added crud operations for Course

bot/callbacks/courses.py

@@ -0,0 +1,159 @@
+from telebot import TeleBot, types
+from database.models import Courses
+from bot.utils.crud_helpers import create_entity_markup
+from bot.utils.formatters import format_course_info
+from bot.handlers.start import startMarkup
+
+# TODO: Add Option for selecting Teacher in a more user-friendly way (name instead of ID) + pagination for it.
+# TODO: Add Buttons for offering multiple choices for fields like language and difficulty.
+
+
+def register(bot: TeleBot):
+    cancelMarkup = types.InlineKeyboardMarkup()
+    cancelMarkup.add(types.InlineKeyboardButton(
+        "Cancel", callback_data="cancel"))
+
+    COURSE_FIELDS = [
+        ('name', "the course's name"),
+        ('teacher_id', "The course's Teacher ID"),
+        ('description', "description (<Optional>)"),
+        ('language', "language ('english', 'spanish', 'german', 'french', 'persian')"),
+        ('difficulty', "difficulty (<Optional>) ('beginner', 'intermediate', 'expert')"),
+    ]
+    EDITABLE_FIELDS = {
+        'name': 1,
+        'description': 5,
+        'difficulty': 6,
+        'language': 7
+    }
+
+    # Showing details of a Course
+    @bot.callback_query_handler(func=lambda call: call.data.startswith('course_'))
+    def show_course_details(call):
+        course_id = call.data.split('_')[1]
+        course = Courses.getCourseById(course_id)
+
+        if not course:
+            bot.send_message(call.message.chat.id, "Course not found.")
+            return
+
+        details = format_course_info(course)
+        markup = create_entity_markup("course", course_id)
+        markup.add(types.InlineKeyboardButton(
+            f"👨‍🏫 Teacher's Info", callback_data=f"teacher_{course[3]}"))
+
+        bot.send_message(call.message.chat.id, details,
+                         reply_markup=markup, parse_mode="HTML")
+
+        bot.answer_callback_query(call.id)
+
+    # Creating a Course Flow
+    @bot.callback_query_handler(func=lambda call: call.data == 'create_course')
+    def start_course_creation(call):
+        msg = bot.send_message(call.message.chat.id,
+                               "Please enter following data: (enter any key to start)",
+                               reply_markup=cancelMarkup)
+        bot.register_next_step_handler(msg, collect_field, {}, 0)
+        bot.answer_callback_query(call.id)
+
+    def collect_field(message, data, step):
+        # Save previous field
+        if step > 0:
+            field_name = COURSE_FIELDS[step - 1][0]
+            data[field_name] = message.text
+
+        # Done collecting?
+        if step >= len(COURSE_FIELDS):
+            show_confirmation(message, data)
+            return
+
+        # Ask next question
+        field_name, prompt = COURSE_FIELDS[step]
+        msg = bot.send_message(message.chat.id, f"Now enter {prompt}:",
+                               reply_markup=cancelMarkup)
+        bot.register_next_step_handler(msg, collect_field, data, step + 1)
+
+    def show_confirmation(message, data):
+        summary = "Is this correct? (enter any key to continue or cancel to exit)\n\n" + "\n".join(
+            f"{name.replace('_', ' ').title()}: {data[name]}"
+            for name, _ in COURSE_FIELDS
+        )
+        msg = bot.send_message(message.chat.id, summary,
+                               reply_markup=cancelMarkup)
+        bot.register_next_step_handler(msg, create_course, data)
+
+    def create_course(message, data):
+        if Courses.createCourse(**data):
+            bot.send_message(message.chat.id, "✅ Teacher created!",
+                             reply_markup=startMarkup())
+        else:
+            bot.send_message(
+                message.chat.id, "❌ Failed to create course.", reply_markup=startMarkup())
+
+    # Editing a Course Flow
+    @bot.callback_query_handler(func=lambda call: call.data.startswith('edit_course_'))
+    def start_course_editing(call):
+        course_id = call.data.split('_')[2]
+        course = Courses.getCourseById(course_id)
+
+        if not course:
+            bot.send_message(call.message.chat.id, "Course not found.")
+            bot.answer_callback_query(call.id)
+            return
+
+        editMarkup = types.ReplyKeyboardMarkup(
+            resize_keyboard=True, one_time_keyboard=True)
+        for field in list(EDITABLE_FIELDS.keys()) + ['Cancel']:
+            editMarkup.add(types.KeyboardButton(field.capitalize()))
+
+        msg = bot.send_message(call.message.chat.id,
+                               "Please enter the field you want to edit: ", reply_markup=editMarkup)
+
+        bot.register_next_step_handler(
+            msg, process_field_select, course)
+        bot.answer_callback_query(call.id)
+
+    def process_field_select(message, course: tuple):
+        field = message.text.lower()
+        if field == 'cancel' or field not in EDITABLE_FIELDS:
+            msg = "Action cancelled." if field == 'cancel' else "Invalid field. Action cancelled."
+            bot.send_message(message.chat.id, msg,
+                             reply_markup=startMarkup())
+            return
+
+        current_value = course[EDITABLE_FIELDS[field]]
+
+        msg = bot.send_message(
+            message.chat.id, f"Current value is: {current_value}.\n Please enter new value for {field}:", reply_markup=cancelMarkup)
+        bot.register_next_step_handler(
+            msg, process_value_edit, course[0], field, current_value)
+
+    def process_value_edit(message, course_id, field, previous_value):
+        new_value = message.text
+
+        # Handle cancellation
+        if new_value.lower() == 'cancel' or new_value == f"{previous_value} (current)":
+            msg = "Action cancelled." if new_value.lower(
+            ) == 'cancel' else f"No changes made to {field}."
+            bot.send_message(message.chat.id, msg, reply_markup=startMarkup())
+            return
+
+        # Update teacher
+        if Courses.updateCourse(course_id, **{field: new_value}):
+            bot.send_message(
+                message.chat.id, f"✅ Course's {field} updated successfully.", reply_markup=startMarkup())
+        else:
+            bot.send_message(
+                message.chat.id, f"❌ Failed to update Course's {field}.", reply_markup=startMarkup())
+
+    # Deleting a Teacher
+    @bot.callback_query_handler(func=lambda call: call.data.startswith('delete_course_'))
+    def delete_course(call):
+        course_id = call.data.split('_')[2]
+        if (Courses.deleteCourse(course_id)):
+            bot.send_message(call.message.chat.id, "✅ Course deleted.",
+                             reply_markup=startMarkup())
+        else:
+            bot.send_message(call.message.chat.id, "❌ Failed to delete Course.",
+                             reply_markup=startMarkup())
+        bot.answer_callback_query(call.id)

