Create app.py

app.py

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+import os
+import io
+import re
+import streamlit as st
+
+# Must be the very first Streamlit command.
+st.set_page_config(layout="wide", initial_sidebar_state="collapsed")
+
+from PIL import Image
+import fitz  # PyMuPDF
+
+from reportlab.lib.pagesizes import A4
+from reportlab.platypus import SimpleDocTemplate, Paragraph, Spacer, Table, TableStyle
+from reportlab.lib.styles import getSampleStyleSheet, ParagraphStyle
+from reportlab.lib import colors
+from reportlab.pdfbase import pdfmetrics
+from reportlab.pdfbase.ttfonts import TTFont
+
+# ---------------------------------------------------------------
+# Define available NotoEmoji fonts (assumed in the base directory)
+available_fonts = {
+    "NotoEmoji Variable": "NotoEmoji-VariableFont_wght.ttf",
+    "NotoEmoji Bold": "NotoEmoji-Bold.ttf",
+    "NotoEmoji Light": "NotoEmoji-Light.ttf",
+    "NotoEmoji Medium": "NotoEmoji-Medium.ttf",
+    "NotoEmoji Regular": "NotoEmoji-Regular.ttf",
+    "NotoEmoji SemiBold": "NotoEmoji-SemiBold.ttf"
+}
+
+# Sidebar: Let the user choose the NotoEmoji font.
+selected_font_name = st.sidebar.selectbox(
+    "Select NotoEmoji Font",
+    options=list(available_fonts.keys())
+)
+selected_font_path = available_fonts[selected_font_name]
+
+# Register the chosen emoji font with ReportLab.
+pdfmetrics.registerFont(TTFont(selected_font_name, selected_font_path))
+
+# ---------------------------------------------------------------
+# Helper function to wrap emoji characters with a font tag.
+def apply_emoji_font(text, emoji_font):
+    emoji_pattern = re.compile(
+        r"([\U0001F300-\U0001F5FF"
+        r"\U0001F600-\U0001F64F"
+        r"\U0001F680-\U0001F6FF"
+        r"\U0001F700-\U0001F77F"
+        r"\U0001F780-\U0001F7FF"
+        r"\U0001F800-\U0001F8FF"
+        r"\U0001F900-\U0001F9FF"
+        r"\U0001FA00-\U0001FA6F"
+        r"\U0001FA70-\U0001FAFF"
+        r"\u2600-\u26FF"
+        r"\u2700-\u27BF]+)"
+    )
+    return emoji_pattern.sub(r'<font face="{}">\1</font>'.format(emoji_font), text)
+
+# ---------------------------------------------------------------
+# Default markdown content with your Deities Guide.
+default_markdown = """# 🌟 Deities Guide: Mythology and Moral Lessons 🌟
+
+## 1. 📜 Introduction
+1. Purpose: Explore deities, spirits, saints, and beings with their stories and morals.  
+2. Usage: Guide for learning and storytelling across traditions.  
+3. Themes: Justice, faith, hubris, redemption, cosmic order.
+
+## 2. 🛠️ Core Concepts of Divinity
+1. Powers: Creation, omniscience, shapeshifting across entities.  
+2. Life Cycle: Mortality, immortality, transitions (e.g., saints, avatars).  
+3. Communication: Omens, visions, miracles from gods and spirits.
+
+### 2.1. ⚡ Standard Abilities
+1. Creation: Gods and spirits shape worlds (e.g., Allah, Vishnu).  
+2. Influence: Saints, prophets intercede (e.g., Muhammad, Paul).  
+3. Transformation: Angels, avatars shift forms (e.g., Gabriel, Krishna).  
+4. Knowledge: Foresight or revelation (e.g., Holy Spirit, Brahma).  
+5. Judgment: Divine authority (e.g., Yahweh, Yama).
+
+### 2.2. ⏳ Mortality and Immortality
+1. Gods: Eternal (e.g., Allah, Shiva).  
+2. Spirits: Realm-bound (e.g., jinn, devas).  
