commit a7bb2f3dae6c61a91f37a72b766be1055b671f59
Author: Talhadeveloperr <23021519-005@uog.edu.pk>
Date:   Wed Sep 9 17:00:54 2026 +0500

    initial project

diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..7e99e36
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1 @@
+*.pyc
\ No newline at end of file
diff --git a/app/template_generator.py b/app/template_generator.py
new file mode 100644
index 0000000..5b005c6
--- /dev/null
+++ b/app/template_generator.py
@@ -0,0 +1,84 @@
+"""
+Main entry point: builds a clash-free dummy schedule and renders all five
+timetable views (batch/department/room/student/teacher -wise) as .xlsx
+files under result/templates/<view>/.
+
+Run:
+    python app/template_generator.py
+"""
+
+import os
+import sys
+
+APP_DIR = os.path.dirname(os.path.abspath(__file__))
+ROOT_DIR = os.path.dirname(APP_DIR)
+
+sys.path.insert(0, APP_DIR)
+sys.path.insert(0, os.path.join(ROOT_DIR, "controller"))
+sys.path.insert(0, os.path.join(ROOT_DIR, "templates", "batch-wise"))
+sys.path.insert(0, os.path.join(ROOT_DIR, "templates", "department-wise"))
+sys.path.insert(0, os.path.join(ROOT_DIR, "templates", "room-wise"))
+sys.path.insert(0, os.path.join(ROOT_DIR, "templates", "student-wise"))
+sys.path.insert(0, os.path.join(ROOT_DIR, "templates", "teacher-wise"))
+
+from template_controller import build_schedule  # noqa: E402
+from conflict_checker import check_all_conflicts  # noqa: E402
+from conflict_checker.student_conflict_checker import format_student_conflicts  # noqa: E402
+from conflict_checker.teacher_conflict_checker import format_teacher_conflicts  # noqa: E402
+
+from batch_wise_template import generate_batch_wise_templates  # noqa: E402
+from department_wise_template import generate_department_wise_templates  # noqa: E402
+from room_wise_template import generate_room_wise_templates  # noqa: E402
+from student_wise_template import generate_student_wise_templates  # noqa: E402
+from teacher_wise_template import generate_teacher_wise_templates  # noqa: E402
+
+RESULT_DIR = os.path.join(ROOT_DIR, "result", "templates")
+
+
+def main():
+    data_csv_marker = os.path.join(ROOT_DIR, "data", "dummy", "blocks", "rooms.csv")
+    if not os.path.exists(data_csv_marker):
+        print("Dummy data not found — generating it first...")
+        sys.path.insert(0, os.path.join(ROOT_DIR, "data", "dummy"))
+        from generate_dummy_data import main as generate_dummy_data
+        generate_dummy_data()
+        print()
+
+    print("Loading data and building clash-free schedule...")
+    data, sessions = build_schedule()
+    print(f"Scheduled {len(sessions)} sessions.\n")
+
+    print("Running conflict checks (student/batch and teacher)...")
+    report = check_all_conflicts(sessions)
+    if report["has_conflicts"]:
+        for line in format_student_conflicts(report["student_conflicts"]):
+            print(f"  STUDENT CONFLICT: {line}")
+        for line in format_teacher_conflicts(report["teacher_conflicts"]):
+            print(f"  TEACHER CONFLICT: {line}")
+        print(
+            f"Found {len(report['student_conflicts'])} student conflict(s) and "
+            f"{len(report['teacher_conflicts'])} teacher conflict(s).\n"
+        )
+    else:
+        print("No conflicts found — schedule is clash-free for students and teachers.\n")
+
+    generators = [
+        ("batch-wise", generate_batch_wise_templates),
+        ("department-wise", generate_department_wise_templates),
+        ("room-wise", generate_room_wise_templates),
+        ("student-wise", generate_student_wise_templates),
+        ("teacher-wise", generate_teacher_wise_templates),
+    ]
+
+    total_files = 0
+    for view_name, generate_fn in generators:
+        output_dir = os.path.join(RESULT_DIR, view_name)
+        written = generate_fn(sessions, data, output_dir)
+        total_files += len(written)
+        print(f"[{view_name}] generated {len(written)} file(s) -> {output_dir}")
+
+    print(f"\nDone. {total_files} timetable file(s) written under {RESULT_DIR}")
+
+
+if __name__ == "__main__":
+    main()
diff --git a/app/xlsx_grid_helper.py b/app/xlsx_grid_helper.py
new file mode 100644
index 0000000..5fa33a1
--- /dev/null
+++ b/app/xlsx_grid_helper.py
@@ -0,0 +1,122 @@
+"""
+Shared openpyxl helpers for rendering a day x time-slot timetable grid.
+Used by every templates/*-wise/*_template.py module so styling stays
+consistent across views.
+"""
+
+import os
+
+from openpyxl import Workbook
+from openpyxl.styles import Alignment, Border, Font, PatternFill, Side
+from openpyxl.utils import get_column_letter
+
+DAYS = ["Monday", "Tuesday", "Wednesday", "Thursday", "Friday"]
+
+HEADER_FILL = PatternFill(start_color="1F4E78", end_color="1F4E78", fill_type="solid")
+HEADER_FONT = Font(color="FFFFFF", bold=True)
+LUNCH_FILL = PatternFill(start_color="D9D9D9", end_color="D9D9D9", fill_type="solid")
+GENERAL_FILL = PatternFill(start_color="FFF2CC", end_color="FFF2CC", fill_type="solid")
+LAB_FILL = PatternFill(start_color="D9EAD3", end_color="D9EAD3", fill_type="solid")
+THEORY_FILL = PatternFill(start_color="DDEBF7", end_color="DDEBF7", fill_type="solid")
+THIN_BORDER = Border(
+    left=Side(style="thin"), right=Side(style="thin"),
+    top=Side(style="thin"), bottom=Side(style="thin"),
+)
+CENTER = Alignment(horizontal="center", vertical="center", wrap_text=True)
+
+
+def cell_fill_for(session):
+    if session is None:
+        return None
+    if session.get("is_general"):
+        return GENERAL_FILL
+    if session.get("course_type") == "lab":
+        return LAB_FILL
+    return THEORY_FILL
+
+
+def build_grid_sheet(ws, title, subtitle, time_slots, sessions_by_day_slot, cell_text_fn):
+    """
+    Renders one timetable grid onto worksheet `ws`.
