app.py

# --- START OF FLASK APP SCRIPT ---
from flask import Flask, render_template, request, send_file
import os
import convertapi # For PDF conversion
from docx import Document
from docx.shared import Pt, Cm, RGBColor
from docx.enum.text import WD_ALIGN_PARAGRAPH
from docx.enum.table import WD_TABLE_ALIGNMENT, WD_ALIGN_VERTICAL, WD_ROW_HEIGHT_RULE
from docx.oxml.ns import nsdecls
from docx.oxml import parse_xml
import math

# --- Configuration ---
# IMPORTANT: Replace 'YOUR_SECRET' with your actual ConvertAPI secret
# You can get one from https://www.convertapi.com/a
convertapi.api_secret = 'YOUR_SECRET'
# Define a temporary directory for generated files (optional, adjust as needed)
UPLOAD_FOLDER = 'temp_files'
if not os.path.exists(UPLOAD_FOLDER):
    os.makedirs(UPLOAD_FOLDER)


# --- Classe de génération de document (Version 4 - Finalized) ---
class EvaluationGymnique:
    def __init__(self):
        self.document = Document()
        self.document.sections[0].page_height = Cm(29.7)
        self.document.sections[0].page_width = Cm(21)
        self.document.sections[0].left_margin = Cm(1.5)
        self.document.sections[0].right_margin = Cm(1.5)
        self.document.sections[0].top_margin = Cm(1)
        self.document.sections[0].bottom_margin = Cm(1)

        self.centre_examen = "Centre d'examen"
        self.type_examen = "Bac Général"
        self.serie = "Série"
        self.etablissement = "Établissement"
        self.session = "2025"
        self.nom_candidat = "Candidat"
        self.elements_techniques = []
        self.appreciations = ["M", "PM", "NM", "NR"]
        self.base_font_size = 10
        self.base_header_font_size = 14
        self.base_row_height = 1.2
        self.table_font_size = 9
        self.available_height = 27.7
        self.fixed_elements_height = 15
        self.dynamic_font_size = self.base_font_size
        self.dynamic_header_font_size = self.base_header_font_size
        self.dynamic_table_font_size = self.table_font_size
        self.dynamic_row_height = self.base_row_height
        self.spacing_factor = 1.0

    def calculate_dynamic_sizing(self):
        num_elements = len(self.elements_techniques)
        estimated_table_height = (num_elements + 1) * self.base_row_height * 1.8
        available_space_for_table = self.available_height - self.fixed_elements_height
        if estimated_table_height > available_space_for_table and num_elements > 0:
            reduction_factor = max(0.5, 1 - (max(0, num_elements - 8) * 0.05))
            self.dynamic_font_size = max(self.base_font_size * reduction_factor, 6)
            self.dynamic_header_font_size = max(self.base_header_font_size * reduction_factor, 9)
            self.dynamic_table_font_size = max(self.table_font_size * reduction_factor, 6)
            self.dynamic_row_height = max(self.base_row_height * (reduction_factor + 0.2), 0.9)
            self.spacing_factor = max(reduction_factor, 0.3)
            # print(f"Adjusting sizes for {num_elements} elements. Factor: {reduction_factor:.2f}") # Optional debug
        else:
            self.dynamic_font_size = self.base_font_size
            self.dynamic_header_font_size = self.base_header_font_size
            self.dynamic_table_font_size = self.table_font_size
            self.dynamic_row_height = self.base_row_height
            self.spacing_factor = 1.0
            # print(f"Using base sizes for {num_elements} elements.") # Optional debug

