \
                                'dashed">%s</td></tr>' % pageContent[i+7:j]
                # Extract the body tag content from the page
                pageContent = self.pageBody.search(pageContent).group(1)
                pageFile = open(pageFileName, 'w')
                templateWithTitle = templateContent.replace('{{ title }}',
                                                            pageTitle)
                pageFile.write(templateWithTitle.replace('{{ content }}',
                                                         pageContent))
                pageFile.close()

    def _getPageTitle(self, url):
        '''Returns the documentation page title from its URL.'''
        res = url.split('.')[0]
        if res not in ('pod', 'gen'):
            res = produceNiceMessage(res[3:])
        return res

    mainToc = re.compile('<span class="doc">(.*?)</span>', re.S)
    tocLink = re.compile('<a href="(.*?)">(.*?)</a>')
    subSection = re.compile('<h1>(.*?)</h1>')
    subSectionContent = re.compile('<a name="(.*?)">.*?</a>(.*)')
    def createDocToc(self):
        res = '<table width="100%"><tr valign="top">'
        docToc = '%s/docToc.html' % self.genFolder
        # First, parse template.html to get the main TOC structure
        template = file('%s/doc/template.html' % appyPath)
        mainData = self.mainToc.search(template.read()).group(0)
        links = self.tocLink.findall(mainData)
        sectionNb = 0
        for url, title in links:
            if title in ('appy.gen', 'appy.pod'):
                tag = 'h1'
                indent = 0
                styleBegin = ''
                styleEnd = ''
                if title == 'pod':
                    res += '</td>'
                res += '<td>'
            else:
                tag = 'p'
                indent = 2
                styleBegin = '<i>'
                styleEnd = '</i>'
            tabs = '&nbsp;' * indent * 2
            res += '<%s>%s%s<a href="%s">%s</a>%s</%s>\n' % \
                   (tag, tabs, styleBegin, url, self._getPageTitle(url),
                    styleEnd, tag)
            # Parse each HTML file and retrieve sections title that have an
            # anchor defined
            docFile = file('%s/doc/%s' % (appyPath, url))
            docContent = docFile.read()
            docFile.close()
            sections = self.subSection.findall(docContent)
            for section in sections:
                r = self.subSectionContent.search(section)
                if r:
                    sectionNb += 1
                    tabs = '&nbsp;' * 8
                    res += '<div>%s%d. <a href="%s#%s">%s</a></div>\n' % \
                           (tabs, sectionNb, url, r.group(1), r.group(2))
        res += '</td></tr></table>'
        f = file(docToc)
        toc = f.read()
        f.close()
        toc = toc.replace('{{ doc }}', res)
        f = file(docToc, 'w')
        f.write(toc)
        f.close()

    privateScripts = ('publish.py', 'zip.py', 'startoo')
    def prepareGenFolder(self, minimalist=False):
        '''Creates the basic structure of the temp folder where the appy
           website will be generated.'''
        # Reinitialise temp folder where the generated website will be dumped
        if os.path.exists(self.genFolder):
            FolderDeleter.delete(self.genFolder)
        shutil.copytree('%s/doc' % appyPath, self.genFolder)
        # Copy appy.css from gen, with minor updates.
        f = file('%s/gen/ui/appy.css' % appyPath)
        css = f.read().replace('ui/li.gif', 'img/li.gif')
        f.close()
        f = file('%s/appy.css' % self.genFolder, 'w')
        f.write(css)
        f.close()
        shutil.copy('%s/gen/ui/li.gif' % appyPath, '%s/img' % self.genFolder)
        # Create a temp clean copy of appy sources (without .svn folders, etc)
        genSrcFolder = '%s/appy' % self.genFolder
        os.mkdir(genSrcFolder)
        for aFile in ('__init__.py',):
            shutil.copy('%s/%s' % (appyPath, aFile), genSrcFolder)
        for aFolder in ('bin', 'gen', 'pod', 'px', 'shared'):
            shutil.copytree('%s/%s' % (appyPath, aFolder),
                            '%s/%s' % (genSrcFolder, aFolder))
        # Remove some scripts from bin
        for script in self.privateScripts:
            os.remove('%s/bin/%s' % (genSrcFolder, script))
        if minimalist:
            FolderDeleter.delete('%s/pod/test' % genSrcFolder)
        # Write the appy version into the code itself (in appy/version.py)'''
        print('Publishing version %s...' % self.versionShort)
        # Dump version info in appy/version.py
        f = file('%s/version.py' % genSrcFolder, 'w')
        f.write('short = "%s"\n' % self.versionShort)
        f.write('verbose = "%s"' % self.versionLong)
        f.close()
        # Remove unwanted files
        os.remove('%s/version.txt' % self.genFolder)
        os.remove('%s/license.txt' % self.genFolder)
        os.remove('%s/template.html' % self.genFolder)
        os.remove('%s/artwork.odg' % self.genFolder)
        # Remove subversion folders
        for root, dirs, files in os.walk(self.genFolder):
            for dirName in dirs:
                if dirName == '.svn':
                    FolderDeleter.delete(os.path.join(root, dirName))

    def run(self):
        Cleaner().run(verbose=False)
        # Perform a small analysis on the Appy code
        LinesCounter(appy).run()
        print('Generating site in %s...' % self.genFolder)
        minimalist = self.askQuestion('Minimalist (shipped without tests)?',
                                      default='no')
        self.prepareGenFolder(minimalist)
        self.createDocToc()
        self.applyTemplate()
        self.createZipRelease()
        self.createDistRelease()
        self.createDebianRelease()
        # Remove folder 'appy', in order to avoid copying it on the website
        FolderDeleter.delete(os.path.join(self.genFolder, 'appy'))
        if self.askQuestion('Publish on appyframework.org?', default='no'):
            AppySite().publish()
        if self.askQuestion('Delete locally generated site ?', default='no'):
            FolderDeleter.delete(self.genFolder)

# ------------------------------------------------------------------------------
if __name__ == '__main__':
    Publisher().run()
# ------------------------------------------------------------------------------