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app.py

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+import os
+import tempfile
+import traceback
+import gradio as gr
+
+from slide_generator import generate_presentation
+from pptx_builder import build_pptx
+
+STYLES = ["Professional", "Creative", "Academic", "Startup"]
+
+CSS = """
+* { box-sizing: border-box; }
+body, .gradio-container {
+    background: #f0f7f4 !important;
+    font-family: 'Inter', system-ui, sans-serif !important;
+}
+footer { display: none !important; }
+.header-block {
+    background: linear-gradient(135deg, #1b6ca8 0%, #19a88a 100%);
+    border-radius: 16px;
+    padding: 32px 36px 28px;
+    margin-bottom: 24px;
+}
+button.primary {
+    background: linear-gradient(135deg, #1b6ca8, #19a88a) !important;
+    color: #fff !important;
+    border: none !important;
+    border-radius: 12px !important;
+    font-size: 17px !important;
+    font-weight: 700 !important;
+    padding: 16px 0 !important;
+    width: 100% !important;
+    cursor: pointer !important;
+    box-shadow: 0 4px 16px rgba(25,168,138,0.3) !important;
+}
+button.primary:hover { opacity: .87 !important; }
+textarea, input[type="text"] {
+    background: #f5fbf9 !important;
+    border: 1.5px solid #b2ddd1 !important;
+    border-radius: 10px !important;
+    color: #1a3a3a !important;
+    font-size: 14px !important;
+}
+input[type="range"] { accent-color: #19a88a !important; }
+.status-ok {
+    background: #e6f7f2; border: 1px solid #a8dfd0;
+    border-radius: 10px; padding: 12px 18px;
+    font-size: 14px; color: #1a5a4a; margin-bottom: 8px;
+}
+.status-wait {
+    background: #f0f7ff; border: 1px solid #b2cfe8;
+    border-radius: 10px; padding: 12px 18px;
+    font-size: 14px; color: #1a3a6a; margin-bottom: 8px;
+}
+"""
+
+
+def format_preview(data: dict) -> str:
+    lines = [f"# {data.get('title', '')}", ""]
+    if data.get("subtitle"):
+        lines += [f"*{data['subtitle']}*", ""]
+    lines.append("---")
+    for slide in data.get("slides", []):
+        num = slide.get("slide_number", "")
+        title = slide.get("title", "")
+        if slide.get("type") == "title":
+            lines.append(f"\n### 🎯 Slide {num} — {title}")
+            if slide.get("subtitle"):
+                lines.append(f"> {slide['subtitle']}")
+        else:
+            lines.append(f"\n### 📄 Slide {num} — {title}")
+            for b in slide.get("bullets", []):
+                lines.append(f"- {b}")
+        if slide.get("speaker_notes"):
+            lines.append(f"\n*🗒 {slide['speaker_notes']}*")
+    return "\n".join(lines)
+
+
+def generate_and_download(topic, audience, style, num_slides, key_points,
+                          progress=gr.Progress()):
+    if not topic.strip():
+        raise gr.Error("Please enter a topic.")
+    if not audience.strip():
+        raise gr.Error("Please enter the target audience.")
+    try:
+        progress(0.1, desc="AI is writing your slides…")
+        data = generate_presentation(
+            topic=topic.strip(), style=style,
+            num_slides=int(num_slides),
+            audience=audience.strip(),
+            key_points=key_points.strip(),
+        )
+        progress(0.75, desc="Building PPTX…")
+        pptx_bytes = build_pptx(data, style)
+
+        tmp_dir = tempfile.mkdtemp()
+        safe = topic[:30].replace(" ", "_").replace("/", "-")
+        out_path = os.path.join(tmp_dir, f"{safe}.pptx")
+        with open(out_path, "wb") as f:
+            f.write(pptx_bytes)
+
+        progress(1.0, desc="Done!")
+        n = len(data.get("slides", []))
+        status = f"<div class='status-ok'>✅ <strong>{n} slides</strong> ready — download below!</div>"
+        return format_preview(data), out_path, status
+
+    except gr.Error:
+        raise
+    except Exception:
+        raise gr.Error(traceback.format_exc())
+
+
+with gr.Blocks(title="SlideAI", css=CSS) as demo:
+
+    gr.HTML("""
+    <div class="header-block">
+      <h1 style="margin:0;font-size:28px;font-weight:800;color:#fff;">SlideAI</h1>
+      <p style="margin:6px 0 0;font-size:14px;color:rgba(255,255,255,.88);">
+        Turn any topic into a polished, download-ready presentation — in seconds.
+      </p>
+    </div>""")
+
+    with gr.Row():
+        with gr.Column(scale=1, min_width=300):
+            topic = gr.Textbox(label="Topic *",
+                               placeholder="e.g. Climate Change, AI in Medicine…", lines=2)
+            audience = gr.Textbox(label="Target Audience *",
+                                  placeholder="e.g. Investors, Students…", lines=1)
+            with gr.Row():
+                style = gr.Dropdown(choices=STYLES, value="Professional",
+                                    label="Style", scale=1)
+                num_slides = gr.Slider(minimum=5, maximum=15, step=1, value=8,
+                                       label="Slides", scale=1)
+            key_points = gr.Textbox(label="Key Points (optional)",
+                                    placeholder="Specific facts or ideas to include…", lines=2)
+            btn = gr.Button("✨ Generate Presentation", variant="primary", size="lg")
+
+        with gr.Column(scale=2, min_width=380):
+            status = gr.HTML(
+                "<div class='status-wait'>Fill in the form on the left and hit <strong>Generate</strong>.</div>"
+            )
+            preview = gr.Markdown()
+            download = gr.File(label="📥 Download your PPTX", interactive=False)
+
+    btn.click(
+        fn=generate_and_download,
+        inputs=[topic, audience, style, num_slides, key_points],
+        outputs=[preview, download, status],
+    )
+
+if __name__ == "__main__":
+    demo.launch()