+3. Saints/Prophets: Mortal to divine (e.g., Moses, Rama).  
+4. Beings: Limbo states (e.g., cherubim, rakshasas).  
+5. Lessons: Faith, duty define transitions.
+
+### 2.3. 🌠 Ascension and Signs
+1. Paths: Birth, deeds, revelation (e.g., Jesus, Arjuna).  
+2. Signs: Miracles, prophecies (e.g., Quran, Gita).  
+3. Morals: Obedience, devotion shape destiny.
+
+## 3. 🎲 Storytelling and Games
+1. Portrayal: Gods, spirits, saints in narratives or RPGs.  
+2. Dynamics: Clerics, imams, sadhus serve higher powers.  
+3. Balance: Power vs. personality for depth.
+
+### 3.1. 🎮 Dungeon Mastering Beings
+1. Gods: Epic scope (e.g., Allah, Vishnu).  
+2. Spirits: Local influence (e.g., jinn, apsaras).  
+3. Saints: Moral anchors (e.g., St. Francis, Ali).
+
+### 3.2. 🙏 Devotee Relationships
+1. Clerics: Serve gods (e.g., Krishna’s priests).  
+2. Mediums: Channel spirits (e.g., jinn whisperers).  
+3. Faithful: Venerate saints/prophets (e.g., Fatima’s followers).
+
+## 4. 🌐 Traditions and Legends
+*(Top three figures—gods, spirits, saints, beings—with relationships and morals)*  
+1. **American Indian** 🦅  
+   1. Coyote, Raven, White Buffalo Woman: Trickster kin and wise mother.  
+   2. Relation: Siblings and guide teach balance.  
+   3. Lesson: Chaos breeds wisdom.  
+2. **Arthurian** ⚔️  
+   1. Merlin, Morgan le Fay, Arthur: Mentor, rival, son.  
+   2. Relation: Family tests loyalty.  
+   3. Lesson: Honor vs. betrayal.  
+3. **Babylonian** 🏛️  
+   1. Marduk, Tiamat, Ishtar: Son, mother, lover.  
+   2. Relation: Kinship drives order.  
+   3. Lesson: Power reshapes chaos.  
+4. **Christian: Trinity** ✝️  
+   1. God (Yahweh), Jesus, Holy Spirit: Father, Son, Spirit.  
+   2. Relation: Divine family redeems.  
+   3. Lesson: Faith restores grace.  
+5. **Christian: Saints & Angels** 😇  
+   1. St. Michael, Gabriel, Mary: Warrior, messenger, mother.  
+   2. Relation: Heavenly kin serve God.  
+   3. Lesson: Duty upholds divine will.  
+6. **Celtic** 🍀  
+   1. Lugh, Morrigan, Cernunnos: Son, mother, father.  
+   2. Relation: Family governs cycles.  
+   3. Lesson: Courage in fate.  
+7. **Central American** 🌄  
+   1. Quetzalcoatl, Tezcatlipoca, Huitzilopochtli: Brothers and war son.  
+   2. Relation: Sibling rivalry creates.  
+   3. Lesson: Sacrifice builds worlds.  
+8. **Chinese** 🐉  
+   1. Jade Emperor, Nuwa, Sun Wukong: Father, mother, rebel son.  
+   2. Relation: Family enforces harmony.  
+   3. Lesson: Duty curbs chaos.  
+9. **Cthulhu** 🐙  
+   1. Cthulhu, Nyarlathotep, Yog-Sothoth: Elder kin.  
+   2. Relation: Cosmic trio overwhelms.  
+   3. Lesson: Insignificance humbles.  
+10. **Egyptian** ☥  
+    1. Ra, Osiris, Isis: Father, son, mother.  
+    2. Relation: Family ensures renewal.  
+    3. Lesson: Justice prevails.  
+11. **Finnish** ❄️  
+    1. Väinämöinen, Louhi, Ukko: Son, mother, father.  
+    2. Relation: Kinship tests wisdom.  
+    3. Lesson: Perseverance wins.  
