app.py

# --- START OF COMPLETE FLASK APP SCRIPT (v5) ---
from flask import Flask, render_template, request, send_file, flash, redirect, url_for
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
import traceback # For detailed error logging

# --- Configuration ---
# Use the provided ConvertAPI secret
convertapi.api_secret = 'secret_8wCI6pgOP9AxLVJG'
convertapi.api_credentials = 'secret_8wCI6pgOP9AxLVJG'
# Define a temporary directory for generated files
UPLOAD_FOLDER = 'temp_files'
if not os.path.exists(UPLOAD_FOLDER):
    try:
        os.makedirs(UPLOAD_FOLDER)
    except OSError as e:
        print(f"Error creating directory {UPLOAD_FOLDER}: {e}")
        # Handle the error appropriately, maybe exit or use a default path


# --- Classe de génération de document (v5 - Finalized for Flask) ---
class EvaluationGymnique:
    def __init__(self):
        self.document = Document()
        # --- Document Setup (Margins, Page Size) ---
        try:
            section = self.document.sections[0]
            section.page_height = Cm(29.7)
            section.page_width = Cm(21)
            section.left_margin = Cm(1.5)
            section.right_margin = Cm(1.5)
            section.top_margin = Cm(1)
            section.bottom_margin = Cm(1)
        except Exception as e:
            print(f"Error setting up document sections: {e}")


        # --- Default Properties ---
        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"] # Not directly used in output, but good to have

        # --- Layout Parameters ---
        self.base_font_size = 10
        self.base_header_font_size = 14
        self.base_row_height = 1.1 # Adjusted base height
        self.table_font_size = 9
        self.available_height = 27.7 # A4 height minus margins
        self.fixed_elements_height = 15 # Estimated height of non-main-table elements

        # --- Dynamic Sizes (Initialized) ---
        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):
        """Adjusts font sizes and spacing based on the number of elements."""
        num_elements = len(self.elements_techniques)
        # Estimate table height considering element name + 1 newline
        estimated_table_height = (num_elements + 1) * self.base_row_height * 1.3 # Moderate multiplier

        available_space_for_table = self.available_height - self.fixed_elements_height

        if estimated_table_height > available_space_for_table and num_elements > 5: # Start adjusting after 5 elements
            # More elements -> smaller sizes
            reduction_factor = max(0.6, 1 - (max(0, num_elements - 5) * 0.04)) # Gradual reduction
            self.dynamic_font_size = max(self.base_font_size * reduction_factor, 7) # Min 7pt
            self.dynamic_header_font_size = max(self.base_header_font_size * reduction_factor, 10) # Min 10pt
            self.dynamic_table_font_size = max(self.table_font_size * reduction_factor, 7) # Min 7pt
            # Reduce row height less aggressively
            self.dynamic_row_height = max(self.base_row_height * (reduction_factor + 0.1), 0.8) # Min 0.8cm
            self.spacing_factor = max(reduction_factor, 0.4) # Min 0.4 factor
            # print(f"Adjusting sizes for {num_elements} elements. Factor: {reduction_factor:.2f}")
        else:
            # Use base sizes if enough space or few elements
            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.")

    def _set_cell_shading(self, cell, fill_color):
        """Helper to set cell background color."""
        try:
            shading_elm = parse_xml(f'<w:shd {nsdecls("w")} w:fill="{fill_color}"/>')
            cell._tc.get_or_add_tcPr().append(shading_elm)
        except Exception as e:
            print(f"Error setting cell shading: {e}")

    def _configure_cell(self, cell, text, bold=False, italic=False, font_size=None,
                         color_rgb=None, alignment=WD_ALIGN_PARAGRAPH.LEFT,
                         v_alignment=WD_ALIGN_VERTICAL.CENTER):
        """Helper to configure cell text and formatting."""
        cell.text = text
        cell.vertical_alignment = v_alignment
        paragraph = cell.paragraphs[0]
        paragraph.alignment = alignment
        paragraph.paragraph_format.space_before = Pt(0)
        paragraph.paragraph_format.space_after = Pt(0)
        if paragraph.runs:
            run = paragraph.runs[0]
            run.bold = bold
            run.italic = italic
            if font_size:
                run.font.size = Pt(font_size)
            if color_rgb:
                run.font.color.rgb = color_rgb
        return paragraph # Return paragraph for potential further modification

    def ajouter_entete_colore(self):
        """Adds the colored header section."""
        try:
            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) # Dark Blue