+
+    time_slots: ordered list of dicts: {"label": str, "start": str, "end": str,
+                "is_lunch": bool}
+    sessions_by_day_slot: dict[(day, slot_index)] -> session dict (or list of
+                session dicts for slots spanning a double/lab period), used
+                only to decide fill color via cell_fill_for().
+    cell_text_fn: function(day, slot_index) -> str to render into the cell.
+    """
+    invalid_chars = ':\\/?*[]'
+    sheet_name = "".join(c for c in title if c not in invalid_chars)
+    ws.title = sheet_name[:31]  # Excel sheet name limit
+
+    ws.merge_cells("A1:F1")
+    ws["A1"] = title
+    ws["A1"].font = Font(bold=True, size=14)
+    ws["A1"].alignment = CENTER
+
+    if subtitle:
+        ws.merge_cells("A2:F2")
+        ws["A2"] = subtitle
+        ws["A2"].font = Font(italic=True, size=10, color="555555")
+        ws["A2"].alignment = CENTER
+
+    header_row = 4
+    ws.cell(row=header_row, column=1, value="Time").font = HEADER_FONT
+    ws.cell(row=header_row, column=1).fill = HEADER_FILL
+    ws.cell(row=header_row, column=1).alignment = CENTER
+    ws.cell(row=header_row, column=1).border = THIN_BORDER
+
+    for col, day in enumerate(DAYS, start=2):
+        c = ws.cell(row=header_row, column=col, value=day)
+        c.font = HEADER_FONT
+        c.fill = HEADER_FILL
+        c.alignment = CENTER
+        c.border = THIN_BORDER
+
+    for row_offset, slot in enumerate(time_slots):
+        row = header_row + 1 + row_offset
+        time_cell = ws.cell(row=row, column=1, value=f'{slot["start"]} - {slot["end"]}')
+        time_cell.font = Font(bold=True, size=9)
+        time_cell.alignment = CENTER
+        time_cell.border = THIN_BORDER
+        if slot.get("is_lunch"):
+            time_cell.fill = LUNCH_FILL
+
+        for col, day in enumerate(DAYS, start=2):
+            cell = ws.cell(row=row, column=col)
+            cell.border = THIN_BORDER
+            cell.alignment = CENTER
+            cell.font = Font(size=9)
+
+            if slot.get("is_lunch"):
+                cell.fill = LUNCH_FILL
+                cell.value = "LUNCH BREAK"
+                continue
+
+            text = cell_text_fn(day, row_offset)
+            cell.value = text if text else ""
+
+            session = sessions_by_day_slot.get((day, row_offset))
+            fill = cell_fill_for(session)
+            if fill:
+                cell.fill = fill
+
+    ws.column_dimensions["A"].width = 16
+    for col in range(2, 2 + len(DAYS)):
+        ws.column_dimensions[get_column_letter(col)].width = 26
+
+    for row_offset in range(len(time_slots)):
+        ws.row_dimensions[header_row + 1 + row_offset].height = 42
+
+
+def save_workbook(wb, output_dir, filename):
+    os.makedirs(output_dir, exist_ok=True)
+    path = os.path.join(output_dir, filename)
+    wb.save(path)
+    return path
+
+
+def new_workbook():
+    wb = Workbook()
+    return wb
diff --git a/controller/conflict_checker/__init__.py b/controller/conflict_checker/__init__.py
new file mode 100644
index 0000000..04fe44d
--- /dev/null
+++ b/controller/conflict_checker/__init__.py
@@ -0,0 +1,19 @@
+from .student_conflict_checker import check_student_conflicts
+from .teacher_conflict_checker import check_teacher_conflicts
+
+__all__ = ["check_student_conflicts", "check_teacher_conflicts", "check_all_conflicts"]
+
+
+def check_all_conflicts(sessions):
+    """
+    Runs every conflict check against the given list of scheduled sessions
+    and returns a combined report:
+        {"student_conflicts": [...], "teacher_conflicts": [...], "has_conflicts": bool}
+    """
+    student_conflicts = check_student_conflicts(sessions)
+    teacher_conflicts = check_teacher_conflicts(sessions)
+    return {
+        "student_conflicts": student_conflicts,
+        "teacher_conflicts": teacher_conflicts,
+        "has_conflicts": bool(student_conflicts or teacher_conflicts),
+    }
diff --git a/controller/conflict_checker/student_conflict_checker.py b/controller/conflict_checker/student_conflict_checker.py
new file mode 100644
index 0000000..814661f
--- /dev/null
+++ b/controller/conflict_checker/student_conflict_checker.py
@@ -0,0 +1,63 @@
+"""
+Verifies that no batch (and therefore no student in that batch) is booked
+into two courses — lecture or lab — at the same day+slot.
+
+This is an independent verification pass over the scheduler's output: it
+does not trust the scheduler's own busy-maps, it re-derives every batch's
+occupied (day, slot_index) cells directly from the session list and flags
+any cell used by more than one session.
+"""
+
+from collections import defaultdict
+
+
+def check_student_conflicts(sessions):
+    """
+    Returns a list of conflict dicts, one per (batch, day, slot) where two
+    or more sessions overlap for that batch:
+        {
+            "batch_code": str,
+            "day": str,
+            "slot_index": int,
+            "sessions": [session, session, ...],
+        }
+    Sessions that span multiple slot_indices (labs) occupy every one of
+    their slot_indices, so a lab overlapping a lecture in either of its two
+    slots is caught too.
+    """
+    # (batch_code, day, slot_index) -> list of sessions occupying that cell
+    occupied = defaultdict(list)
+
+    for session in sessions:
+        day = session["day"]
+        for slot_index in session["slot_indices"]:
+            for batch_code in session["batch_codes"]:
+                occupied[(batch_code, day, slot_index)].append(session)
+
+    conflicts = []
+    for (batch_code, day, slot_index), cell_sessions in occupied.items():
+        if len(cell_sessions) > 1:
+            conflicts.append({
+                "batch_code": batch_code,
+                "day": day,
+                "slot_index": slot_index,
+                "sessions": cell_sessions,
+            })
+
+    conflicts.sort(key=lambda c: (c["batch_code"], c["day"], c["slot_index"]))
+    return conflicts
+
+
+def format_student_conflicts(conflicts):
+    """Human-readable lines describing each student/batch conflict."""
