"""
app.py
HIFFI Artist Intelligence - Multi-Platform Executive Dashboard
Clean dark-themed design with multi-platform evidence tiers, Spotify & Instagram telemetry,
ChartMasters record sales (CSPC/EAS), breakout velocity index, deep-dive scouting dossier,
and experimental Commercial Power Index (CPI) simulation engine with sensitivity analysis.
"""

from pathlib import Path
import pandas as pd
import plotly.express as px
import plotly.graph_objects as go
import streamlit as st

from core.cpi_engine import CommercialPowerEngine
from exporters.excel_workbook import generate_executive_sales_workbook

st.set_page_config(
    page_title="HIFFI | Multi-Platform Intelligence",
    page_icon="⚡",
    layout="wide",
    initial_sidebar_state="expanded",
)

DATA_PATH = Path("data/hiffi_multiplatform_500.csv")
FALLBACK_DATA_PATH = Path("enriched_artists.csv")

# Global CSS Styling
st.markdown(
    """
    <style>
    .block-container {
        padding-top: 1.8rem;
        padding-bottom: 2.5rem;
        padding-left: 2.5rem;
        padding-right: 2.5rem;
        max-width: 100% !important;
    }

    /* KPI Cards */
    .kpi-box {
        background: #111827;
        border: 1px solid #1f2937;
        border-radius: 12px;
        padding: 16px 20px;
        margin-bottom: 12px;
    }
    .kpi-title {
        font-size: 0.75rem;
        font-weight: 700;
        color: #9ca3af;
        text-transform: uppercase;
        letter-spacing: 0.05em;
    }
    .kpi-value {
        font-size: 1.9rem;
        font-weight: 800;
        color: #f9fafb;
        margin: 4px 0;
    }
    .kpi-subtitle {
        font-size: 0.75rem;
        color: #6b7280;
    }

    /* Telemetry Coverage Banner */
    .coverage-card {
        background: #0f172a;
        border: 1px solid #1e293b;
        border-radius: 8px;
        padding: 12px 18px;
        margin-bottom: 16px;
        display: flex;
        justify-content: space-between;
        align-items: center;
        flex-wrap: wrap;
    }

    /* Simulation Micro-Cards */
    .sim-kpi-card {
        background: #0f172a;
        border: 1px solid #334155;
        border-radius: 8px;
        padding: 10px 14px;
        margin-bottom: 10px;
    }
    .sim-kpi-title {
        font-size: 0.68rem;
        font-weight: 700;
        color: #94a3b8;
        text-transform: uppercase;
    }
    .sim-kpi-val {
        font-size: 1.25rem;
        font-weight: 800;
        margin-top: 2px;
    }

    /* Podium Cards */
    .podium-tile {
        background: #111827;
        border-radius: 12px;
        padding: 18px 20px;
        border: 1px solid #1f2937;
        height: 100%;
    }
    .podium-gold { border-top: 4px solid #f59e0b; }
    .podium-silver { border-top: 4px solid #94a3b8; }
    .podium-bronze { border-top: 4px solid #f97316; }

    /* Badges */
    .badge {
        display: inline-block;
        padding: 3px 8px;
        border-radius: 6px;
        font-size: 0.70rem;
        font-weight: 700;
        text-transform: uppercase;
    }
    .badge-tier3 { background: rgba(16, 185, 129, 0.2); color: #10b981; }
    .badge-tier2 { background: rgba(56, 189, 248, 0.2); color: #38bdf8; }
    .badge-tier1 { background: rgba(245, 158, 11, 0.2); color: #f59e0b; }
    .badge-dormant { background: rgba(239, 68, 68, 0.2); color: #ef4444; }

    .custom-divider {
        height: 1px;
        background: #1f2937;
        margin: 24px 0;
    }
    </style>
    """,
    unsafe_allow_html=True,
)


@st.cache_data(ttl=60)
def load_data():
    target = DATA_PATH if DATA_PATH.exists() else FALLBACK_DATA_PATH
    if not target.exists():
        return pd.DataFrame()

    df = pd.read_csv(target)

    if "hiffi_xp_published_rank" not in df.columns:
        df["hiffi_xp_published_rank"] = df.get("hiffi_xp_rank", df.get("hiffi_rank", df.index + 1))
    if "hiffi_xp_score" not in df.columns:
        df["hiffi_xp_score"] = df.get("production_hiffi_score", df.get("hiffi_score", 0.0))
    if "platform_evidence_tier" not in df.columns:
        has_yt = df.get("production_hiffi_score", df.get("hiffi_score")).notna().astype(int)
        has_sp = df.get("spotify_monthly_listeners", pd.Series(index=df.index)).notna().astype(int)
        has_ig = df.get("instagram_followers", pd.Series(index=df.index)).notna().astype(int)
        df["platform_evidence_tier"] = has_yt + has_sp + has_ig