    def ajouter_entete_colore(self):
        header_paragraph = self.document.add_paragraph(); header_paragraph.alignment = WD_ALIGN_PARAGRAPH.CENTER; header_paragraph.space_after = Pt(6 * self.spacing_factor)
        header_run = header_paragraph.add_run("ÉVALUATION GYMNASTIQUE"); header_run.bold = True; header_run.font.size = Pt(self.dynamic_header_font_size); header_run.font.color.rgb = RGBColor(0, 32, 96)
        header_table = self.document.add_table(rows=3, cols=2); header_table.style = 'Table Grid'; header_table.autofit = False
        page_width_cm = self.document.sections[0].page_width.cm; left_margin_cm = self.document.sections[0].left_margin.cm; right_margin_cm = self.document.sections[0].right_margin.cm
        available_table_width = page_width_cm - left_margin_cm - right_margin_cm
        col_widths = [available_table_width * 0.55, available_table_width * 0.45]
        for i, width in enumerate(col_widths):
            for cell in header_table.columns[i].cells: cell.width = Cm(width)
        row_height_cm = max(0.6, 0.8 * self.spacing_factor)
        for row in header_table.rows: row.height = Cm(row_height_cm)
        for row in header_table.rows:
            for cell in row.cells:
                cell.vertical_alignment = WD_ALIGN_VERTICAL.CENTER; shading_elm = parse_xml(f'<w:shd {nsdecls("w")} w:fill="D9E2F3"/>'); cell._tc.get_or_add_tcPr().append(shading_elm)
                for paragraph in cell.paragraphs: paragraph.paragraph_format.space_before = Pt(0); paragraph.paragraph_format.space_after = Pt(0)
        cell = header_table.cell(0, 0); p = cell.paragraphs[0]; run = p.add_run("Centre d'examen: "); run.bold = True; run.font.size = Pt(self.dynamic_font_size); run.font.color.rgb = RGBColor(0, 32, 96); p.add_run(self.centre_examen).font.size = Pt(self.dynamic_font_size)
        cell = header_table.cell(0, 1); p = cell.paragraphs[0]; run = p.add_run("Examen: "); run.bold = True; run.font.size = Pt(self.dynamic_font_size); run.font.color.rgb = RGBColor(0, 32, 96); p.add_run(self.type_examen).font.size = Pt(self.dynamic_font_size)
        cell = header_table.cell(1, 0); p = cell.paragraphs[0]; run = p.add_run("Série: "); run.bold = True; run.font.size = Pt(self.dynamic_font_size); run.font.color.rgb = RGBColor(0, 32, 96); p.add_run(self.serie).font.size = Pt(self.dynamic_font_size)
        cell = header_table.cell(1, 1); p = cell.paragraphs[0]; run = p.add_run("Établissement: "); run.bold = True; run.font.size = Pt(self.dynamic_font_size); run.font.color.rgb = RGBColor(0, 32, 96); p.add_run(self.etablissement).font.size = Pt(self.dynamic_font_size)
        cell = header_table.cell(2, 0); p = cell.paragraphs[0]; run = p.add_run("Session: "); run.bold = True; run.font.size = Pt(self.dynamic_font_size); run.font.color.rgb = RGBColor(0, 32, 96); p.add_run(self.session).font.size = Pt(self.dynamic_font_size)
        cell = header_table.cell(2, 1); p = cell.paragraphs[0]; run = p.add_run("Candidat: "); run.bold = True; run.font.size = Pt(self.dynamic_font_size); run.font.color.rgb = RGBColor(0, 32, 96); p.add_run(self.nom_candidat).font.size = Pt(self.dynamic_font_size)
        self.document.add_paragraph().paragraph_format.space_after = Pt(4 * self.spacing_factor)

