Add admin-only dataset management panel via ?admin query param

src/streamlit_app.py

@@ -69,6 +69,18 @@ st.markdown("""
     font-size: 0.78rem; margin-top: 4px;
 }
 
+/* ── Admin banner ─────────────────────────────────────────────────────────── */
+.admin-banner {
+    background: linear-gradient(135deg, #212529 0%, #343a40 100%);
+    border-radius: 10px;
+    padding: 16px 20px;
+    color: white;
+    margin-bottom: 20px;
+    border-left: 4px solid #ffc107;
+}
+.admin-banner h3 { margin: 0 0 4px 0; font-size: 1rem; color: #ffc107; }
+.admin-banner p  { margin: 0; font-size: 0.82rem; color: rgba(255,255,255,0.75); }
+
 /* ── Sidebar ──────────────────────────────────────────────────────────────── */
 [data-testid="stSidebar"] { background: #f8f9fa; }
 [data-testid="stSidebar"] .stButton > button {
@@ -83,6 +95,15 @@ st.markdown("""
 """, unsafe_allow_html=True)
 
 
+# ── Admin mode detection ───────────────────────────────────────────────────────
+is_admin = "admin" in st.query_params
+
+# ── Session state init ─────────────────────────────────────────────────────────
+if "custom_df" not in st.session_state:
+    st.session_state.custom_df = None
+    st.session_state.custom_source = None
+
+
 def _section(icon, title, subtitle=""):
     sub_html = f'<div class="sub">{subtitle}</div>' if subtitle else ""
     st.markdown(
@@ -373,47 +394,60 @@ with st.sidebar:
         unsafe_allow_html=True,
     )
 
-    # ── Dataset upload ─────────────────────────────────────────────────────────
-    df = None
-    data_source = "bad_actor_simulation.xlsx (default)"
+    # ── Dataset management (admin only) ───────────────────────────────────────
+    if is_admin:
+        with st.expander("🗂️ Dataset", expanded=True):
+            # Status aktif saat ini
+            if st.session_state.custom_df is not None:
+                st.success(
+                    f"**Custom dataset aktif**\n\n"
+                    f"{st.session_state.custom_source}\n\n"
+                    f"{len(st.session_state.custom_df):,} rows"
+                )
+                if st.button("🗑️ Hapus & kembali ke default", use_container_width=True):
+                    st.session_state.custom_df = None
+                    st.session_state.custom_source = None
+                    st.rerun()
+            else:
+                st.info("Menggunakan **default** dataset\n\n`bad_actor_simulation.xlsx`")
+
+            st.markdown("---")
+            st.caption("Upload file untuk mengganti dataset aktif:")
+            uploaded = st.file_uploader(
+                "CSV atau XLSX",
+                type=["csv", "xlsx"],
+                label_visibility="collapsed",
+            )
 
-    with st.expander("Dataset", expanded=False):
-        uploaded = st.file_uploader(
-            "Upload CSV or XLSX  (leave empty to use default file)",
-            type=["csv", "xlsx"],
-        )
+            if uploaded is not None:
+                raw = uploaded.read()
+                ext = uploaded.name.rsplit(".", 1)[-1].lower()
 
-        if uploaded is not None:
-            raw = uploaded.read()
-            ext = uploaded.name.rsplit(".", 1)[-1].lower()
+                if ext == "csv":
+                    candidate_df = load_csv(raw)
+                    candidate_source = uploaded.name
+                else:
+                    sheets = get_xlsx_sheets(raw)
+                    sheet = sheets[0] if len(sheets) == 1 else st.selectbox("Pilih sheet", sheets)
+                    candidate_df = load_xlsx(raw, sheet)
+                    candidate_source = f"{uploaded.name}  [sheet: {sheet}]"
 
-            if ext == "csv":
-                df = load_csv(raw)
-                data_source = uploaded.name
-                missing = REQUIRED_COLS - set(df.columns)
+                missing = REQUIRED_COLS - set(candidate_df.columns)
                 if missing:
-                    st.error(f"CSV missing columns: {', '.join(sorted(missing))}")
-                    df = None
-
-            elif ext == "xlsx":
-                sheets = get_xlsx_sheets(raw)
-                if len(sheets) == 1:
-                    sheet = sheets[0]
+                    st.error(f"Kolom tidak ditemukan: {', '.join(sorted(missing))}")
                 else:
-                    sheet = st.selectbox("Sheet name", sheets)
-                df = load_xlsx(raw, sheet)
-                data_source = f"{uploaded.name}  [sheet: {sheet}]"
-                missing = REQUIRED_COLS - set(df.columns)
-                if missing:
-                    st.error(f"XLSX missing columns: {', '.join(sorted(missing))}")
-                    df = None
+                    st.caption(f"Preview — {len(candidate_df):,} rows, {len(candidate_df.columns)} cols")
+                    st.dataframe(candidate_df.head(3), use_container_width=True)
+                    if st.button("✅ Terapkan dataset ini", use_container_width=True):
+                        st.session_state.custom_df = candidate_df
+                        st.session_state.custom_source = candidate_source
+                        st.rerun()
 
-        if df is None:
-            df = load_default()
+        st.divider()
 
-        st.caption(f"Loaded: {data_source}  |  {len(df):,} rows")
-
-    st.divider()
+    # ── Determine active dataframe ─────────────────────────────────────────────
+    df = st.session_state.custom_df if st.session_state.custom_df is not None else load_default()
+    data_source = st.session_state.custom_source or "bad_actor_simulation.xlsx (default)"
 
     # ── Filters ────────────────────────────────────────────────────────────────
     with st.expander("🎛️  Filters", expanded=True):
@@ -450,6 +484,19 @@ with st.sidebar:
     st.caption("Adjust filters above, then click Run.")
 
 # ── Main area ──────────────────────────────────────────────────────────────────
+
+# Admin banner (hanya muncul di mode admin)
+if is_admin:
+    st.markdown(
+        '<div class="admin-banner">'
+        '<h3>⚙️ Admin Mode</h3>'
+        '<p>Dataset management aktif. Gunakan panel <strong>Dataset</strong> di sidebar '
+        'untuk upload, replace, atau hapus dataset. '
+        'File default (<code>bad_actor_simulation.xlsx</code>) tidak akan pernah diubah.</p>'
+        '</div>',
+        unsafe_allow_html=True,
+    )
+
 hcol1, hcol2 = st.columns([3, 1])
 with hcol1:
     st.markdown(
@@ -483,9 +530,8 @@ else:
       <h2>Welcome to the Simulation Console</h2>
       <p>Identify equipment that consistently underperforms relative to its peers.</p>
       <ul class="step-list">
-        <li><span class="step-num">1</span> Open <strong>Dataset</strong> in the sidebar to upload a CSV or XLSX file, or use the default.</li>
-        <li><span class="step-num">2</span> Expand <strong>Filters</strong> to set year, site, section, model, and observation month.</li>
-        <li><span class="step-num">3</span> Click <strong>Run Simulation</strong> to compute scores and flag bad actors.</li>
+        <li><span class="step-num">1</span> Expand <strong>Filters</strong> to set year, site, section, model, and observation month.</li>
+        <li><span class="step-num">2</span> Click <strong>Run Simulation</strong> to compute scores and flag bad actors.</li>
       </ul>
     </div>
     """, unsafe_allow_html=True)