import os

class DisplayHTMLRaw(object):

    def __init__(self, html=''):
        self.html = html

    def setRawHTML(self, html):
        self.html = html

    def _build(self, f, html):
        if html: f.write(html)
        
    def build(self, f):
        self._build(self.html)

class DisplayHTMLBlock(DisplayHTMLRaw):

    def __init__(self, title=''):
        super(DisplayHTMLBlock, self).__init__(html='')
        self.title = title
        self.cssclass = 'iwla_block'
        self.title_cssclass = 'iwla_block_title'
        self.value_cssclass = 'iwla_block_value'

    def getTitle(self):
        return self.title

    def setTitle(self, value):
        self.title = value
        
    def setCSSClass(self, cssclass):
        self.cssclass = cssclass

    def setTitleCSSClass(self, cssclass):
        self.title_cssclass = cssclass

    def setValueCSSClass(self, cssclass):
        self.value_cssclass = cssclass

    def build(self, f):
        html = '<div class="%s">' % (self.cssclass)
        if self.title:
            html += '<div class="%s">%s</div>' % (self.title_cssclass, self.title)
        html += '<div class="%s">%s</div>' % (self.value_cssclass, self.html)
        html += '</div>'

        self._build(f, html)

class DisplayHTMLBlockTable(DisplayHTMLBlock):
    
    def __init__(self, title, cols):
        super(DisplayHTMLBlockTable, self).__init__(title=title)
        self.cols = cols
        self.rows = []
        self.cols_cssclasses = ['' for e in cols]
        self.rows_cssclasses = []

    def appendRow(self, row):
        self.rows.append(listToStr(row))
        self.rows_cssclasses.append(['' for e in row])

    def getCellValue(self, row, col):
        if row < 0 or col < 0 or\
           row >= len(self.rows) or col >= len(self.cols):
            raise ValueError('Invalid indices %d,%d' % (row, col))

        return self.rows[row][col]

    def setCellValue(self, row, col, value):
        if row < 0 or col < 0 or\
           row >= len(self.rows) or col >= len(self.cols):
            raise ValueError('Invalid indices %d,%d' % (row, col))

        return self.rows[row][col]

    def setCellCSSClass(self, row, col, value):
        if row < 0 or col < 0 or\
           row >= len(self.rows) or col >= len(self.cols):
            raise ValueError('Invalid indices %d,%d' % (row, col))

        self.rows_cssclasses[row][col] = value

    def getCellCSSClass(self, row, col):
        if row < 0 or col < 0 or\
           row >= len(self.rows) or col >= len(self.cols):
            raise ValueError('Invalid indices %d,%d' % (row, col))

        return self.rows_cssclasses[row][col]

    def getColCSSClass(self, col):
        if col < 0 or col >= len(self.cols):
            raise ValueError('Invalid indice %d' % (col))

        return self.cols_cssclasses[col]

    def setRowCSSClass(self, row, value):
        if row < 0 or row >= len(self.rows):
            raise ValueError('Invalid indice %d' % (row))

        for i in range(0, self.rows_cssclasses[row]):
            self.rows_cssclasses[row][i] = value

    def setColCSSClass(self, col, value):
        if col < 0 or col >= len(self.cols):
            raise ValueError('Invalid indice %d' % (col))

        self.cols_cssclasses[col] = value

    def setColsCSSClass(self, values):
        if len(values) != len(self.cols):
            raise ValueError('Invalid values size')

        self.cols_cssclasses = values

    def build(self, f):
        if not self.html:
            html = '<table>'
            if self.cols:
                html += '<tr>'
                for i in range (0, len(self.cols)):
                    title = self.cols[i]
                    style = self.getColCSSClass(i)
                    if style: style = ' class="%s"' % (style)
                    html += '<th%s>%s</th>' % (style, title)
                html += '</tr>'
            for i in range(0, len(self.rows)):
                row = self.rows[i]
                html += '<tr>'
                for j in range(0, len(row)):
                    v = row[j]
                    style = self.getCellCSSClass(i, j)
                    if style: style = ' class="%s"' % (style)
                    html += '<td%s>%s</td>' % (style, v)
                html += '</tr>'
            html += '</table>'
            self.html = html

        super(DisplayHTMLBlockTable, self).build(f)

class DisplayHTMLPage(object):

    def __init__(self, title, filename, css_path):
        self.title = title
        self.filename = filename
        self.blocks = []
        self.css_path = css_path

    def getFilename(self):
        return self.filename;

    def getBlock(self, title):
        for b in self.blocks:
            if title == b.getTitle():
                return b
        return None
    
    def appendBlock(self, block):
        self.blocks.append(block)

    def build(self, root):
        filename = root + self.filename

        base = os.path.dirname(filename)
        if not os.path.exists(base):
            os.makedirs(base)

        f = open(filename, 'w')
        f.write('<!DOCTYPE html>')
        f.write('<html>')
        f.write('<head>')
        f.write('<meta http-equiv="Content-type" content="text/html; charset=UTF-8" />')
        for css in self.css_path:
            f.write('<link rel="stylesheet" href="%s"/>' % (css))
        if self.title:
            f.write('<title>%s</title>' % (self.title))
        f.write('</head>')
        for block in self.blocks:
            block.build(f)
        f.write('</body></html>')
        f.close()

class DisplayHTMLBuild(object):

    def __init__(self, iwla):
        self.pages = []
        self.iwla = iwla

    def getPage(self, filename):
        for page in self.pages:
            if page.getFilename() == filename:
                return page
        return None

    def addPage(self, page):
        self.pages.append(page)

    def build(self, root):
        display_root = self.iwla.getConfValue('DISPLAY_ROOT', '')
        for res_path in self.iwla.getResourcesPath():
            target = os.path.abspath(res_path)
            link_name = os.path.join(display_root, res_path)
            if not os.path.exists(link_name):
                os.symlink(target, link_name)

        for page in self.pages:
            page.build(root)

def bytesToStr(bytes):
    suffixes = ['', ' kB', ' MB', ' GB', ' TB']

    for i in range(0, len(suffixes)):
        if bytes < 1024: break
        bytes /= 1024.0

    if i:
        return '%.02f%s' % (bytes, suffixes[i])
    else:
        return '%d%s' % (bytes, suffixes[i])

def _toStr(v):
    if type(v) != str: return str(v)
    else: return v

def listToStr(l): return map(lambda(v) : _toStr(v), l)