+    lines = []
+    for c in conflicts:
+        course_list = ", ".join(
+            f'{s["course_id"]} ({s["course_type"]}) with {s["instructor_name"]} in {s["room_id"]}'
+            for s in c["sessions"]
+        )
+        lines.append(
+            f'Batch {c["batch_code"]} has {len(c["sessions"])} overlapping courses on '
+            f'{c["day"]} slot {c["slot_index"]}: {course_list}'
+        )
+    return lines
diff --git a/controller/conflict_checker/teacher_conflict_checker.py b/controller/conflict_checker/teacher_conflict_checker.py
new file mode 100644
index 0000000..aecfb24
--- /dev/null
+++ b/controller/conflict_checker/teacher_conflict_checker.py
@@ -0,0 +1,59 @@
+"""
+Verifies that no instructor is booked into two sessions at the same
+day+slot (whether both are lectures, both labs, or a mix of either).
+
+Like student_conflict_checker, this re-derives occupancy directly from the
+session list rather than trusting the scheduler's internal busy-maps.
+"""
+
+from collections import defaultdict
+
+
+def check_teacher_conflicts(sessions):
+    """
+    Returns a list of conflict dicts, one per (instructor_code, day, slot)
+    where two or more sessions overlap for that instructor:
+        {
+            "instructor_code": str,
+            "day": str,
+            "slot_index": int,
+            "sessions": [session, session, ...],
+        }
+    """
+    # (instructor_code, day, slot_index) -> list of sessions occupying that cell
+    occupied = defaultdict(list)
+
+    for session in sessions:
+        day = session["day"]
+        instructor_code = session["instructor_code"]
+        for slot_index in session["slot_indices"]:
+            occupied[(instructor_code, day, slot_index)].append(session)
+
+    conflicts = []
+    for (instructor_code, day, slot_index), cell_sessions in occupied.items():
+        if len(cell_sessions) > 1:
+            conflicts.append({
+                "instructor_code": instructor_code,
+                "day": day,
+                "slot_index": slot_index,
+                "sessions": cell_sessions,
+            })
+
+    conflicts.sort(key=lambda c: (c["instructor_code"], c["day"], c["slot_index"]))
+    return conflicts
+
+
+def format_teacher_conflicts(conflicts):
+    """Human-readable lines describing each teacher conflict."""
+    lines = []
+    for c in conflicts:
+        course_list = ", ".join(
+            f'{s["course_id"]} ({s["course_type"]}) for batch(es) {"+".join(s["batch_codes"])} in {s["room_id"]}'
+            for s in c["sessions"]
+        )
+        instructor_name = c["sessions"][0]["instructor_name"]
+        lines.append(
+            f'Instructor {instructor_name} ({c["instructor_code"]}) is double-booked on '
+            f'{c["day"]} slot {c["slot_index"]}: {course_list}'
+        )
+    return lines
diff --git a/controller/template_controller.py b/controller/template_controller.py
new file mode 100644
index 0000000..ca7def1
--- /dev/null
+++ b/controller/template_controller.py
@@ -0,0 +1,206 @@
+"""
+Loads dummy CSV data and builds a clash-free schedule of sessions that all
+five templates/*-wise template modules render from.
+
+Scheduling rules (dummy/demo scheduler, not a full CSP solver):
+  1. General courses (shared across every batch of a session) are placed
+     first, only on Tuesday, so those slots are locked in before anything
+     else and never clash across the batches sharing them.
+  2. Lab courses (180-minute / double-slot) are placed next, in lab rooms
+     only, on whichever day/slot-pair is free for the batch, instructor,
+     and room.
+  3. Remaining theory courses fill the rest of the week (Mon/Tue/Wed/Thu/Fri),
+     one 90-minute slot at a time, avoiding room / instructor / batch clashes.
+"""
+
+import csv
+import os
+
+DATA_DIR = os.path.join(os.path.dirname(os.path.dirname(os.path.abspath(__file__))), "data", "dummy")
+
+DAYS = ["Monday", "Tuesday", "Wednesday", "Thursday", "Friday"]
+
+# Theory grid: 5 x 90-minute slots with a lunch break, 08:30-16:30
+TIME_SLOTS = [
+    {"label": "S1", "start": "08:30", "end": "10:00", "is_lunch": False},
+    {"label": "S2", "start": "10:00", "end": "11:30", "is_lunch": False},
+    {"label": "S3", "start": "11:30", "end": "13:00", "is_lunch": False},
+    {"label": "LUNCH", "start": "13:00", "end": "13:30", "is_lunch": True},
+    {"label": "S4", "start": "13:30", "end": "15:00", "is_lunch": False},
+    {"label": "S5", "start": "15:00", "end": "16:30", "is_lunch": False},
+]
+
+# Indices into TIME_SLOTS that are real teaching slots (skip lunch)
+TEACHING_SLOT_INDICES = [i for i, s in enumerate(TIME_SLOTS) if not s["is_lunch"]]
+
+# Consecutive pairs of teaching slots usable as a 180-minute lab double-slot
+LAB_SLOT_PAIRS = [
+    (a, b)
+    for a, b in zip(TEACHING_SLOT_INDICES, TEACHING_SLOT_INDICES[1:])
+    if TIME_SLOTS[b]["start"] == TIME_SLOTS[a]["end"]
+]
+
+
+def _read_csv(relative_path):
+    path = os.path.join(DATA_DIR, relative_path)
+    with open(path, newline="", encoding="utf-8") as f:
+        return list(csv.DictReader(f))
+
+
+def load_data():
+    """Loads all dummy CSVs into plain dict/list structures."""
