__filename__ = "theme.py"
__author__ = "Bob Mottram"
__license__ = "AGPL3+"
__version__ = "1.0.0"
__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 removeTheme(baseDir: str):
    themeFiles=('epicyon.css','login.css','follow.css','suspended.css','calendar.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')
    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 setThemeHighVis(baseDir: str):
    themeParams={
        "font-size-header": "22px",
        "font-size": "45px",
        "font-size2": "45px",
        "font-size3": "45px",
        "font-size4": "35px",
        "font-size5": "29px"
    }
    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",
        "time-color": "#f98bb0",
        "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": "#3f2145",
        "place-color": "black",
        "event-color": "#282c37",
        "today-foreground": "white",
        "today-circle": "red",
        "event-background": "yellow",
        "event-foreground": "white",
        "title-text": "white",
        "title-background": "#ff42a0"
    }
    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": "green",
        "border-color": "darkgreen",
        "main-link-color": "#266020",
        "main-visited-color": "#3c8234",
        "time-color": "green",
        "button-selected": "#063200",
        "button-background": "#062200",
        "button-text": "green",
        "button-corner-radius": "4px",
        "timeline-border-radius": "4px",
        "*font-family": "'monospace'",
        "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"
    }
    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",
        "time-color": "#555",
        "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",
        "time-color": "black",
        "place-color": "black",
        "event-color": "#282c37",
        "today-foreground": "white",
        "today-circle": "red",
        "event-background": "lightblue",
        "event-foreground": "white",
        "title-text": "#282c37",
        "title-background": "#ccc"
    }
    setThemeFromDict(baseDir,'light',themeParams)
    
def setTheme(baseDir: str,name: str) -> bool:
    if name=='default':
        setThemeDefault(baseDir)
        return True
    elif name=='purple':
        setThemePurple(baseDir)
        return True
    elif name=='light':
        setThemeLight(baseDir)
        return True
    elif name=='hacker':
        setThemeHacker(baseDir)
        return True
    elif name=='highvis':
        setThemeHighVis(baseDir)
        return True
    return False