    def creer_tableau_elements(self):
        num_elements = len(self.elements_techniques);
        if num_elements == 0: return
        table = self.document.add_table(rows=num_elements + 1, cols=5); table.style = 'Table Grid'; table.alignment = WD_TABLE_ALIGNMENT.CENTER; table.autofit = False
        page_width_cm = self.document.sections[0].page_width.cm; left_margin_cm = self.document.sections[0].left_margin.cm; right_margin_cm = self.document.sections[0].right_margin.cm
        available_table_width = page_width_cm - left_margin_cm - right_margin_cm
        total_prop = 8 + 3 + 2 + 2.5 + 2.5
        col_widths_cm = [available_table_width * (p / total_prop) for p in [8, 3, 2, 2.5, 2.5]]
        for i, width in enumerate(col_widths_cm):
            for cell in table.columns[i].cells: cell.width = Cm(width)
        min_row_height_cm = max(0.9, self.dynamic_row_height)
        for row in table.rows:
            row.height_rule = WD_ROW_HEIGHT_RULE.AT_LEAST; row.height = Cm(min_row_height_cm)
            for cell in row.cells:
                 cell.vertical_alignment = WD_ALIGN_VERTICAL.CENTER
                 for p in cell.paragraphs: p.paragraph_format.space_before = Pt(0); p.paragraph_format.space_after = Pt(0)
        header_row = table.rows[0]
        for cell in header_row.cells: shading_elm = parse_xml(f'<w:shd {nsdecls("w")} w:fill="BDD7EE"/>'); cell._tc.get_or_add_tcPr().append(shading_elm)
        headers = ["ELEMENTS TECHNIQUES", "CATEGORIES D'ELEMENTS TECHNIQUES ET PONDERATION", "", "APPRECIATIONS", "POINTS Accordés"]
        for i, header in enumerate(headers):
            cell = table.cell(0, i); p = cell.paragraphs[0]; p.clear(); p.add_run(header); p.alignment = WD_ALIGN_PARAGRAPH.CENTER
            run = p.runs[0]; run.bold = True; run.font.size = Pt(self.dynamic_table_font_size); run.font.color.rgb = RGBColor(0, 32, 96)
        try: table.cell(0, 1).merge(table.cell(0, 2))
        except Exception as e: print(f"Error merging cells: {e}") # Optional logging
        for i, element in enumerate(self.elements_techniques, 1):
            if i >= len(table.rows): continue
            element_cell = table.cell(i, 0); supplementary_text = "\nExécution:\nAmplitude:\nRéception:"
            element_cell.text = f'{element["nom"]}{supplementary_text}'; element_cell.vertical_alignment = WD_ALIGN_VERTICAL.TOP
            if element_cell.paragraphs and element_cell.paragraphs[0].runs: run = element_cell.paragraphs[0].runs[0]
            else: run = element_cell.paragraphs[0].add_run(f'{element["nom"]}{supplementary_text}')
            run.bold = False; run.font.size = Pt(self.dynamic_table_font_size)
            for p in element_cell.paragraphs: p.paragraph_format.space_before = Pt(0); p.paragraph_format.space_after = Pt(0)
            categorie_cell = table.cell(i, 1); categorie_cell.text = element["categorie"]; categorie_cell.paragraphs[0].alignment = WD_ALIGN_PARAGRAPH.CENTER
            if categorie_cell.paragraphs[0].runs: run = categorie_cell.paragraphs[0].runs[0]
            else: run = categorie_cell.paragraphs[0].add_run(element["categorie"])
            run.bold = True; run.font.size = Pt(self.dynamic_table_font_size); run.italic = True
            points_cell = table.cell(i, 2); points_cell.text = str(element["points"]); points_cell.paragraphs[0].alignment = WD_ALIGN_PARAGRAPH.CENTER
            if points_cell.paragraphs[0].runs: run = points_cell.paragraphs[0].runs[0]
            else: run = points_cell.paragraphs[0].add_run(str(element["points"]))
            run.bold = True; run.font.size = Pt(self.dynamic_table_font_size); run.italic = True
            appreciation_cell = table.cell(i, 3); appreciation_cell.text = ""
            points_accordes_cell = table.cell(i, 4); points_accordes_cell.text = ""
        self.document.add_paragraph().paragraph_format.space_after = Pt(6 * self.spacing_factor)

    def ajouter_note_jury(self):
        para = self.document.add_paragraph(); para.paragraph_format.space_before = Pt(4 * self.spacing_factor); para.paragraph_format.space_after = Pt(4 * self.spacing_factor)
        run = para.add_run("NB1 : Zone réservée aux membres du jury ! Le jury cochera le point correspondant au niveau de réalisation de l'élément gymnique par le candidat.")
        run.bold = True; run.font.color.rgb = RGBColor(255, 0, 0); run.font.size = Pt(max(self.dynamic_font_size - 2, 5.5))

