from orgparse import loads

blogDir: str = "./blogs"
debug: bool = True

def debugPrint(msg: str) -> None:
    if debug:
        print("(ORG HANDLER) PRINT:  " + msg)

def checkAndRetrieveMetadata(fileData: str, metadataName: str):
    line = fileData.readline()
    metadataFullName = "#+" + metadataName + ":"
    if metadataFullName in line:
        linetoarray = line.split()
        return " ".join(linetoarray[1:])
    else:
        debugPrint("Could not find " + metadataFullName + " metadata field of document!")
        return False

def getOrgTitle(blogID: int) -> str:
    try:
        fileData = open(blogDir + "/" + str(blogID) + "/" + str(blogID) + ".org", 'r')
        title = checkAndRetrieveMetadata(fileData, "TITLE")
        if title:
            return title
    except Exception as error:
        debugPrint("Error getting blog title! " + repr(error))

def getOrgDescription(blogID: str) -> str:
    try:
        fileData = open(blogDir + "/" + str(blogID) + "/" + str(blogID) + ".org", 'r')
        orgRoot = loads(fileData.read())

        fileData.readline()
        shortDescription = checkAndRetrieveMetadata(fileData, "DESCRIPTION")
        if not shortDescription:
            debugPrint("No valid description found, will generate a placeholder from the text itself...")
            firstText = orgRoot[1].body
            shortDescription = (firstText[:60] + "...") if len(firstText) > 60 else firstText
        return shortDescription
    except Exception as error:
        debugPrint("Error getting org title! " + repr(error))
    

def orgToHTML(orgData: str) -> str:
    try:
        orgRoot = loads(orgData)
        parsedHTML = ""

        for node in orgRoot[1:]:
            if node.heading:
                headingLevel = str(node.level)
                parsedHTML += "<h" + headingLevel + ">" + node.heading + "</h" + headingLevel + ">" + "\n"
            if node.body:
                parsedHTML += node.body + "\n"
        return parsedHTML
    except Exception as error:
        debugPrint("Error parsing org! " + repr(error))