bot/callbacks/init.py

@@ -1,7 +1,17 @@
-from . import students, teachers
+from . import students, teachers, courses
+from bot.handlers.start import startMarkup
 
 
 def register_all_callbacks(bot):
     """Register all callback handlers"""
     students.register(bot)
     teachers.register(bot)
+    courses.register(bot)
+
+    # Cancel is common among all
+    @bot.callback_query_handler(func=lambda call: call.data == 'cancel')
+    def cancel_action(call):
+        bot.clear_step_handler(call.message)
+        bot.send_message(call.message.chat.id,
+                         "Action cancelled.", reply_markup=startMarkup())
+        bot.answer_callback_query(call.id)

bot/callbacks/teachers.py

@@ -4,6 +4,12 @@ from bot.utils.formatters import format_teacher_info
 from bot.handlers.start import startMarkup
 from bot.utils.crud_helpers import create_entity_markup
 
+# TODO: Add Buttons for skipping Optional Fields (Add to all entities).
+# TODO: Add Option for handling all updates at once.
+# TODO: Add Authentication for sensitive actions and info.
+
+# TODO: Add Option for seeing courses taught by a teacher in Teacher Details.
+
 
 def register(bot: TeleBot):
     cancelMarkup = types.InlineKeyboardMarkup()
@@ -91,13 +97,6 @@ def register(bot: TeleBot):
             bot.send_message(
                 message.chat.id, "❌ Failed to create teacher.", reply_markup=startMarkup())
 