+12. **Greek** 🏛️  
+    1. Zeus, Hera, Athena: Father, mother, daughter.  
+    2. Relation: Family rules with tension.  
+    3. Lesson: Hubris meets wisdom.  
+13. **Hindu: Trimurti** 🕉️  
+    1. Brahma, Vishnu, Shiva: Creator, preserver, destroyer.  
+    2. Relation: Divine trio cycles existence.  
+    3. Lesson: Balance sustains life.  
+14. **Hindu: Avatars & Devis** 🌺  
+    1. Krishna, Rama, Durga: Sons and fierce mother.  
+    2. Relation: Avatars and goddess protect dharma.  
+    Gabri    3. Lesson: Duty defeats evil.  
+15. **Japanese** 🌸  
+    1. Amaterasu, Susanoo, Tsukuyomi: Sister, brothers.  
+    2. Relation: Siblings balance cosmos.  
+    3. Lesson: Harmony vs. chaos.  
+16. **Melnibonean** 🗡️  
+    1. Arioch, Xiombarg, Elric: Lords and mortal son.  
+    2. Relation: Pact binds chaos.  
+    3. Lesson: Power corrupts.  
+17. **Muslim: Divine & Messengers** ☪️  
+    1. Allah, Muhammad, Gabriel: God, prophet, angel.  
+    2. Relation: Messenger reveals divine will.  
+    3. Lesson: Submission brings peace.  
+18. **Muslim: Spirits & Kin** 👻  
+    1. Jinn, Iblis, Khidr: Spirits and guide defy or aid.  
+    2. Relation: Supernatural kin test faith.  
+    3. Lesson: Obedience vs. rebellion.  
+19. **Nehwon** 🏰  
+    1. Death, Ningauble, Sheelba: Fateful trio.  
+    2. Relation: Guides shape destiny.  
+    3. Lesson: Cunning defies fate.  
+20. **Nonhumans’** 🧝  
+    1. Corellon, Moradin, Gruumsh: Elf, dwarf, orc fathers.  
+    2. Relation: Rivals define purpose.  
+    3. Lesson: Community endures.  
+21. **Norse** ᚱ  
+    1. Odin, Frigg, Loki: Father, mother, trickster son.  
+    2. Relation: Family faces doom.  
+    3. Lesson: Sacrifice costs.  
+22. **Sumerian** 🗿  
+    1. Enki, Inanna, Anu: Son, daughter, father.  
+    2. Relation: Kin wield knowledge.  
+    3. Lesson: Ambition shapes.
+
+## 5. 📚 Appendices
+1. Planes: Realms of gods, spirits, saints (e.g., Paradise, Svarga).  
+2. Symbols: Rituals and artifacts of faith.  
+3. Charts: Domains and duties for devotees.
+
+### 5.1. 🌌 Planes of Existence
+1. Heaven/Paradise: Christian/Muslim abode.  
+2. Svarga: Hindu divine realm.  
+3. Underworld: Spirits linger (e.g., Sheol, Naraka).
+
+### 5.2. 🕍 Temple Trappings
+1. Cross/Crescent: Christian/Muslim faith.  
+2. Mandalas: Hindu devotion.  
+3. Relics: Saints’ and prophets’ legacy.
+
+### 5.3. 📊 Clerical Chart
+1. Gods: Domains (e.g., creation, mercy).  
+2. Spirits: Influence (e.g., guidance, mischief).  
+3. Saints/Prophets: Virtues (e.g., justice, prophecy).
+"""
+
+# ---------------------------------------------------------------
+# Process markdown into a two-page layout for the PDF.
+def markdown_to_pdf_content(markdown_text):
+    lines = markdown_text.strip().split('\n')
+    pdf_content = []
+    in_list_item = False
+    current_item = None
+    sub_items = []
+    
+    for line in lines:
+        line = line.strip()
+        if not line:
+            continue
+            
+        if line.startswith('# '):
+            # Skip the main title for now, added separately.