+    rooms = _read_csv(os.path.join("blocks", "rooms.csv"))
+    blocks = _read_csv(os.path.join("blocks", "blocks.csv"))
+    instructors = _read_csv(os.path.join("instructor", "instructors.csv"))
+    courses = _read_csv(os.path.join("courses", "courses.csv"))
+    offerings = _read_csv(os.path.join("courses", "course_offering.csv"))
+    students = _read_csv(os.path.join("roll_no", "students.csv"))
+    batches_25 = _read_csv(os.path.join("batch_codes", "25", "batches.csv"))
+    batches_26 = _read_csv(os.path.join("batch_codes", "26", "batches.csv"))
+    batches = batches_25 + batches_26
+
+    courses_by_id = {c["course_id"]: c for c in courses}
+    instructors_by_code = {i["instructor_code"]: i for i in instructors}
+    batches_by_code = {b["batch_code"]: b for b in batches}
+
+    # normalize offerings: expand "batch1|batch2" general offerings into a
+    # list of batch codes on each offering record
+    for off in offerings:
+        off["batch_codes"] = off["batch_code"].split("|")
+        off["is_general"] = courses_by_id[off["course_id"]]["is_general"].lower() == "yes"
+        off["course_type"] = courses_by_id[off["course_id"]]["course_type"]
+
+    return {
+        "rooms": rooms,
+        "blocks": blocks,
+        "instructors": instructors,
+        "instructors_by_code": instructors_by_code,
+        "courses": courses,
+        "courses_by_id": courses_by_id,
+        "offerings": offerings,
+        "students": students,
+        "batches": batches,
+        "batches_by_code": batches_by_code,
+    }
+
+
+class Scheduler:
+    """Greedy clash-free scheduler over rooms / instructors / batches."""
+
+    def __init__(self, data):
+        self.data = data
+        self.classrooms = [r for r in data["rooms"] if r["room_type"] == "classroom"]
+        self.labs = [r for r in data["rooms"] if r["room_type"] == "lab"]
+
+        # busy[(day, slot_index)] -> set of keys already occupied
+        self.room_busy = {}
+        self.instructor_busy = {}
+        self.batch_busy = {}
+
+        self.sessions = []
+
+    def _is_free(self, day, slot_index, room_id, instructor_code, batch_codes):
+        key = (day, slot_index)
+        if room_id in self.room_busy.get(key, set()):
+            return False
+        if instructor_code in self.instructor_busy.get(key, set()):
+            return False
+        if any(b in self.batch_busy.get(key, set()) for b in batch_codes):
+            return False
+        return True
+
+    def _mark_busy(self, day, slot_index, room_id, instructor_code, batch_codes):
+        key = (day, slot_index)
+        self.room_busy.setdefault(key, set()).add(room_id)
+        self.instructor_busy.setdefault(key, set()).add(instructor_code)
+        self.batch_busy.setdefault(key, set()).update(batch_codes)
+
+    def _add_session(self, offering, day, slot_indices, room):
+        course = self.data["courses_by_id"][offering["course_id"]]
+        start = TIME_SLOTS[slot_indices[0]]["start"]
+        end = TIME_SLOTS[slot_indices[-1]]["end"]
+        self.sessions.append({
+            "day": day,
+            "slot_indices": slot_indices,
+            "start": start,
+            "end": end,
+            "course_id": offering["course_id"],
+            "course_name": course["course_name"],
+            "course_type": course["course_type"],
+            "is_general": offering["is_general"],
+            "instructor_code": offering["instructor_code"],
+            "instructor_name": self.data["instructors_by_code"][offering["instructor_code"]]["instructor_name"],
+            "room_id": room["room_id"],
+            "room_name": room["room_name"],
+            "batch_codes": offering["batch_codes"],
+        })
+
+    def schedule_general_courses(self):
+        day = "Tuesday"
+        general = [o for o in self.data["offerings"] if o["is_general"]]
+        for offering in general:
+            placed = False
+            for slot_index in TEACHING_SLOT_INDICES:
+                for room in self.classrooms:
+                    if self._is_free(day, slot_index, room["room_id"], offering["instructor_code"], offering["batch_codes"]):
+                        self._mark_busy(day, slot_index, room["room_id"], offering["instructor_code"], offering["batch_codes"])
+                        self._add_session(offering, day, [slot_index], room)
+                        placed = True
+                        break
+                if placed:
+                    break
+            if not placed:
+                print(f"WARNING: could not place general course {offering['course_id']}")
+
+    def schedule_lab_courses(self):
+        labs_offerings = [o for o in self.data["offerings"] if o["course_type"] == "lab" and not o["is_general"]]
+        for offering in labs_offerings:
+            placed = False
+            for day in DAYS:
+                for slot_a, slot_b in LAB_SLOT_PAIRS:
+                    for room in self.labs:
+                        if self._is_free(day, slot_a, room["room_id"], offering["instructor_code"], offering["batch_codes"]) and \
+                           self._is_free(day, slot_b, room["room_id"], offering["instructor_code"], offering["batch_codes"]):
+                            self._mark_busy(day, slot_a, room["room_id"], offering["instructor_code"], offering["batch_codes"])
+                            self._mark_busy(day, slot_b, room["room_id"], offering["instructor_code"], offering["batch_codes"])
+                            self._add_session(offering, day, [slot_a, slot_b], room)
+                            placed = True
+                            break
+                    if placed:
+                        break
+                if placed:
+                    break
+            if not placed:
+                print(f"WARNING: could not place lab course {offering['course_id']} for {offering['batch_codes']}")
+
+    def schedule_theory_courses(self):
+        theory_offerings = [o for o in self.data["offerings"] if o["course_type"] == "theory" and not o["is_general"]]
+        for offering in theory_offerings:
+            placed = False
+            for day in DAYS:
+                for slot_index in TEACHING_SLOT_INDICES:
+                    for room in self.classrooms:
+                        if self._is_free(day, slot_index, room["room_id"], offering["instructor_code"], offering["batch_codes"]):