            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 cell in row.cells:
                    cell.vertical_alignment = WD_ALIGN_VERTICAL.CENTER
                    self._set_cell_shading(cell, "D9E2F3") # Light Blue Shading
                    for p in cell.paragraphs: p.paragraph_format.space_before = Pt(0); p.paragraph_format.space_after = Pt(0)

            header_info = [
                [("Centre d'examen: ", self.centre_examen), ("Examen: ", self.type_examen)],
                [("Série: ", self.serie), ("Établissement: ", self.etablissement)],
                [("Session: ", self.session), ("Candidat: ", self.nom_candidat)]
            ]
            text_color = RGBColor(0, 32, 96) # Dark Blue

            for r, row_data in enumerate(header_info):
                for c, (label, value) in enumerate(row_data):
                    cell = header_table.cell(r, c)
                    p = cell.paragraphs[0]; p.clear()
                    run_label = p.add_run(label); run_label.bold = True; run_label.font.size = Pt(self.dynamic_font_size); run_label.font.color.rgb = text_color
                    run_value = p.add_run(value); run_value.font.size = Pt(self.dynamic_font_size)

            self.document.add_paragraph().paragraph_format.space_after = Pt(4 * self.spacing_factor)

        except Exception as e:
            print(f"Error adding header: {e}")
            traceback.print_exc()


    def creer_tableau_elements(self):
        """Creates the main table for technical elements."""
        try:
            num_elements = len(self.elements_techniques)
            if num_elements == 0: return # Don't create if empty

            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(0.8, 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]
            header_color = RGBColor(0, 32, 96)
            headers_config = [
                ("ELEMENTS TECHNIQUES", {}),
                ("CATEGORIES D'ELEMENTS TECHNIQUES ET PONDERATION", {"bold": True, "font_size": self.dynamic_table_font_size, "color_rgb": header_color, "alignment": WD_ALIGN_PARAGRAPH.CENTER}),
                ("", {}), # Merged cell placeholder
                ("APPRECIATIONS", {"bold": True, "font_size": self.dynamic_table_font_size, "color_rgb": header_color, "alignment": WD_ALIGN_PARAGRAPH.CENTER}),
                ("POINTS Accordés", {"bold": True, "font_size": self.dynamic_table_font_size, "color_rgb": header_color, "alignment": WD_ALIGN_PARAGRAPH.CENTER})
            ]
            for i, (text, config) in enumerate(headers_config):
                 cell = header_row.cells[i]
                 self._set_cell_shading(cell, "BDD7EE") # Header Shading Blue
                 if i != 2: # Skip placeholder for merged cell text config
                      self._configure_cell(cell, text, **config)

            try: table.cell(0, 1).merge(table.cell(0, 2))
            except Exception as merge_err: print(f"Error merging header cells: {merge_err}")

            # Add element rows
            for i, element in enumerate(self.elements_techniques, 1):
                if i >= len(table.rows): continue # Safety check

                # Col 0: Element Name (with single newline)
                element_cell = table.cell(i, 0)
                self._configure_cell(element_cell, f'{element["nom"]}\n', # ADDED SINGLE \n
                                     font_size=self.dynamic_table_font_size,
                                     alignment=WD_ALIGN_PARAGRAPH.LEFT,
                                     v_alignment=WD_ALIGN_VERTICAL.CENTER) # Center align vertically

                # Col 1: Category
                self._configure_cell(table.cell(i, 1), element["categorie"], bold=True, italic=True,
                                     font_size=self.dynamic_table_font_size, alignment=WD_ALIGN_PARAGRAPH.CENTER)

                # Col 2: Points Max
                self._configure_cell(table.cell(i, 2), str(element["points"]), bold=True, italic=True,
                                     font_size=self.dynamic_table_font_size, alignment=WD_ALIGN_PARAGRAPH.CENTER)

                # Col 3: Appreciations (Empty)
                self._configure_cell(table.cell(i, 3), "", font_size=self.dynamic_table_font_size)
                # Col 4: Points Accordés (Empty)
                self._configure_cell(table.cell(i, 4), "", font_size=self.dynamic_table_font_size)

            self.document.add_paragraph().paragraph_format.space_after = Pt(6 * self.spacing_factor)

        except Exception as e:
            print(f"Error creating elements table: {e}")
            traceback.print_exc()


    def ajouter_note_jury(self):
        """Adds the NB1 note for the jury."""
        try:
            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, 6)) # Min 6pt
        except Exception as e:
            print(f"Error adding jury note: {e}")


    def creer_tableau_recapitulatif(self):
        """Creates the summary table for scores."""
        try:
            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)

            header_color = RGBColor(0, 32, 96)
            header_fill = "BDD7EE"
            recap_font_size = max(self.dynamic_table_font_size - 1, 6) # Min 6pt

            for cell in note_table.rows[0].cells: self._set_cell_shading(cell, header_fill)