    def creer_tableau_recapitulatif(self):
        note_table = self.document.add_table(rows=3, cols=13); note_table.style = 'Table Grid'; note_table.alignment = WD_TABLE_ALIGNMENT.CENTER; note_table.autofit = False
        page_width_cm = self.document.sections[0].page_width.cm; left_margin_cm = self.document.sections[0].left_margin.cm; right_margin_cm = self.document.sections[0].right_margin.cm
        available_recap_width = page_width_cm - left_margin_cm - right_margin_cm
        width_A_E_pair = available_recap_width * (1.2 / 13.0); width_final_single = available_recap_width * (1.0 / 13.0)
        col_widths_recap = [];
        for _ in range(5): col_widths_recap.extend([width_A_E_pair / 2, width_A_E_pair / 2])
        col_widths_recap.extend([width_final_single, width_final_single, width_final_single])
        current_total_width = sum(col_widths_recap); width_adjustment = (available_recap_width - current_total_width) / len(col_widths_recap)
        for i, width in enumerate(col_widths_recap):
            adjusted_width = max(0.5, width + width_adjustment);
            for cell in note_table.columns[i].cells: cell.width = Cm(adjusted_width)
        row_height_cm = max(0.5, 0.6 * self.spacing_factor)
        for row in note_table.rows:
            row.height = Cm(row_height_cm)
            for cell in row.cells: cell.vertical_alignment = WD_ALIGN_VERTICAL.CENTER;
            for p in cell.paragraphs: p.paragraph_format.space_before = Pt(0); p.paragraph_format.space_after = Pt(0)
        for cell in note_table.rows[0].cells: shading_elm = parse_xml(f'<w:shd {nsdecls("w")} w:fill="BDD7EE"/>'); cell._tc.get_or_add_tcPr().append(shading_elm)
        recap_font_size = max(self.dynamic_table_font_size - 1, 5)
        type_data = [("A", "1pt"), ("B", "1,5pt"), ("C", "2pts"), ("D", "2,5pts"), ("E", "3pts")]
        for col, (type_lettre, points) in enumerate(type_data):
            idx = col * 2
            if idx + 1 < len(note_table.columns):
                cell = note_table.cell(0, idx)
                try:
                    cell.merge(note_table.cell(0, idx + 1)); p = cell.paragraphs[0]; p.clear(); p.add_run(f"Type {type_lettre}\n{points}"); p.alignment = WD_ALIGN_PARAGRAPH.CENTER
                    for run in p.runs: run.bold = True; run.font.size = Pt(recap_font_size); run.font.color.rgb = RGBColor(0, 32, 96)
                except Exception as e: print(f"Error merging cells at index {idx}: {e}") # Optional logging
        final_headers = [("ROV", "2pts"), ("Projet", "2pts"), ("Réalisation", "16pts")]
        for col_offset, (titre, points) in enumerate(final_headers):
            col = 10 + col_offset
            if col < len(note_table.columns):
                cell = note_table.cell(0, col); p = cell.paragraphs[0]; p.clear(); p.add_run(f"{titre}\n{points}"); p.alignment = WD_ALIGN_PARAGRAPH.CENTER
                for run in p.runs: run.bold = True; run.font.size = Pt(recap_font_size); run.font.color.rgb = RGBColor(0, 32, 96)
        for col in range(5):
            idx = col * 2
            if idx + 1 < len(note_table.columns):
                neg_cell = note_table.cell(1, idx); p_neg = neg_cell.paragraphs[0]; p_neg.clear(); run_neg = p_neg.add_run("NEG"); run_neg.italic = True; run_neg.font.size = Pt(recap_font_size); p_neg.alignment = WD_ALIGN_PARAGRAPH.CENTER
                note_cell = note_table.cell(1, idx + 1); p_note = note_cell.paragraphs[0]; p_note.clear(); run_note = p_note.add_run("Note"); run_note.italic = True; run_note.font.size = Pt(recap_font_size); p_note.alignment = WD_ALIGN_PARAGRAPH.CENTER
        for col in range(10, 13):
            if col < len(note_table.columns):
                cell = note_table.cell(1, col); p = cell.paragraphs[0]; p.clear(); run = p.add_run("Note"); run.italic = True; run.font.size = Pt(recap_font_size); p.alignment = WD_ALIGN_PARAGRAPH.CENTER
        self.document.add_paragraph().paragraph_format.space_after = Pt(6 * self.spacing_factor)

    def ajouter_note_candidat_avec_cadre(self):
        note_table = self.document.add_table(rows=1, cols=1); note_table.style = 'Table Grid'; note_table.alignment = WD_TABLE_ALIGNMENT.CENTER; note_table.autofit = True
        cell = note_table.cell(0, 0); shading_elm = parse_xml(f'<w:shd {nsdecls("w")} w:fill="C6E0B4"/>'); cell._tc.get_or_add_tcPr().append(shading_elm)
        p = cell.paragraphs[0]; p.paragraph_format.space_before = Pt(2); p.paragraph_format.space_after = Pt(2)
        font_size = max(6 * self.spacing_factor, 5)
        run = p.add_run("NB2: Après le choix des catégories d'éléments gymniques par le candidat, ce dernier remplira la colonne de pointage selon l'orientation suivante: A (0.25; 0.5; 0.75; 1) B (0.25; 0.5; 0.75; 1; 1.25; 1.5) C (0.5; 0.75; 1; 1.25; 1.5; 2) D (0.75; 1; 1.25; 1.5; 2; 2.5) et E (0.75; 1; 1.5; 2; 2.5; 3) également, le candidat devra fournir 2 copies de son projet sur une page! (appréciations: NR, NM, PM, M).")
        run.italic = True; run.font.size = Pt(font_size)
        self.document.add_paragraph().paragraph_format.space_after = Pt(8 * self.spacing_factor)

