Create app.py

app.py

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+#!/usr/bin/env python
+"""
+nexa-prompts – Gradio Space to craft JSON instruction / template bundles
+for scientific‑ML prompt engineering.
+
+Author: Allan (Nexa Ecosystem) – Apache‑2.0
+"""
+
+import json, re, tempfile, gradio as gr
+
+# ───────────────────────── helper functions ──────────────────────────
+def clean_author_block(tex: str) -> str:
+    """Remove any \author{ … } block (including embedded newlines)."""
+    return re.sub(r"\\author\{.*?\}", "", tex, flags=re.DOTALL)
+
+def swap_topic(text: str, old: str, new: str) -> str:
+    pat = re.compile(re.escape(old), flags=re.IGNORECASE)
+    return pat.sub(new, text)
+
+def build_json(system_instr: str,
+               user_template: str,
+               topic_swap: str,
+               strip_author: bool) -> str:
+    if strip_author:
+        user_template = clean_author_block(user_template)
+
+    if topic_swap.strip():
+        user_template = swap_topic(user_template, "black holes", topic_swap)
+        system_instr  = swap_topic(system_instr,  "black holes", topic_swap)
+
+    payload = [
+        {"role": "system", "content": system_instr.strip()},
+        {"role": "user",   "content": user_template.strip()}
+    ]
+    return json.dumps(payload, indent=2)
+
+def to_tmp_file(text: str) -> str:
+    """Persist text to a temp .json file so Gradio can serve it."""
+    f = tempfile.NamedTemporaryFile(delete=False, suffix=".json", mode="w")
+    f.write(text); f.close()
+    return f.name
+
+# ────────────────────────── Gradio UI ────────────────────────────────
+with gr.Blocks(title="Nexa Prompts") as demo:
+    gr.Markdown(
+        """
+        # Nexa Prompts  
+        Quickly build **role‑based JSON conversations** for SciML agents.  
+        1. Edit the **System** and **User** boxes  
+        2. (Optional) swap topic or strip the `\\author{}` block  
+        3. Click **Generate** → copy or download your JSON  
+        """
+    )
+
+    with gr.Row():
+        sys_box  = gr.Textbox(lines=10, label="System Instruction")
+        usr_box  = gr.Textbox(lines=20, label="User Template (LaTeX, etc.)")
+
+    with gr.Row():
+        topic_box   = gr.Textbox(label="Swap topic (optional)", placeholder="e.g. quantum computing")
+        strip_chk   = gr.Checkbox(label="Strip \\author{...} block", value=True)
+
+    gen_btn  = gr.Button("Generate JSON")
+    json_box = gr.Textbox(lines=20, label="Generated JSON", interactive=False)
+    dl_btn   = gr.DownloadButton(label="⬇️ Download .json")
+
+    def run(system_instr, user_template, topic_swap, strip_author):
+        js = build_json(system_instr, user_template, topic_swap, strip_author)
+        path = to_tmp_file(js)
+        return js, path
+
+    gen_btn.click(
+        run,
+        inputs=[sys_box, usr_box, topic_box, strip_chk],
+        outputs=[json_box, dl_btn],
+    )
+
+if __name__ == "__main__":
+    demo.launch()