📧 Sending emails

.gitignore

@@ -0,0 +1 @@
+*.ini

config.ini.sample

@@ -1,7 +1,10 @@
 [Trello]
-TrelloAPIKey=
+APIKey=
+APIToken=
+BoardID=
 
 [SMTP]
 Server=
+Port=
 Username=
 Password=

main.py

@@ -1,27 +1,231 @@
-def main():
-    # Step 1:
-    #   Create an config file from the sample file if there is none,
-    #   then return.
-    #   Read config file if it already existed.
+from configparser import ConfigParser   # For reading the config.ini file
+from shutil import copy                 # For creating a new config.ini file
+from requests import request            # For using the Trello API
+import smtplib, ssl, email              # For sending emails
 
-    # Step 2:
-    #   Get data from Trello API
-    #       - Time each card has been in the step it's in
-    #       - Escalation level
-    #       - Who is assigned (as well as their email)
+### Constants
 
-    # Step 3:
-    #   For each card, compare to escalation rules to see if it's at the step
-    #   and escalation level it should be at. If not, flag it.
+TRELLO_API_CARDS_URL = "https://api.trello.com/1/boards/{id}/cards"
 
-    # Step 4:
-    #   Generate reports for each person, showing their own cards.
-    #   Perhaps a "master report" with every card.
+###
 
-    # Step 5:
-    #   Send out the reports via email.
+# TODO: Set up actual logging
+def log(text: str):
+    print(text)
+
+def read_config() -> dict:
+    """
+    Reads the file config.ini. If the there is no file, it will create one. If
+    the file has empty fields, it will notify the user and end the program.
+
+    RETURNS
+    -------
+    - dict
+        The contents of the config.ini file.
+    """
+    config = ConfigParser()
+
+    # Reads the file and checks if it exists
+    if config.read('config.ini') == []:
+        copy("config.ini.sample","config.ini")
+        log("Creating config.ini file")
+        exit()
+
+    # Creates the dict and removes the "DEFAULTS" section
+    config_dict = {
+        key: dict(value) for key,value in dict(config).items()
+        if key != "DEFAULT"
+    }
+
+    # Checks if every field is filled out
+    all_filled_out = all(
+        all(v2 != '' for _,v2 in v1.items())
+        for _,v1 in config_dict.items()
+    )
+
+    if not all_filled_out:
+        log("Empty fields in config.ini")
+        exit()
+
+    return config_dict
+
+def get_trello_cards(config: dict) -> list[dict]:
+    """
+    Uses the Trello API to get every card from the board, and extracts the important information.
+
+    PARAMETERS
+    ----------
+    - config: dict
+        The config file data. Uses this for the board ID, and the API key and
+        token.
+
+    RETURNS
+    -------
+    - list[dict]
+        A list of each card, with the following information: card id, name of the card, when the last activity on the card was performed, the IDs of whatever members are assigned, and the labels the card has.
+    """
+    url = TRELLO_API_CARDS_URL.format(id=config["Trello"]["boardid"])
+    query = {
+        'key': config["Trello"]["apikey"],
+        'token': config["Trello"]["apitoken"]
+    }
+
+    # Calling the API
+    response = request(
+        "GET",
+        url,
+        params=query
+    )
+
+    # Making a list of cards with relevant information
+    cards = [
+        {
+            "id": card["id"],
+            "name": card["name"],
+            "lastActivity": card["dateLastActivity"],
+            "memberIDs": card["idMembers"],
+            "labels": [label["name"] for label in card["labels"]]
+        }
+        for card in response.json()
+    ]
+
+    return cards
+
+def flag_out_of_date_cards(cards: list[dict]) -> list[dict]:
+    """
+    Flags cards as out of date, if they exceed the deadline.
+
+    PARAMETERS
+    ----------
+    - cards: list[dict]
+        The list of cards.
+
+    RETURNS
+    -------
+    - list[dict]
+        The same list of cards, but with an out_of_date boolean field.
+    """
     pass
 
+def generate_reports(cards: list[dict]) -> tuple[str,list]:
+    """
+    Generates the PDF reports for each user. Each report will be found at
+    ./reports/TIMESTAMP/USERID.pdf
+
+    PARAMETERS
+    ----------
+    - cards: list[dict]
+        The list of cards.
+
+    RETURNS
+    -------
+    - str
+        The timestamp used for the folder in which the reports are generated.
+
+    - list
+        The list of users reports were generated for.
+    """
+    pass
+
+def get_emails(config: dict, user_ids: list[str]) -> dict:
+    """
+    Uses the Trello API to find the email addresses of the given users.
+
+    PARAMETERS
+    ----------
+    - config: dict
+        The config file data. Uses this for the board ID, and the API key and
+        token.
+
+    - user_ids: list[str]
+        A list of user IDs.
+
+    RETURNS
+    -------
+    - dict
+        A dict where each user ID is the key and the value is their email.
+    """
+    pass
+
+def send_emails(config: dict, users: dict, timestamp: str) -> None:
+    """
+    Sending out emails.
+
+    PARAMETERS
+    ----------
+    - config: dict
+        The config file data. Uses this for the SMTP server, port, username,
+        and password.
+
+    - users: dict
+        Each user ID and the email connected to it.
+
+    - timestamp: str
+        The timestamp used to create the folder that the reports are in.
+    """
+    # Create a secure SSL context
+    context = ssl.create_default_context()
+
+    # Logging in
+    server_url = config["SMTP"]["server"]
+    port = config["SMTP"]["port"]
+    username = config["SMTP"]["username"]
+    password = config["SMTP"]["password"]
+    with smtplib.SMTP_SSL(server_url, port, context=context) as server:
+        server.login(username, password)
+
+        # Looping through each user and sending them an email with the pdf
+        for user_id, receiver in users.items():
+            pdf_path = f"reports/{timestamp}/{user_id}.pdf"
+
+            subject = "Trello Report"
+            body = "Here is your Trello Report"
+
+            # Preparing the message
+            message = email.mime.multipart.MIMEMultipart()
+            message["From"] = username
+            message["To"] = receiver
+            message["Subject"] = subject
+            message.attach(email.mime.text.MIMEText(body, "plain"))
+
+            # Open PDF file in binary mode, and attach it to the email
+            with open(pdf_path, "rb") as file_pointer:
+                part = email.mime.base.MIMEBase("application", "octet-stream")
+                part.set_payload(file_pointer.read())
+
+            # Encode file in ASCII characters to send by email
+            email.encoders.encode_base64(part)
+
+            # Add header as key/value pair to attachment part
+            part.add_header(
+                "Content-Disposition",
+                f"attachment; filename= TrelloReport-{user_id}-{timestamp}.pdf",
+            )
+
+            # Add attachment to message and convert message to string
+            message.attach(part)
+            text = message.as_string()
+
+            server.sendmail(username, receiver, text)
+
+def main():
+    # Reading the config file
+    config = read_config()
+
+    # Getting the cards from Trello
+    cards = get_trello_cards(config)
+
+    # Flagging the cards if they've exceeded their deadline
+    cards = flag_out_of_date_cards(cards)
+
+    # Generate the PDF reports
+    timestamp, user_ids = generate_reports(cards)
+
+    # Get the email address of each user
+    users = get_emails(config, user_ids)
+
+    # Send out the emails
+    send_emails(config, users, timestamp)
 
 if __name__ == "__main__":
     main()

requirements.txt

@@ -0,0 +1 @@
+requests==2.32.3