Update app.py

app.py

@@ -0,0 +1,181 @@
+import streamlit as st
+import json
+import pandas as pd
+import os
+
+st.set_page_config(page_title="Dataset Builder", layout="wide")
+st.title("📚 JSONL Dataset Editor")
+
+TMP_DIR = "temp"
+TMP_FILE = os.path.join(TMP_DIR, "session_dataset.jsonl")
+
+# --- Helper: ensure tmp dir exists ---
+os.makedirs(TMP_DIR, exist_ok=True)
+
+
+# --- Helper: get all unique fields from records ---
+def get_all_fields(data):
+    all_keys = set()
+    for record in data:
+        all_keys.update(record.keys())
+    return sorted(all_keys)
+
+
+# --- Load session data from temp file if exists ---
+if "data" not in st.session_state:
+    if os.path.exists(TMP_FILE):
+        with open(TMP_FILE, "r", encoding="utf-8") as f:
+            st.session_state.data = [json.loads(line) for line in f]
+        st.session_state.all_fields = get_all_fields(st.session_state.data)
+    else:
+        st.session_state.data = []
+        st.session_state.all_fields = []
+
+# --- Upload JSONL File ---
+uploaded_file = st.file_uploader("Upload a JSONL file", type=["jsonl"])
+
+if uploaded_file:
+    content = uploaded_file.read().decode("utf-8")
+    st.session_state.data = [json.loads(line) for line in content.strip().splitlines()]
+    st.session_state.all_fields = get_all_fields(st.session_state.data)
+
+    # Save to temp
+    with open(TMP_FILE, "w", encoding="utf-8") as f:
+        for item in st.session_state.data:
+            f.write(json.dumps(item, ensure_ascii=False) + "\n")
+
+    st.success(
+        f"Loaded {len(st.session_state.data)} records with fields: {st.session_state.all_fields}"
+    )
+
+# If still no data, use safe fallback fields
+if not st.session_state.data and not st.session_state.all_fields:
+    st.session_state.all_fields = ["context", "question", "answer"]
+
+# --- Edit Existing Records ---
+st.markdown("### ✏️ Edit Records")
+
+df = pd.DataFrame(st.session_state.data)
+df = df.reindex(columns=st.session_state.all_fields)
+
+# Fix: Convert likely text fields to string to avoid StreamlitAPIException
+for field in st.session_state.all_fields:
+    if field.lower() in ["context", "answer", "question"]:
+        df[field] = df[field].astype(str)
+
+# Auto-set long fields like "context", "answer" as textareas
+column_configs = {
+    field: (
+        st.column_config.TextColumn(label=field, width="large")
+        if field.lower() in ["context", "answer", "question"]
+        else None
+    )
+    for field in st.session_state.all_fields
+}
+
+# --- Use st.data_editor for editable table ---
+edited_df = st.data_editor(
+    df,
+    use_container_width=True,
+    num_rows="dynamic",
+    column_config=column_configs,
+)
+
+# --- Save updated data ---
+if edited_df is not None:
+    st.session_state.data = edited_df.fillna("").to_dict(orient="records")
+
+    # Save to temp file
+    with open(TMP_FILE, "w", encoding="utf-8") as f:
+        for item in st.session_state.data:
+            f.write(json.dumps(item, ensure_ascii=False) + "\n")
+
+    st.toast("✅ Changes auto-saved!", icon="💾")
+
+# --- Add New Entry ---
+st.markdown("### ➕ Add New Entry")
+
+# Show form with current fields
+with st.form("new_entry_form"):
+    new_record = {}
+    for field in st.session_state.all_fields:
+        new_record[field] = st.text_area(f"{field}", key=f"input_{field}")
+
+    submitted = st.form_submit_button("Add Entry")
+    if submitted:
+        st.session_state.data.append(new_record)
+
+        # Save to temp
+        with open(TMP_FILE, "w", encoding="utf-8") as f:
+            for item in st.session_state.data:
+                f.write(json.dumps(item, ensure_ascii=False) + "\n")
+
+        st.success("✅ New entry added!")
+        st.rerun()
+
+# Option to add a new field
+with st.expander("➕ Add New Field"):
+    new_field = st.text_input("New field name", key="new_field_name")
+    if st.button("Add Field"):
+        if new_field and new_field not in st.session_state.all_fields:
+            st.session_state.all_fields.append(new_field)
+            st.success(f"✅ Field '{new_field}' added!")
+            st.rerun()
+
+
+# --- Export JSONL ---
+st.markdown("### 📤 Export Dataset")
+
+# Let user define a custom export path
+export_path = st.text_input(
+    "Custom save path (e.g., ./exports/my_dataset.jsonl)",
+    value="./exports/exported_dataset.jsonl",
+)
+
+col1, col2 = st.columns(2)
+
+# --- Export Button ---
+with col1:
+    if st.button("📁 Export JSONL"):
+        if not os.path.exists(os.path.dirname(export_path)):
+            os.makedirs(os.path.dirname(export_path))
+
+        # Write to custom path
+        with open(export_path, "w", encoding="utf-8") as f_out:
+            for row in st.session_state.data:
+                f_out.write(json.dumps(row, ensure_ascii=False) + "\n")
+
+        st.success(f"✅ Dataset saved to {export_path}")
+
+        # Load content for download
+        with open(export_path, "r", encoding="utf-8") as f_download:
+            exported_content = f_download.read()
+
+        st.download_button(
+            "⬇️ Download JSONL",
+            exported_content,
+            file_name=os.path.basename(export_path),
+            mime="application/json",
+        )
+
+        # Reset session and temp
+        if os.path.exists(TMP_FILE):
+            os.remove(TMP_FILE)
+        st.session_state.clear()
+        st.success("🧹 Temporary session cleared. You're starting fresh!")
+        st.rerun()
+
+# --- Download Temp Only Button ---
+with col2:
+    if os.path.exists(TMP_FILE):
+        with open(TMP_FILE, "r", encoding="utf-8") as f_tmp:
+            tmp_content = f_tmp.read()
+
+        st.download_button(
+            "⬇️ Download Temp File",
+            tmp_content,
+            file_name="session_dataset.jsonl",
+            mime="application/json",
+        )
+    else:
+        st.warning("⚠️ No temp file found to download.")