+                            self._mark_busy(day, slot_index, room["room_id"], offering["instructor_code"], offering["batch_codes"])
+                            self._add_session(offering, day, [slot_index], room)
+                            placed = True
+                            break
+                    if placed:
+                        break
+                if placed:
+                    break
+            if not placed:
+                print(f"WARNING: could not place theory course {offering['course_id']} for {offering['batch_codes']}")
+
+    def run(self):
+        self.schedule_general_courses()
+        self.schedule_lab_courses()
+        self.schedule_theory_courses()
+        return self.sessions
+
+
+def build_schedule():
+    data = load_data()
+    scheduler = Scheduler(data)
+    sessions = scheduler.run()
+    return data, sessions
diff --git a/data/dummy/batch_codes/25/batches.csv b/data/dummy/batch_codes/25/batches.csv
new file mode 100644
index 0000000..99fb6f5
--- /dev/null
+++ b/data/dummy/batch_codes/25/batches.csv
@@ -0,0 +1,4 @@
+batch_code,department,program,session
+25021519,CS,BSCS,25
+25021520,CS,BSSE,25
+25031519,EE,BSEE,25
diff --git a/data/dummy/batch_codes/26/batches.csv b/data/dummy/batch_codes/26/batches.csv
new file mode 100644
index 0000000..ef25f8a
--- /dev/null
+++ b/data/dummy/batch_codes/26/batches.csv
@@ -0,0 +1,4 @@
+batch_code,department,program,session
+26021519,CS,BSCS,26
+26021520,CS,BSSE,26
+26031519,EE,BSEE,26
diff --git a/data/dummy/blocks/blocks.csv b/data/dummy/blocks/blocks.csv
new file mode 100644
index 0000000..cc42f81
--- /dev/null
+++ b/data/dummy/blocks/blocks.csv
@@ -0,0 +1,2 @@
+block_id,block_name
+A,Block A
diff --git a/data/dummy/blocks/rooms.csv b/data/dummy/blocks/rooms.csv
new file mode 100644
index 0000000..5306ce8
--- /dev/null
+++ b/data/dummy/blocks/rooms.csv
@@ -0,0 +1,7 @@
+room_id,room_name,block_id,room_type,capacity
+A-101,Room 101,A,classroom,60
+A-102,Room 102,A,classroom,60
+A-103,Room 103,A,classroom,50
+A-201,Room 201,A,classroom,60
+A-L01,Computer Lab 1,A,lab,35
+A-L02,Computer Lab 2,A,lab,35
diff --git a/data/dummy/courses/course_offering.csv b/data/dummy/courses/course_offering.csv
new file mode 100644
index 0000000..bb12df3
--- /dev/null
+++ b/data/dummy/courses/course_offering.csv
@@ -0,0 +1,25 @@
+course_id,batch_code,instructor_code
+CS101,25021519,1001
+CS102,25021519,1001
+CS201,25021519,1002
+CS202,25021519,1002
+CS101,25021520,1001
+CS102,25021520,1001
+CS201,25021520,1002
+CS202,25021520,1002
+EE101,25031519,1004
+EE102,25031519,1004
+CS101,26021519,1001
+CS102,26021519,1001
+CS201,26021519,1002
+CS202,26021519,1002
+CS101,26021520,1001
+CS102,26021520,1001
+CS201,26021520,1002
+CS202,26021520,1002
+EE101,26031519,1004
+EE102,26031519,1004
+GEN101,25021519|25021520|25031519,1002
+GEN102,25021519|25021520|25031519,1006
+GEN101,26021519|26021520|26031519,1002
+GEN102,26021519|26021520|26031519,1006
diff --git a/data/dummy/courses/courses.csv b/data/dummy/courses/courses.csv
new file mode 100644
index 0000000..a88d24b
--- /dev/null
+++ b/data/dummy/courses/courses.csv
@@ -0,0 +1,9 @@
+course_id,course_name,course_type,credit_hours,is_general
+CS101,Programming Fundamentals,theory,3,no
+CS102,Programming Fundamentals Lab,lab,1,no
+CS201,Data Structures,theory,3,no
+CS202,Data Structures Lab,lab,1,no
+EE101,Basic Electronics,theory,3,no
+EE102,Basic Electronics Lab,lab,1,no
+GEN101,Functional English,theory,3,yes
+GEN102,Islamic Studies,theory,2,yes
diff --git a/data/dummy/generate_dummy_data.py b/data/dummy/generate_dummy_data.py
new file mode 100644
index 0000000..3ca3cd7
--- /dev/null
+++ b/data/dummy/generate_dummy_data.py
@@ -0,0 +1,160 @@
+"""
+Generates small illustrative dummy CSV datasets under data/dummy/ so the
+timetable template generator has something to schedule and render.
+
+Run once:
+    python data/dummy/generate_dummy_data.py
+"""
+
+import csv
+import os
+
+BASE_DIR = os.path.dirname(os.path.abspath(__file__))
+
+
+def write_csv(relative_path, header, rows):
+    path = os.path.join(BASE_DIR, relative_path)
+    os.makedirs(os.path.dirname(path), exist_ok=True)
+    with open(path, "w", newline="", encoding="utf-8") as f:
+        writer = csv.writer(f)
+        writer.writerow(header)
+        writer.writerows(rows)
+    print(f"wrote {len(rows)} rows -> {path}")
+
+
+def main():
+    # ---- blocks & rooms (Building/Block A only) ----
+    write_csv(
+        "blocks/blocks.csv",
+        ["block_id", "block_name"],
+        [["A", "Block A"]],
+    )
+
+    write_csv(
+        "blocks/rooms.csv",
+        ["room_id", "room_name", "block_id", "room_type", "capacity"],
+        [
+            ["A-101", "Room 101", "A", "classroom", 60],
+            ["A-102", "Room 102", "A", "classroom", 60],
+            ["A-103", "Room 103", "A", "classroom", 50],
+            ["A-201", "Room 201", "A", "classroom", 60],
+            ["A-L01", "Computer Lab 1", "A", "lab", 35],
+            ["A-L02", "Computer Lab 2", "A", "lab", 35],
+        ],
+    )
+
+    # ---- departments / programs / batches ----
+    # batch_code = session(2) + program_id(6)  e.g. 25021519
+    batches_25 = [
+        ["25021519", "CS", "BSCS", "25"],
+        ["25021520", "CS", "BSSE", "25"],
+        ["25031519", "EE", "BSEE", "25"],
+    ]
+    batches_26 = [
+        ["26021519", "CS", "BSCS", "26"],
+        ["26021520", "CS", "BSSE", "26"],
+        ["26031519", "EE", "BSEE", "26"],
+    ]
+
+    write_csv(
+        "batch_codes/25/batches.csv",
+        ["batch_code", "department", "program", "session"],
+        batches_25,
+    )
+    write_csv(
+        "batch_codes/26/batches.csv",
+        ["batch_code", "department", "program", "session"],
+        batches_26,
+    )
+
+    all_batches = batches_25 + batches_26
+
+    # ---- instructors (4-digit employee codes) ----
+    instructors = [
+        ["1001", "Dr. Ahsan Raza", "CS"],
+        ["1002", "Ms. Sana Tariq", "CS"],
+        ["1003", "Mr. Bilal Khan", "CS"],
+        ["1004", "Dr. Farah Iqbal", "EE"],
+        ["1005", "Mr. Usman Ali", "EE"],
+        ["1006", "Ms. Hira Shah", "CS"],
+    ]
+    write_csv(
+        "instructor/instructors.csv",
+        ["instructor_code", "instructor_name", "department"],
+        instructors,
+    )
+
+    # ---- courses ----
+    # is_general courses are shared across all batches of the same session
+    # (so they can be scheduled together on Tuesday with no clash).