            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 < 13:
                    cell = note_table.cell(0, idx)
                    try:
                        cell.merge(note_table.cell(0, idx + 1))
                        self._configure_cell(cell, f"Type {type_lettre}\n{points}", bold=True, font_size=recap_font_size, color_rgb=header_color, alignment=WD_ALIGN_PARAGRAPH.CENTER)
                    except Exception as e: print(f"Error merging recap cells at index {idx}: {e}")

            final_headers = [("ROV", "2pts"), ("Projet", "2pts"), ("Réalisation", "16pts")]
            for col_offset, (titre, points) in enumerate(final_headers):
                col = 10 + col_offset
                if col < 13:
                    self._configure_cell(note_table.cell(0, col), f"{titre}\n{points}", bold=True, font_size=recap_font_size, color_rgb=header_color, alignment=WD_ALIGN_PARAGRAPH.CENTER)

            # Row 2: NEG / Note labels
            for col in range(5):
                idx = col * 2
                if idx + 1 < 13:
                    self._configure_cell(note_table.cell(1, idx), "NEG", italic=True, font_size=recap_font_size, alignment=WD_ALIGN_PARAGRAPH.CENTER)
                    self._configure_cell(note_table.cell(1, idx + 1), "Note", italic=True, font_size=recap_font_size, alignment=WD_ALIGN_PARAGRAPH.CENTER)
            for col in range(10, 13):
                 if col < 13:
                      self._configure_cell(note_table.cell(1, col), "Note", italic=True, font_size=recap_font_size, alignment=WD_ALIGN_PARAGRAPH.CENTER)

            # Row 3 is left empty for scores

            self.document.add_paragraph().paragraph_format.space_after = Pt(6 * self.spacing_factor)

        except Exception as e:
            print(f"Error creating recap table: {e}")
            traceback.print_exc()


    def ajouter_note_candidat_avec_cadre(self):
        """Adds the NB2 instructions in a green box."""
        try:
            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); self._set_cell_shading(cell, "C6E0B4") # Light Green Shading
            p = cell.paragraphs[0]; p.paragraph_format.space_before = Pt(2); p.paragraph_format.space_after = Pt(2)
            font_size = max(7 * self.spacing_factor, 6) # Min 6pt for readability
            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)
        except Exception as e:
            print(f"Error adding candidate note box: {e}")


    def ajouter_zone_note(self):
        """Adds the 'Note finale/20' label and the empty score box."""
        try:
            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
            self._configure_cell(cell, "", v_alignment=WD_ALIGN_VERTICAL.CENTER) # Ensure empty and centered
            # Optional shading for the box: self._set_cell_shading(cell, "F2F2F2") # Light Gray

            self.document.add_paragraph().paragraph_format.space_after = Pt(8 * self.spacing_factor)
        except Exception as e:
            print(f"Error adding final score zone: {e}")


    def ajouter_lignes_correcteurs(self):
        """Adds lines for corrector signatures."""
        try:
            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)
        except Exception as e:
             print(f"Error adding corrector lines: {e}")


    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(str(points).replace(',', '.')) # Ensure conversion from string, handle comma
        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"):
        """Generates the complete Word document."""
        try:
            self.calculate_dynamic_sizing()
            self.ajouter_entete_colore()
            self.creer_tableau_elements() # Includes single newline after name
            self.ajouter_note_jury()
            self.creer_tableau_recapitulatif()
            self.ajouter_lignes_correcteurs() # Before final score box usually
            self.ajouter_zone_note()
            self.ajouter_note_candidat_avec_cadre() # Keep green box near the end

            self.document.save(nom_fichier)
            print(f"Document '{nom_fichier}' generated successfully.")
            return nom_fichier
        except Exception as e:
            print(f"FATAL error generating document: {e}")
            traceback.print_exc()
            return None # Indicate failure

# --- Flask Application ---
app = Flask(__name__)
app.config['UPLOAD_FOLDER'] = UPLOAD_FOLDER
app.secret_key = os.urandom(24) # Needed for flash messages

@app.route("/eps", methods=["GET", "POST"])
def index():
    if request.method == "POST":
        docx_filepath = None # Initialize variable
        pdf_filepath = None # Initialize variable
        try:
            # --- Récupération des informations ---
            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")