+            pass
+        elif line.startswith('## '):
+            if current_item and sub_items:
+                pdf_content.append([current_item, sub_items])
+                sub_items = []
+                current_item = None
+            section = line.replace('## ', '').strip()
+            pdf_content.append(f"<b>{section}</b>")
+            in_list_item = False
+        elif re.match(r'^\d+\.', line):
+            if current_item and sub_items:
+                pdf_content.append([current_item, sub_items])
+                sub_items = []
+            current_item = line.strip()
+            in_list_item = True
+        elif line.startswith('- ') and in_list_item:
+            sub_items.append(line.strip())
+        elif re.match(r'^\d+\.\d+\.', line):
+            if current_item and sub_items:
+                pdf_content.append([current_item, sub_items])
+                sub_items = []
+            current_item = line.strip()
+            in_list_item = True
+        else:
+            if not in_list_item:
+                pdf_content.append(line.strip())
+    
+    if current_item and sub_items:
+        pdf_content.append([current_item, sub_items])
+    
+    # Split into two pages (roughly balanced).
+    total_items = sum(1 + len(subs) if isinstance(item, list) else 1 for item in pdf_content)
+    target_per_page = total_items // 2
+    page1_content = []
+    page2_content = []
+    current_count = 0
+    
+    for item in pdf_content:
+        item_count = 1 + (len(item[1]) if isinstance(item, list) else 0)
+        if current_count < target_per_page or len(page1_content) == 0:
+            page1_content.append(item)
+            current_count += item_count
+        else:
+            page2_content.append(item)
+    
+    return page1_content, page2_content
+
+# ---------------------------------------------------------------
+# Create the PDF with two pages.
+def create_main_pdf(markdown_text, base_font_size=10, auto_size=False):
+    buffer = io.BytesIO()
+    doc = SimpleDocTemplate(
+        buffer, 
+        pagesize=A4,
+        leftMargin=36,
+        rightMargin=36,
+        topMargin=36,
+        bottomMargin=36
+    )
+    
+    styles = getSampleStyleSheet()
+    story = []
+    spacer_height = 10
+    page1_content, page2_content = markdown_to_pdf_content(markdown_text)
+    
+    total_items = sum(1 + len(subs) if isinstance(item, list) else 1 for item in page1_content + page2_content)
+    if auto_size:
+        base_font_size = max(6, min(12, 400 / total_items))  # Adjusted for two pages.
+    
+    item_font_size = base_font_size
+    subitem_font_size = base_font_size * 0.9
+    section_font_size = base_font_size * 1.2
+    title_font_size = min(16, base_font_size * 1.5)
+    
+    # Define ParagraphStyles using Helvetica for normal text.
+    title_style = ParagraphStyle(
+        'Heading1',
+        parent=styles['Heading1'],
+        fontName="Helvetica-Bold",
+        textColor=colors.darkblue,
+        alignment=1,
+        fontSize=title_font_size
+    )
+    
+    section_style = ParagraphStyle(
+        'SectionStyle',
+        parent=styles['Heading2'],
+        fontName="Helvetica-Bold",
+        textColor=colors.darkblue,
+        fontSize=section_font_size,
+        leading=section_font_size * 1.2,
+        spaceAfter=2
+    )
+    
+    item_style = ParagraphStyle(
+        'ItemStyle',
+        parent=styles['Normal'],
+        fontName="Helvetica",
+        fontSize=item_font_size,
+        leading=item_font_size * 1.2,
+        spaceAfter=1
+    )
+    
+    subitem_style = ParagraphStyle(
+        'SubItemStyle',
+        parent=styles['Normal'],
+        fontName="Helvetica",
+        fontSize=subitem_font_size,
+        leading=subitem_font_size * 1.2,
+        leftIndent=10,
+        spaceAfter=1
+    )
+    
+    # Page 1
+    story.append(Paragraph(apply_emoji_font("Deities Guide: Mythology and Moral Lessons", selected_font_name), title_style))
+    story.append(Spacer(1, spacer_height))
+    
+    for item in page1_content:
+        if isinstance(item, str) and item.startswith('<b>'):
+            text = item.replace('<b>', '').replace('</b>', '')
+            story.append(Paragraph(apply_emoji_font(text, selected_font_name), section_style))
+        elif isinstance(item, list):
+            main_item, sub_items = item
+            story.append(Paragraph(apply_emoji_font(main_item, selected_font_name), item_style))
+            for sub_item in sub_items:
+                story.append(Paragraph(apply_emoji_font(sub_item, selected_font_name), subitem_style))
+        else:
+            story.append(Paragraph(apply_emoji_font(item, selected_font_name), item_style))
+    
+    story.append(Spacer(1, A4[1] - sum(p.minHeight() for p in story) - 72))  # Fill page.
