__filename__ = "theme.py"
__author__ = "Bob Mottram"
__license__ = "AGPL3+"
__version__ = "1.1.0"
__maintainer__ = "Bob Mottram"
__email__ = "bob@freedombone.net"
__status__ = "Production"

import os
from utils import loadJson
from utils import saveJson


def setThemeInConfig(baseDir: str, name: str) -> bool:
    configFilename = baseDir + '/config.json'
    if not os.path.isfile(configFilename):
        return False
    configJson = loadJson(configFilename, 0)
    if not configJson:
        return False
    configJson['theme'] = name
    return saveJson(configJson, configFilename)


def getTheme(baseDir: str) -> str:
    configFilename = baseDir + '/config.json'
    if os.path.isfile(configFilename):
        configJson = loadJson(configFilename, 0)
        if configJson:
            if configJson.get('theme'):
                return configJson['theme']
    return 'default'


def removeTheme(baseDir: str):
    themeFiles = ('epicyon.css', 'login.css', 'follow.css',
                  'suspended.css', 'calendar.css', 'blog.css')
    for filename in themeFiles:
        if os.path.isfile(baseDir + '/' + filename):
            os.remove(baseDir + '/' + filename)


def setThemeDefault(baseDir: str):
    removeTheme(baseDir)
    setThemeInConfig(baseDir, 'default')


def setCSSparam(css: str, param: str, value: str) -> str:
    """Sets a CSS parameter to a given value
    """
    # is this just a simple string replacement?
    if ';' in param:
        return css.replace(param, value)
    # color replacement
    if param.startswith('rgba('):
        return css.replace(param, value)
    # if the parameter begins with * then don't prepend --
    if param.startswith('*'):
        searchStr = param.replace('*', '') + ':'
    else:
        searchStr = '--' + param + ':'
    if searchStr not in css:
        return css
    s = css.split(searchStr)
    newcss = ''
    for sectionStr in s:
        if not newcss:
            if sectionStr:
                newcss = sectionStr
            else:
                newcss = ' '
        else:
            if ';' in sectionStr:
                newcss += \
                    searchStr + ' ' + value + ';' + sectionStr.split(';', 1)[1]
            else:
                newcss += searchStr + ' ' + sectionStr
    return newcss.strip()


def setThemeFromDict(baseDir: str, name: str, themeParams: {}):
    """Uses a dictionary to set a theme
    """
    setThemeInConfig(baseDir, name)
    themeFiles = ('epicyon.css', 'login.css', 'follow.css',
                  'suspended.css', 'calendar.css', 'blog.css')
    for filename in themeFiles:
        templateFilename = baseDir + '/epicyon-' + filename
        if filename == 'epicyon.css':
            templateFilename = baseDir + '/epicyon-profile.css'
        if not os.path.isfile(templateFilename):
            continue
        with open(templateFilename, 'r') as cssfile:
            css = cssfile.read()
            for paramName, paramValue in themeParams.items():
                css = setCSSparam(css, paramName, paramValue)
            filename = baseDir + '/' + filename
            with open(filename, 'w') as cssfile:
                cssfile.write(css)


def setCustomFont(baseDir: str):
    """Uses a dictionary to set a theme
    """
    customFontExt = None
    customFontType = None
    fontExtension = {
        'woff': 'woff',
        'woff2': 'woff2',
        'otf': 'opentype',
        'ttf': 'truetype'
    }
    for ext, extType in fontExtension.items():
        filename = baseDir + '/fonts/custom.' + ext
        if os.path.isfile(filename):
            customFontExt = ext
            customFontType = extType
    if not customFontExt:
        return

    themeFiles = ('epicyon.css', 'login.css', 'follow.css',
                  'suspended.css', 'calendar.css', 'blog.css')
    for filename in themeFiles:
        templateFilename = baseDir + '/' + filename
        if not os.path.isfile(templateFilename):
            continue
        with open(templateFilename, 'r') as cssfile:
            css = cssfile.read()
            css = \
                setCSSparam(css, "*src",
                            "url('./fonts/custom." +
                            customFontExt +
                            "') format('" +
                            customFontType + "')")
            css = setCSSparam(css, "*font-family", "'CustomFont'")
            filename = baseDir + '/' + filename
            with open(filename, 'w') as cssfile:
                cssfile.write(css)


def setThemeHighVis(baseDir: str):
    themeParams = {
        "font-size-header": "22px",
        "font-size": "45px",
        "font-size2": "45px",
        "font-size3": "45px",
        "font-size4": "35px",
        "font-size5": "29px",
        "gallery-font-size": "35px",
        "gallery-font-size-mobile": "55px"
    }
    setThemeFromDict(baseDir, 'highvis', themeParams)