    def ajouter_zone_note(self):
        para_note_label = self.document.add_paragraph(); para_note_label.alignment = WD_ALIGN_PARAGRAPH.RIGHT; para_note_label.paragraph_format.space_after = Pt(1); para_note_label.paragraph_format.space_before = Pt(4 * self.spacing_factor)
        run = para_note_label.add_run("Note finale/20"); run.bold = True; run.font.size = Pt(self.dynamic_table_font_size + 1); run.font.color.rgb = RGBColor(0, 32, 96)
        box_table = self.document.add_table(rows=1, cols=1); box_table.style = 'Table Grid'; box_table.alignment = WD_TABLE_ALIGNMENT.RIGHT
        box_size = Cm(1.5); cell = box_table.cell(0, 0); cell.width = box_size; box_table.rows[0].height = box_size
        cell.vertical_alignment = WD_ALIGN_VERTICAL.CENTER; cell.text = ""
        if cell.paragraphs: cell.paragraphs[0].text = ""; cell.paragraphs[0].paragraph_format.space_before = Pt(0); cell.paragraphs[0].paragraph_format.space_after = Pt(0)
        self.document.add_paragraph().paragraph_format.space_after = Pt(8 * self.spacing_factor)

    def ajouter_lignes_correcteurs(self):
        num_elements = len(self.elements_techniques); use_compact_mode = num_elements > 12
        if use_compact_mode:
            para = self.document.add_paragraph(); para.paragraph_format.space_before = Pt(4 * self.spacing_factor); para.paragraph_format.space_after = Pt(4 * self.spacing_factor)
            run = para.add_run("Correcteurs: "); run.bold = True; run.font.size = Pt(self.dynamic_font_size); para.add_run("Projet / Principal / ROV").font.size = Pt(self.dynamic_font_size); para.add_run("\n" + "." * 30)
        else:
            for role in ["Projet", "Principal", "ROV"]:
                para = self.document.add_paragraph(); para.paragraph_format.space_before = Pt(3 * self.spacing_factor); para.paragraph_format.space_after = Pt(1 * self.spacing_factor)
                run = para.add_run(f"Correcteur {role} : "); run.bold = True; run.font.size = Pt(self.dynamic_font_size)
                chars_per_cm_estimate = 3; line_length_cm = 10; points_count = int(line_length_cm * chars_per_cm_estimate)
                points_count = max(20, points_count); points_count = int(points_count * (self.dynamic_font_size / 10.0) * self.spacing_factor); points_count = max(15, points_count)
                para.add_run("." * points_count).font.size = Pt(self.dynamic_font_size)

    def modifier_centre_examen(self, nom): self.centre_examen = nom
    def modifier_type_examen(self, type_examen): self.type_examen = type_examen
    def modifier_serie(self, serie): self.serie = serie
    def modifier_etablissement(self, nom): self.etablissement = nom
    def modifier_session(self, annee): self.session = annee
    def modifier_candidat(self, nom): self.nom_candidat = nom
    def ajouter_element(self, nom, categorie, points):
        try: point_value = float(points)
        except (ValueError, TypeError): print(f"Warning: Invalid points value '{points}' for element '{nom}'. Using 0.0."); point_value = 0.0
        self.elements_techniques.append({"nom": nom, "categorie": categorie, "points": point_value})

    def generer_document(self, nom_fichier="evaluation_gymnastique.docx"):
        self.calculate_dynamic_sizing(); self.ajouter_entete_colore(); self.creer_tableau_elements(); self.ajouter_note_jury(); self.creer_tableau_recapitulatif(); self.ajouter_lignes_correcteurs(); self.ajouter_zone_note(); self.ajouter_note_candidat_avec_cadre()
        try:
            self.document.save(nom_fichier); print(f"Document '{nom_fichier}' generated successfully.")
        except Exception as e: print(f"Error saving document: {e}")
        return nom_fichier