            # --- 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")

            num_elements_added = 0
            for name, cat, pts in zip(element_names, element_categories, element_points):
                if name and name.strip() and cat and cat.strip() and pts and pts.strip():
                    evaluation.ajouter_element(name.strip(), cat.strip(), pts.strip())
                    num_elements_added += 1
                else:
                    # Optionally log skipped incomplete elements for debugging
                    # print(f"Skipping incomplete element: Name='{name}', Cat='{cat}', Pts='{pts}'")
                    pass # Silently skip incomplete rows

            if num_elements_added == 0:
                 flash("Aucun élément technique complet n'a été fourni. Le document sera généré sans éléments.", "warning")
                 # Allow generation even with no elements, or redirect back:
                 # return redirect(url_for('index'))

            # --- Génération du document DOCX ---
            safe_candidat_name = "".join(c if c.isalnum() else "_" for c in nom_candidat) # Sanitize name for filename
            safe_session = "".join(c if c.isalnum() else "_" for c in session_value)
            base_filename = f"evaluation_{safe_candidat_name}_{safe_session}"
            docx_filename = f"{base_filename}.docx"
            docx_filepath = os.path.join(app.config['UPLOAD_FOLDER'], docx_filename)

            generated_docx = evaluation.generer_document(docx_filepath)

            if not generated_docx: # Check if generation failed
                flash("Une erreur est survenue lors de la génération du document DOCX.", "error")
                return redirect(url_for('index'))

            # --- Conversion et envoi ---
            if output_format == "pdf":
                 print(f"Attempting PDF conversion for {docx_filepath}...")
                 try:
                    # Check API key again before conversion attempt
                    if not convertapi.api_credentials or convertapi.api_credentials = 'secret_8wCI6pgOP9AxLVJG':
                         flash("La clé API pour ConvertAPI n'est pas configurée correctement. Impossible de générer le PDF.", "error")
                         # Optionally send the docx as fallback?
                         # return send_file(docx_filepath, as_attachment=True, download_name=docx_filename)
                         return redirect(url_for('index'))

                    result = convertapi.convert('pdf', { 'File': docx_filepath }, 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 convertapi.ApiError as api_err:
                      print(f"ConvertAPI Error: {api_err}")
                      flash(f"Erreur ConvertAPI: {api_err}. Vérifiez votre clé ou vos crédits. Le fichier DOCX sera téléchargé.", "warning")
                      # Fallback to sending DOCX
                      return send_file(docx_filepath, as_attachment=True, download_name=docx_filename)
                 except Exception as e:
                      print(f"Error during PDF conversion: {e}")
                      traceback.print_exc()
                      flash(f"Erreur lors de la conversion PDF: {e}. Le fichier DOCX sera téléchargé.", "warning")
                      # Fallback to sending DOCX
                      return send_file(docx_filepath, as_attachment=True, download_name=docx_filename)

            else: # Send the generated DOCX
                return send_file(docx_filepath, as_attachment=True, download_name=docx_filename)

        except Exception as e:
            print(f"An error occurred during POST request processing: {e}")
            traceback.print_exc()
            flash(f"Une erreur interne est survenue: {e}", "error")
            return redirect(url_for('index')) # Redirect back to form on error

        finally:
             # Clean up temporary files (optional, consider delay or cron job for robustness)
             # Be careful cleaning up docx if PDF failed and you sent docx as fallback
             if output_format == "pdf" and pdf_filepath and os.path.exists(pdf_filepath):
                  # If PDF was successfully sent (or attempted), remove the source docx
                  if docx_filepath and os.path.exists(docx_filepath):
                       try: os.remove(docx_filepath)
                       except OSError as e: print(f"Error removing temp docx: {e}")
                  # Maybe remove the PDF too after sending? Or keep it for a while?
                  # try: os.remove(pdf_filepath)
                  # except OSError as e: print(f"Error removing temp pdf: {e}")
             elif output_format == "docx" and docx_filepath and os.path.exists(docx_filepath):
                  # Maybe remove the DOCX after sending? Or keep it? Let's keep it for now.
                  pass


    # --- 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):
        try:
             os.makedirs(UPLOAD_FOLDER)
        except OSError as e:
             print(f"CRITICAL: Could not create upload folder '{UPLOAD_FOLDER}'. Exiting. Error: {e}")
             exit() # Exit if we can't create the folder

    # Consider security implications of debug=True in production
    app.run(debug=True, host='0.0.0.0', port=5001) # Run on port 5001, accessible on network