-    @bot.callback_query_handler(func=lambda call: call.data == 'cancel')
-    def cancel_action(call):
-        bot.clear_step_handler(call.message)
-        bot.send_message(call.message.chat.id,
-                         "Action cancelled.", reply_markup=startMarkup())
-        bot.answer_callback_query(call.id)
-
     # Editing a Teacher Flow
     @bot.callback_query_handler(func=lambda call: call.data.startswith('edit_teacher_'))
     def start_teacher_editing(call):

bot/handlers/courses.py

@@ -0,0 +1,30 @@
+import logging
+from telebot import types
+from database.models import Courses
+
+logger = logging.getLogger(__name__)
+
+
+def register(bot):
+    @bot.message_handler(func=lambda message: message.text == "Show Courses")
+    def get_students(message):
+        try:
+            data = Courses.getAllCourses()
+            if data:
+                markup = types.InlineKeyboardMarkup(row_width=2)
+                for row in data:
+                    btn = types.InlineKeyboardButton(
+                        f"{row[1][:26] + "..."} | id#{row[0]}", callback_data=f"course_{row[0]}")
+                    markup.add(btn)
+
+                # add button for creating a new course
+                markup.add(types.InlineKeyboardButton(
+                    "➕ Create New Course", callback_data="create_course"))
+
+                bot.send_message(
+                    message.chat.id, "Here is the data:", reply_markup=markup)
+            else:
+                bot.reply_to(message, "No data found.")
+        except Exception as e:
+            logger.error(f"Error in (Show Courses) handler: {e}")
+            bot.reply_to(message, "Sorry, an error occurred.")

bot/handlers/init.py

@@ -1,4 +1,4 @@
-from . import start, students, teachers, common
+from . import start, students, teachers, courses, common
 from bot.callbacks.init import register_all_callbacks
 
 
@@ -8,6 +8,7 @@ def register_all_handlers(bot):
     start.register(bot)
     students.register(bot)
     teachers.register(bot)
+    courses.register(bot)
     common.register(bot)  # Must be last (catch-all)
 
     # Callback handlers

bot/handlers/start.py

@@ -1,6 +1,8 @@
 from telebot import types
 from bot.utils.auth import is_authenticated
 
+# TODO: Add Pagincation to Showing rows of entities (To all entities)
+
 
 def register(bot):
     @bot.message_handler(commands=["start"])
@@ -16,11 +18,6 @@ def register(bot):
         bot.reply_to(message, "Use buttons to fetch from database.",
                      reply_markup=markup)
 
-    @bot.message_handler(func=lambda message: message.text in ["Show Courses", "Show Tag", "Show Categories"])
-    def handle_test_options(message):
-        option = message.text
-        bot.send_message(message.chat.id, f"You selected: {option}")
-
 
 def startMarkup():
     markup = types.ReplyKeyboardMarkup(

bot/utils/formatters.py

@@ -32,15 +32,15 @@ def calculate_age(birthday_string):
     except:
         return "N/A"
 
+
 # Student Info Formatter
-
-
 def format_student_info(student):
     """
     Format student data into a nice message
     student is a tuple: (id, username, name, created_at, email, phone_number, last_seen, is_verified, birthday)
     """
-    print(student)
+    # print(student)
+
     id, username, name, created_at, email, phone_number, last_seen, is_verfied, birthday = student
 
     verified_status = "✅ Verified" if is_verfied else "❌ Not Verified"
@@ -73,10 +73,11 @@ def format_student_info(student):
 # Teacher Info Formatter
 def format_teacher_info(teacher):
     """
-    Format student data into a nice message
+    Format teacher data into a nice message
-    student is a tuple: (id, username, created_at, email, phone_number, last_seen, is_verified, birthday)
+    teacher is a tuple: (id, username, name, created_at, email, phone_number, last_seen, is_verified, birthday, about_me, job_title)
     """
-    print(teacher)
+    # print(teacher)
+
     id, username, name, created_at, email, phone_number, last_seen, is_verfied, birthday, about_me, job_title = teacher
 