+    courses = [
+        ["CS101", "Programming Fundamentals", "theory", 3, "no"],
+        ["CS102", "Programming Fundamentals Lab", "lab", 1, "no"],
+        ["CS201", "Data Structures", "theory", 3, "no"],
+        ["CS202", "Data Structures Lab", "lab", 1, "no"],
+        ["EE101", "Basic Electronics", "theory", 3, "no"],
+        ["EE102", "Basic Electronics Lab", "lab", 1, "no"],
+        ["GEN101", "Functional English", "theory", 3, "yes"],
+        ["GEN102", "Islamic Studies", "theory", 2, "yes"],
+    ]
+    write_csv(
+        "courses/courses.csv",
+        ["course_id", "course_name", "course_type", "credit_hours", "is_general"],
+        courses,
+    )
+
+    # ---- course offerings: which course is taught to which batch, by whom ----
+    # General courses (GEN101/GEN102) are offered once per session (25/26)
+    # and shared across every batch in that session.
+    offerings = []
+
+    dept_theory_lab = {
+        "CS": [("CS101", "CS102"), ("CS201", "CS202")],
+        "EE": [("EE101", "EE102")],
+    }
+    dept_instructors = {
+        "CS": ["1001", "1002", "1003", "1006"],
+        "EE": ["1004", "1005"],
+    }
+
+    for batch_code, department, program, session in all_batches:
+        pairs = dept_theory_lab[department]
+        instr_pool = dept_instructors[department]
+        for i, (theory_id, lab_id) in enumerate(pairs):
+            instr = instr_pool[i % len(instr_pool)]
+            offerings.append([theory_id, batch_code, instr])
+            offerings.append([lab_id, batch_code, instr])
+
+    # general courses: one offering per (course, session), batch_group lists
+    # every batch code sharing that session, separated by "|"
+    for session, batch_group in (
+        ("25", [b[0] for b in batches_25]),
+        ("26", [b[0] for b in batches_26]),
+    ):
+        offerings.append(["GEN101", "|".join(batch_group), "1002"])
+        offerings.append(["GEN102", "|".join(batch_group), "1006"])
+
+    write_csv(
+        "courses/course_offering.csv",
+        ["course_id", "batch_code", "instructor_code"],
+        offerings,
+    )
+
+    # ---- students (roll_no = batch_code-seq) ----
+    students = []
+    for batch_code, department, program, session in all_batches:
+        for seq in range(1, 6):  # 5 sample students per batch
+            roll_no = f"{batch_code}-{seq:03d}"
+            students.append([roll_no, batch_code, f"Student {roll_no}"])
+
+    write_csv(
+        "roll_no/students.csv",
+        ["roll_no", "batch_code", "student_name"],
+        students,
+    )
+
+    print("\nDummy data generation complete.")
+
+
+if __name__ == "__main__":
+    main()
diff --git a/data/dummy/instructor/instructors.csv b/data/dummy/instructor/instructors.csv
new file mode 100644
index 0000000..0ff9b94
--- /dev/null
+++ b/data/dummy/instructor/instructors.csv
@@ -0,0 +1,7 @@
+instructor_code,instructor_name,department
+1001,Dr. Ahsan Raza,CS
+1002,Ms. Sana Tariq,CS
+1003,Mr. Bilal Khan,CS
+1004,Dr. Farah Iqbal,EE
+1005,Mr. Usman Ali,EE
+1006,Ms. Hira Shah,CS
diff --git a/data/dummy/roll_no/students.csv b/data/dummy/roll_no/students.csv
new file mode 100644
index 0000000..31327da
--- /dev/null
+++ b/data/dummy/roll_no/students.csv
@@ -0,0 +1,31 @@
+roll_no,batch_code,student_name
+25021519-001,25021519,Student 25021519-001
+25021519-002,25021519,Student 25021519-002
+25021519-003,25021519,Student 25021519-003
+25021519-004,25021519,Student 25021519-004
+25021519-005,25021519,Student 25021519-005
+25021520-001,25021520,Student 25021520-001
+25021520-002,25021520,Student 25021520-002
+25021520-003,25021520,Student 25021520-003
+25021520-004,25021520,Student 25021520-004
+25021520-005,25021520,Student 25021520-005
+25031519-001,25031519,Student 25031519-001
+25031519-002,25031519,Student 25031519-002
+25031519-003,25031519,Student 25031519-003
+25031519-004,25031519,Student 25031519-004
+25031519-005,25031519,Student 25031519-005
+26021519-001,26021519,Student 26021519-001
+26021519-002,26021519,Student 26021519-002
+26021519-003,26021519,Student 26021519-003
+26021519-004,26021519,Student 26021519-004
+26021519-005,26021519,Student 26021519-005
+26021520-001,26021520,Student 26021520-001
+26021520-002,26021520,Student 26021520-002
+26021520-003,26021520,Student 26021520-003
+26021520-004,26021520,Student 26021520-004
+26021520-005,26021520,Student 26021520-005
+26031519-001,26031519,Student 26031519-001
+26031519-002,26031519,Student 26031519-002
+26031519-003,26031519,Student 26031519-003
+26031519-004,26031519,Student 26031519-004
+26031519-005,26031519,Student 26031519-005
diff --git a/requirements.txt b/requirements.txt
new file mode 100644
index 0000000..289437c
--- /dev/null
+++ b/requirements.txt
@@ -0,0 +1 @@
+openpyxl>=3.1
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diff --git a/templates/batch-wise/batch_wise_template.py b/templates/batch-wise/batch_wise_template.py
new file mode 100644
index 0000000..f887bcd
--- /dev/null
+++ b/templates/batch-wise/batch_wise_template.py
@@ -0,0 +1,49 @@
+"""Renders one timetable grid per batch."""