# --- Flask Application ---
app = Flask(__name__)
app.config['UPLOAD_FOLDER'] = UPLOAD_FOLDER

@app.route("/eps", methods=["GET", "POST"]) # Changed route back to /eps as in original
def index():
    if request.method == "POST":
        try:
            # --- Récupération des informations depuis le formulaire ---
            centre_examen = request.form.get("centre_examen", "Centre d'examen")
            type_examen = request.form.get("type_examen", "Bac Général")
            serie = request.form.get("serie", "Série")
            etablissement = request.form.get("etablissement", "Établissement")
            session_value = request.form.get("session", "2025")
            nom_candidat = request.form.get("nom_candidat", "Candidat")
            output_format = request.form.get("format", "docx") # Get format preference

            # --- Création et configuration du document ---
            evaluation = EvaluationGymnique()
            evaluation.modifier_centre_examen(centre_examen)
            evaluation.modifier_type_examen(type_examen)
            evaluation.modifier_serie(serie)
            evaluation.modifier_etablissement(etablissement)
            evaluation.modifier_session(session_value)
            evaluation.modifier_candidat(nom_candidat)

            # --- Récupération des éléments techniques ---
            element_names = request.form.getlist("new_element_name")
            element_categories = request.form.getlist("new_element_categorie")
            element_points = request.form.getlist("new_element_points")

            print(f"Received names: {element_names}") # Debug print
            print(f"Received categories: {element_categories}") # Debug print
            print(f"Received points: {element_points}") # Debug print


            for name, cat, pts in zip(element_names, element_categories, element_points):
                # Add element only if all three fields have some value
                if name and cat and pts:
                    evaluation.ajouter_element(name, cat, pts)
                else:
                    print(f"Skipping incomplete element: Name='{name}', Cat='{cat}', Pts='{pts}'") # Debug print


            # --- Génération du document DOCX ---
            # Use a unique filename in the temp folder to avoid conflicts
            base_filename = f"evaluation_{nom_candidat.replace(' ', '_')}_{session_value}"
            docx_filename = os.path.join(app.config['UPLOAD_FOLDER'], f"{base_filename}.docx")
            evaluation.generer_document(docx_filename)

            # --- Conversion et envoi ---
            if output_format == "pdf":
                 if convertapi.api_secret == 'YOUR_SECRET':
                      # Handle case where API secret is not set
                      return "Error: ConvertAPI secret not set in the script. Cannot generate PDF.", 500

                 print(f"Attempting PDF conversion for {docx_filename}...")
                 try:
                    result = convertapi.convert('pdf', { 'File': docx_filename }, from_format = 'docx')
                    pdf_filename_base = f"{base_filename}.pdf"
                    pdf_filepath = os.path.join(app.config['UPLOAD_FOLDER'], pdf_filename_base)
                    result.save_files(pdf_filepath)
                    print(f"PDF saved to {pdf_filepath}")
                    # Send the generated PDF
                    return send_file(pdf_filepath, as_attachment=True, download_name=pdf_filename_base)
                 except Exception as e:
                      print(f"Error during PDF conversion: {e}")
                      # Provide feedback to the user
                      return f"Error during PDF conversion: {e}. Check ConvertAPI credits or file.", 500
                 finally:
                      # Clean up the original docx file after attempting conversion
                      if os.path.exists(docx_filename):
                          os.remove(docx_filename)

            else: # Send the generated DOCX
                # Ensure the download name doesn't include the folder path
                return send_file(docx_filename, as_attachment=True, download_name=f"{base_filename}.docx")

        except Exception as e:
            # Log the general error
            print(f"An error occurred during POST request processing: {e}")
            # Provide generic error feedback
            return f"An internal error occurred: {e}", 500

    # --- Affichage du formulaire (GET request) ---
    return render_template("index.html")

if __name__ == "__main__":
    # Make sure the UPLOAD_FOLDER exists when running directly
    if not os.path.exists(UPLOAD_FOLDER):
        os.makedirs(UPLOAD_FOLDER)
    app.run(debug=True) # debug=True is helpful during development

# --- END OF FLASK APP SCRIPT ---