     verified_status = "✅ Verified" if is_verfied else "❌ Not Verified"
@@ -107,3 +108,36 @@ def format_teacher_info(teacher):
   <b>ID:</b> <code>{id}</code>
   """
     return details.strip()
+
+# Course Info Formatter
+
+
+def format_course_info(course):
+    """
+    Format course data into a nice message
+    course is a tuple: (id, name, created_at, teacher_id, updated_at, description, difficulty, language)
+    """
+    # print(course)
+
+    id, name, created_at, teacher_id, updated_at, description, difficulty, language = course
+
+    # Format dates nicely
+    created_date = format_date(created_at)
+    updated_at = format_date(updated_at)
+
+    details = f"""
+  <b>📚 Course Profile</b>
+
+  <b>Name:</b> {name}
+  <b>Description:</b>
+  {description}
+
+  <b>Language:</b> {language}
+  <b>Difficulty:</b> {difficulty}
+
+  <b>📅 Course Info</b>
+  <b>Created At:</b> {created_date}
+  <b>Last Updated At:</b> {updated_at}
+  <b>ID:</b> <code>{id}</code>
+  """
+    return details.strip()

database/models.py

@@ -264,3 +264,132 @@ class Teachers:
         finally:
             if conn:
                 connection.release_db_connection(conn)
+
+
+class Courses:
+    def getAllCourses():
+        conn = None
+        try:
+            conn = connection.get_db_connection()
+            if not conn:
+                return None
+
+            cursor = conn.cursor()
+            cursor.execute("SELECT id, name FROM courses")
+            result = cursor.fetchall()
+            cursor.close()
+
+            return result if result else None
+        except Exception as e:
+            logger.error(f"Database query error in getAllCourses: {e}")
+            return None
+        finally:
+            if conn:
+                connection.release_db_connection(conn)
+
+    def getCourseById(course_id):
+        conn = None
+        try:
+            conn = connection.get_db_connection()
+            if not conn:
+                return None
+
+            cursor = conn.cursor()
+            cursor.execute(
+                "SELECT id, name, created_at, teacher_id, updated_at, description, difficulty, language FROM courses WHERE id = %s", (course_id, ))
+            result = cursor.fetchall()
+            cursor.close()
+
+            return result[0] if result else None
+        except Exception as e:
+            logger.error(f"Database query error in getCourseById: {e}")
+            return None
+        finally:
+            if conn:
+                connection.release_db_connection(conn)
+
+    def createCourse(name, teacher_id, description, language, difficulty):
+        conn = None
+        try:
+            conn = connection.get_db_connection()
+            if not conn:
+                return False
+
+            cursor = conn.cursor()
+            cursor.execute(
+                "INSERT INTO courses (name, teacher_id, description, language, difficulty) VALUES (%s, %s, %s, %s, %s)",
+                (name, teacher_id, description, language, difficulty)
+            )
+            conn.commit()
+            cursor.close()
+
+            return True
+        except Exception as e:
+            logger.error(f"Database query error in createCourse: {e}")
+            return False
+        finally:
+            if conn:
+                connection.release_db_connection(conn)
+
+    def updateCourse(course_id, **fields):
+        if not fields:
+            return False  # nothing to update
+
+        conn = None
+        try:
+            conn = connection.get_db_connection()
+            if not conn:
+                return False
+
+            cursor = conn.cursor()
+
+            # Build dynamic SET clause
+            columns = []
+            values = []
+
+            for key, value in fields.items():
+                columns.append(f"{key} = %s")
+                values.append(value)
+
+            values.append(course_id)
+
+            query = f"""
+                UPDATE courses
+                SET {', '.join(columns)}
+                WHERE id = %s
+            """
+
+            cursor.execute(query, tuple(values))
+            conn.commit()
+            cursor.close()
+
+            return True
+
+        except Exception as e:
+            logger.error(f"Database query error in updateCourse: {e}")
+            return False
+
+        finally:
+            if conn:
+                connection.release_db_connection(conn)
+
+    def deleteCourse(course_id):
+        conn = None
+        try:
+            conn = connection.get_db_connection()
+            if not conn:
+                return False
+
+            cursor = conn.cursor()
+            cursor.execute(
+                "DELETE FROM courses WHERE id = %s", (course_id,))
+            conn.commit()
+            cursor.close()
+
+            return True
+        except Exception as e:
+            logger.error(f"Database query error in deleteCourse: {e}")
+            return False
+        finally:
+            if conn:
+                connection.release_db_connection(conn)