+
+import sys
+import os
+
+_ROOT = os.path.join(os.path.dirname(os.path.abspath(__file__)), "..", "..")
+sys.path.insert(0, os.path.join(_ROOT, "app"))
+sys.path.insert(0, os.path.join(_ROOT, "controller"))
+
+from xlsx_grid_helper import build_grid_sheet, new_workbook, save_workbook  # noqa: E402
+from template_controller import TIME_SLOTS as GRID_TIME_SLOTS  # noqa: E402
+
+
+def _sessions_for_batch(sessions, batch_code):
+    return [s for s in sessions if batch_code in s["batch_codes"]]
+
+
+def generate_batch_wise_templates(sessions, data, output_dir):
+    written = []
+    for batch in data["batches"]:
+        batch_code = batch["batch_code"]
+        batch_sessions = _sessions_for_batch(sessions, batch_code)
+
+        by_day_slot = {}
+        for s in batch_sessions:
+            for slot_index in s["slot_indices"]:
+                by_day_slot[(s["day"], slot_index)] = s
+
+        def cell_text(day, slot_index, by_day_slot=by_day_slot):
+            s = by_day_slot.get((day, slot_index))
+            if not s:
+                return ""
+            tag = " (Lab)" if s["course_type"] == "lab" else (" (General)" if s["is_general"] else "")
+            return f'{s["course_name"]}{tag}\n{s["instructor_name"]}\n{s["room_id"]}'
+
+        wb = new_workbook()
+        ws = wb.active
+        subtitle = f'{batch["department"]} - {batch["program"]} - Session {batch["session"]}'
+        build_grid_sheet(
+            ws,
+            title=f"Batch {batch_code}",
+            subtitle=subtitle,
+            time_slots=GRID_TIME_SLOTS,
+            sessions_by_day_slot=by_day_slot,
+            cell_text_fn=cell_text,
+        )
+        path = save_workbook(wb, output_dir, f"{batch_code}.xlsx")
+        written.append(path)
+    return written
diff --git a/templates/department-wise/department_wise_template.py b/templates/department-wise/department_wise_template.py
new file mode 100644
index 0000000..f8d679b
--- /dev/null
+++ b/templates/department-wise/department_wise_template.py
@@ -0,0 +1,54 @@
+"""Renders one timetable grid per department, aggregating all its batches."""
+
+import sys
+import os
+
+_ROOT = os.path.join(os.path.dirname(os.path.abspath(__file__)), "..", "..")
+sys.path.insert(0, os.path.join(_ROOT, "app"))
+sys.path.insert(0, os.path.join(_ROOT, "controller"))
+
+from xlsx_grid_helper import build_grid_sheet, new_workbook, save_workbook  # noqa: E402
+from template_controller import TIME_SLOTS as GRID_TIME_SLOTS  # noqa: E402
+
+
+def generate_department_wise_templates(sessions, data, output_dir):
+    departments = sorted({b["department"] for b in data["batches"]})
+    written = []
+
+    for department in departments:
+        dept_batch_codes = {b["batch_code"] for b in data["batches"] if b["department"] == department}
+        dept_sessions = [s for s in sessions if any(bc in dept_batch_codes for bc in s["batch_codes"])]
+
+        by_day_slot = {}
+        for s in dept_sessions:
+            for slot_index in s["slot_indices"]:
+                by_day_slot.setdefault((s["day"], slot_index), []).append(s)
+
+        def cell_text(day, slot_index, by_day_slot=by_day_slot):
+            entries = by_day_slot.get((day, slot_index))
+            if not entries:
+                return ""
+            lines = []
+            for s in entries:
+                tag = " (Lab)" if s["course_type"] == "lab" else (" (General)" if s["is_general"] else "")
+                batches = "+".join(s["batch_codes"])
+                lines.append(f'{s["course_name"]}{tag} [{batches}]\n{s["instructor_name"]} @ {s["room_id"]}')
+            return "\n---\n".join(lines)
+
+        # for fill-color purposes just use the first session in each cell
+        first_by_day_slot = {k: v[0] for k, v in by_day_slot.items()}
+
+        wb = new_workbook()
+        ws = wb.active
+        build_grid_sheet(
+            ws,
+            title=f"Department: {department}",
+            subtitle="All batches / programs",
+            time_slots=GRID_TIME_SLOTS,
+            sessions_by_day_slot=first_by_day_slot,
+            cell_text_fn=cell_text,
+        )
+        path = save_workbook(wb, output_dir, f"{department}.xlsx")
+        written.append(path)
+
+    return written
diff --git a/templates/room-wise/room_wise_template.py b/templates/room-wise/room_wise_template.py
new file mode 100644
index 0000000..8d5832f
--- /dev/null
+++ b/templates/room-wise/room_wise_template.py
@@ -0,0 +1,45 @@
+"""Renders one timetable grid per room."""
+
+import sys
+import os
+
+_ROOT = os.path.join(os.path.dirname(os.path.abspath(__file__)), "..", "..")