+    
+    # Page 2
+    story.append(Paragraph(apply_emoji_font("Deities Guide: Continued", selected_font_name), title_style))
+    story.append(Spacer(1, spacer_height))
+    
+    for item in page2_content:
+        if isinstance(item, str) and item.startswith('<b>'):
+            text = item.replace('<b>', '').replace('</b>', '')
+            story.append(Paragraph(apply_emoji_font(text, selected_font_name), section_style))
+        elif isinstance(item, list):
+            main_item, sub_items = item
+            story.append(Paragraph(apply_emoji_font(main_item, selected_font_name), item_style))
+            for sub_item in sub_items:
+                story.append(Paragraph(apply_emoji_font(sub_item, selected_font_name), subitem_style))
+        else:
+            story.append(Paragraph(apply_emoji_font(item, selected_font_name), item_style))
+    
+    doc.build(story)
+    buffer.seek(0)
+    return buffer.getvalue()
+
+# ---------------------------------------------------------------
+# Convert PDF bytes to an image for preview using PyMuPDF.
+def pdf_to_image(pdf_bytes):
+    try:
+        doc = fitz.open(stream=pdf_bytes, filetype="pdf")
+        images = []
+        for page in doc:
+            pix = page.get_pixmap(matrix=fitz.Matrix(2.0, 2.0))
+            img = Image.frombytes("RGB", [pix.width, pix.height], pix.samples)
+            images.append(img)
+        doc.close()
+        return images
+    except Exception as e:
+        st.error(f"Failed to render PDF preview: {e}")
+        return None
+
+# ---------------------------------------------------------------
+# Sidebar options for text size.
+with st.sidebar:
+    auto_size = st.checkbox("Auto-size text", value=True)
+    if not auto_size:
+        base_font_size = st.slider("Base Font Size (points)", min_value=6, max_value=16, value=10, step=1)
+    else:
+        base_font_size = 10
+        st.info("Font size will auto-adjust between 6-12 points based on content length.")
+
+# Persist markdown content in session state.
+if 'markdown_content' not in st.session_state:
+    st.session_state.markdown_content = default_markdown
+
+# ---------------------------------------------------------------
+# Generate the PDF.
+with st.spinner("Generating PDF..."):
+    pdf_bytes = create_main_pdf(st.session_state.markdown_content, base_font_size, auto_size)
+
+# Display PDF preview.
+with st.container():
+    pdf_images = pdf_to_image(pdf_bytes)
+    if pdf_images:
+        for i, img in enumerate(pdf_images):
+            st.image(img, caption=f"Page {i+1}", use_container_width=True)
+    else:
+        st.info("Download the PDF to view it locally.")
+
+# PDF Download button.
+st.download_button(
+    label="Download PDF",
+    data=pdf_bytes,
+    file_name="deities_guide.pdf",
+    mime="application/pdf"
+)
+
+# Markdown editor.
+edited_markdown = st.text_area(
+    "Modify the markdown content below:",
+    value=st.session_state.markdown_content,
+    height=300
+)
+
+# Update PDF on button click.
+if st.button("Update PDF"):
+    st.session_state.markdown_content = edited_markdown
+    st.experimental_rerun()
+
+# Markdown Download button.
+st.download_button(
+    label="Save Markdown",
+    data=st.session_state.markdown_content,
+    file_name="deities_guide.md",
+    mime="text/markdown"
+)