def setThemePurple(baseDir: str):
    themeParams = {
        "main-bg-color": "#1f152d",
        "main-bg-color-reply": "#1a142d",
        "main-bg-color-report": "#12152d",
        "main-header-color-roles": "#1f192d",
        "main-fg-color": "#f98bb0",
        "border-color": "#3f2145",
        "main-link-color": "#ff42a0",
        "main-visited-color": "#f93bb0",
        "button-selected": "#c042a0",
        "button-background": "#ff42a0",
        "button-text": "white",
        "background-color: #554;": "background-color: #ff42a0;",
        "color: #FFFFFE;": "color: #1f152d;",
        "calendar-bg-color": "#eee",
        "lines-color": "#ff42a0",
        "day-number": "#3f2145",
        "day-number2": "#1f152d",
        "time-color": "#ff42a0",
        "place-color": "black",
        "event-color": "#282c37",
        "today-foreground": "white",
        "today-circle": "red",
        "event-background": "yellow",
        "event-foreground": "white",
        "title-text": "white",
        "title-background": "#ff42a0",
        "gallery-text-color": "#ccc"
    }
    setThemeFromDict(baseDir, 'purple', themeParams)


def setThemeHacker(baseDir: str):
    themeParams = {
        "main-bg-color": "black",
        "main-bg-color-reply": "#030202",
        "main-bg-color-report": "#050202",
        "main-header-color-roles": "#1f192d",
        "main-fg-color": "#00ff00",
        "border-color": "#035103",
        "main-link-color": "#2fff2f",
        "main-visited-color": "#3c8234",
        "button-selected": "#063200",
        "button-background": "#062200",
        "button-text": "#00ff00",
        "button-corner-radius": "4px",
        "timeline-border-radius": "4px",
        "*font-family": "'Bedstead'",
        "*src": "url('./fonts/bedstead.otf') format('opentype')",
        "background-color: #554;": "background-color: #062200;",
        "color: #FFFFFE;": "color: green;",
        "calendar-bg-color": "black",
        "lines-color": "green",
        "day-number": "green",
        "day-number2": "darkgreen",
        "time-color": "darkgreen",
        "place-color": "green",
        "event-color": "green",
        "today-foreground": "white",
        "today-circle": "red",
        "event-background": "lightgreen",
        "event-foreground": "black",
        "title-text": "black",
        "title-background": "darkgreen",
        "gallery-text-color": "green"
    }
    setThemeFromDict(baseDir, 'hacker', themeParams)


def setThemeLight(baseDir: str):
    themeParams = {
        "rgba(0, 0, 0, 0.5)": "rgba(0, 0, 0, 0.0)",
        "main-bg-color": "#e6ebf0",
        "main-bg-color-reply": "#e0dbf0",
        "main-bg-color-report": "#e3dbf0",
        "main-header-color-roles": "#ebebf0",
        "main-fg-color": "#2d2c37",
        "border-color": "#c0cdd9",
        "main-link-color": "#2a2c37",
        "main-visited-color": "#232c37",
        "text-entry-foreground": "#111",
        "text-entry-background": "white",
        "font-color-header": "black",
        "dropdown-bg-color": "white",
        "dropdown-bg-color-hover": "lightgrey",
        "background-color: #554;": "background-color: white;",
        "color: #FFFFFE;": "color: black;",
        "calendar-bg-color": "#e6ebf0",
        "lines-color": "darkblue",
        "day-number": "black",
        "day-number2": "#282c37",
        "place-color": "black",
        "event-color": "#282c37",
        "today-foreground": "white",
        "today-circle": "red",
        "event-background": "lightblue",
        "event-foreground": "white",
        "title-text": "#282c37",
        "title-background": "#ccc",
        "gallery-text-color": "black"
    }
    setThemeFromDict(baseDir, 'light', themeParams)


def setTheme(baseDir: str, name: str) -> bool:
    result = False
    if name == 'purple':
        setThemePurple(baseDir)
        result = True
    elif name == 'light':
        setThemeLight(baseDir)
        result = True
    elif name == 'hacker':
        setThemeHacker(baseDir)
        result = True
    elif name == 'highvis':
        setThemeHighVis(baseDir)
        result = True
    else:
        # default
        setThemeDefault(baseDir)
        result = True
    setCustomFont(baseDir)
    return result