+sys.path.insert(0, os.path.join(_ROOT, "app"))
+sys.path.insert(0, os.path.join(_ROOT, "controller"))
+
+from xlsx_grid_helper import build_grid_sheet, new_workbook, save_workbook  # noqa: E402
+from template_controller import TIME_SLOTS as GRID_TIME_SLOTS  # noqa: E402
+
+
+def generate_room_wise_templates(sessions, data, output_dir):
+    written = []
+    for room in data["rooms"]:
+        room_id = room["room_id"]
+        room_sessions = [s for s in sessions if s["room_id"] == room_id]
+
+        by_day_slot = {}
+        for s in room_sessions:
+            for slot_index in s["slot_indices"]:
+                by_day_slot[(s["day"], slot_index)] = s
+
+        def cell_text(day, slot_index, by_day_slot=by_day_slot):
+            s = by_day_slot.get((day, slot_index))
+            if not s:
+                return ""
+            tag = " (Lab)" if s["course_type"] == "lab" else (" (General)" if s["is_general"] else "")
+            batches = "+".join(s["batch_codes"])
+            return f'{s["course_name"]}{tag}\n{batches}\n{s["instructor_name"]}'
+
+        wb = new_workbook()
+        ws = wb.active
+        build_grid_sheet(
+            ws,
+            title=f'{room["room_name"]} ({room_id})',
+            subtitle=f'Block {room["block_id"]} - {room["room_type"].title()} - Capacity {room["capacity"]}',
+            time_slots=GRID_TIME_SLOTS,
+            sessions_by_day_slot=by_day_slot,
+            cell_text_fn=cell_text,
+        )
+        path = save_workbook(wb, output_dir, f"{room_id}.xlsx")
+        written.append(path)
+    return written
diff --git a/templates/student-wise/student_wise_template.py b/templates/student-wise/student_wise_template.py
new file mode 100644
index 0000000..d07014d
--- /dev/null
+++ b/templates/student-wise/student_wise_template.py
@@ -0,0 +1,54 @@
+"""Renders one timetable grid per student (same grid as their batch, labeled per student)."""
+
+import sys
+import os
+
+_ROOT = os.path.join(os.path.dirname(os.path.abspath(__file__)), "..", "..")
+sys.path.insert(0, os.path.join(_ROOT, "app"))
+sys.path.insert(0, os.path.join(_ROOT, "controller"))
+
+from xlsx_grid_helper import build_grid_sheet, new_workbook, save_workbook  # noqa: E402
+from template_controller import TIME_SLOTS as GRID_TIME_SLOTS  # noqa: E402
+
+
+def _sessions_for_batch(sessions, batch_code):
+    return [s for s in sessions if batch_code in s["batch_codes"]]
+
+
+def generate_student_wise_templates(sessions, data, output_dir):
+    written = []
+    for student in data["students"]:
+        roll_no = student["roll_no"]
+        batch_code = student["batch_code"]
+        batch = data["batches_by_code"].get(batch_code)
+        student_sessions = _sessions_for_batch(sessions, batch_code)
+
+        by_day_slot = {}
+        for s in student_sessions:
+            for slot_index in s["slot_indices"]:
+                by_day_slot[(s["day"], slot_index)] = s
+
+        def cell_text(day, slot_index, by_day_slot=by_day_slot):
+            s = by_day_slot.get((day, slot_index))
+            if not s:
+                return ""
+            tag = " (Lab)" if s["course_type"] == "lab" else (" (General)" if s["is_general"] else "")
+            return f'{s["course_name"]}{tag}\n{s["instructor_name"]}\n{s["room_id"]}'
+
+        subtitle = f'{student["student_name"]} - Batch {batch_code}'
+        if batch:
+            subtitle += f' ({batch["department"]} - {batch["program"]})'
+
+        wb = new_workbook()
+        ws = wb.active
+        build_grid_sheet(
+            ws,
+            title=f"Roll No: {roll_no}",
+            subtitle=subtitle,
+            time_slots=GRID_TIME_SLOTS,
+            sessions_by_day_slot=by_day_slot,
+            cell_text_fn=cell_text,
+        )
+        path = save_workbook(wb, output_dir, f"{roll_no}.xlsx")
+        written.append(path)
+    return written
diff --git a/templates/teacher-wise/teacher_wise_template.py b/templates/teacher-wise/teacher_wise_template.py
new file mode 100644
index 0000000..46ae62f
--- /dev/null
+++ b/templates/teacher-wise/teacher_wise_template.py
@@ -0,0 +1,45 @@
+"""Renders one timetable grid per instructor."""
+
+import sys
+import os
+
+_ROOT = os.path.join(os.path.dirname(os.path.abspath(__file__)), "..", "..")
+sys.path.insert(0, os.path.join(_ROOT, "app"))
+sys.path.insert(0, os.path.join(_ROOT, "controller"))
+
+from xlsx_grid_helper import build_grid_sheet, new_workbook, save_workbook  # noqa: E402
+from template_controller import TIME_SLOTS as GRID_TIME_SLOTS  # noqa: E402
+
+
+def generate_teacher_wise_templates(sessions, data, output_dir):
+    written = []
+    for instructor in data["instructors"]:
+        code = instructor["instructor_code"]
+        instr_sessions = [s for s in sessions if s["instructor_code"] == code]
+
+        by_day_slot = {}
+        for s in instr_sessions:
+            for slot_index in s["slot_indices"]:
+                by_day_slot[(s["day"], slot_index)] = s
+
+        def cell_text(day, slot_index, by_day_slot=by_day_slot):
+            s = by_day_slot.get((day, slot_index))
+            if not s:
+                return ""
+            tag = " (Lab)" if s["course_type"] == "lab" else (" (General)" if s["is_general"] else "")
+            batches = "+".join(s["batch_codes"])
+            return f'{s["course_name"]}{tag}\n{batches}\n{s["room_id"]}'
+
+        wb = new_workbook()
+        ws = wb.active
+        build_grid_sheet(
+            ws,
+            title=f'{instructor["instructor_name"]} ({code})',
+            subtitle=f'Department: {instructor["department"]}',
+            time_slots=GRID_TIME_SLOTS,
+            sessions_by_day_slot=by_day_slot,
+            cell_text_fn=cell_text,
+        )
+        path = save_workbook(wb, output_dir, f"{code}.xlsx")
+        written.append(path)
+    return written