    numeric_cols = [
        "hiffi_xp_published_rank",
        "hiffi_xp_rank",
        "hiffi_xp_score",
        "production_hiffi_rank",
        "production_hiffi_score",
        "platform_evidence_tier",
        "breakout_velocity_index",
        "subscriber_count",
        "daily_view_velocity",
        "momentum_30d",
        "spotify_monthly_listeners",
        "spotify_daily_change",
        "instagram_followers",
        "confidence_score",
        "breakout_rank",
        "chartmasters_sales_rank",
        "cohort_sales_rank",
        "pure_album_sales",
        "physical_singles_sales",
        "digital_singles_sales",
        "streaming_eas",
        "total_eas_cspc",
        "riaa_certified_album_units",
        "riaa_certified_singles_units",
    ]
    for col in numeric_cols:
        if col in df.columns:
            df[col] = pd.to_numeric(df[col], errors="coerce")

    # Commercial Power Engine
    engine = CommercialPowerEngine()
    df["commercial_power_index"] = engine.calculate_cpi(df)

    if "subgenre" not in df.columns:
        def infer_subgenre(r):
            subs = r.get("subscriber_count", 0) or 0
            bvi = r.get("breakout_velocity_index", 0) or 0
            if bvi >= 70:
                return "Breakout / Emerging"
            elif subs >= 15000000:
                return "Legends"
            else:
                return "Trap & Street"
        df["subgenre"] = df.apply(infer_subgenre, axis=1)

    return df


df = load_data()
engine = CommercialPowerEngine()


def get_provenance_badge(status: str) -> str:
    """Format status values into readable provenance labels."""
    s = str(status).strip()
    if s == "VERIFIED_CSPC":
        return "✅ VERIFIED (CSPC)"
    elif s == "VERIFIED_RIAA":
        return "🏅 VERIFIED (RIAA)"
    elif s == "ESTIMATED_SEA":
        return "📊 ESTIMATED (SEA)"
    return "⏳ PENDING_INGESTION"


# ----------------- Sidebar Controls -----------------
with st.sidebar:
    st.markdown("### ⚡ HIFFI Multi-Platform")
    st.caption("YouTube • Spotify • Instagram • Sales Telemetry")
    st.markdown("<div class='custom-divider'></div>", unsafe_allow_html=True)

    if df.empty:
        st.error("No dataset found. Run pipeline to generate master data.")
        st.stop()

    view_mode = st.radio(
        "Leaderboard Perspective:",
        [
            "🏆 Published Multi-Platform Rank",
            "🚀 Breakout Velocity (BVI)",
            "💿 Record Sales (CSPC Methodology)",
            "🧪 Commercial Simulation Engine (CPI)",
            "🔍 Full Cohort Audit Grid",
        ],
        index=0,
    )

    st.markdown("<div class='custom-divider'></div>", unsafe_allow_html=True)

    catalog_filter = "All Monitored Artists (500)"
    if view_mode in ("💿 Record Sales (CSPC Methodology)", "🧪 Commercial Simulation Engine (CPI)"):
        st.markdown("##### 🔍 Sales Catalog Scope")
        catalog_filter = st.radio(
            "Filter Rows by Sales Telemetry:",
            ["All Monitored Artists (500)", "Verified Only (321)", "Pure CSPC Only (62)"],
            index=0,
            help="Toggle between viewing the full cohort, verified certifications, or only ChartMasters studies.",
        )
        st.markdown("<div class='custom-divider'></div>", unsafe_allow_html=True)

    sim_weight = 0.15
    sim_mode = "matched_only"
    if view_mode == "🧪 Commercial Simulation Engine (CPI)":
        st.markdown("##### 🧪 Simulation Parameters")
        sim_mode_choice = st.radio(
            "Evaluation Scope:",
            ["🎯 Matched Cohort Only", "🌐 Global Cohort (N=500, Weight Redistribution)"],
            index=1 if catalog_filter == "All Monitored Artists (500)" else 0,
            help="Matched Cohort evaluates cataloged artists in an isolated leaderboard. Global Cohort keeps all artists with normalized weights.",
        )
        sim_mode = "matched_only" if "Matched" in sim_mode_choice else "global_redistribution"

        sim_weight = st.select_slider(
            "Commercial Signal Weight:",
            options=[0.0, 0.05, 0.10, 0.15, 0.20],
            value=0.15,
            format_func=lambda x: f"{int(x*100)}% Commercial",
            help="Blends Commercial Power Index (CPI) with baseline production score.",
        )
        st.caption(f"Baseline Score Weight: **{int((1.0 - sim_weight)*100)}%**")
        st.markdown("<div class='custom-divider'></div>", unsafe_allow_html=True)

    st.markdown("##### 🛡️ Cohort Filters")
    all_verticals = sorted(df["subgenre"].dropna().unique().tolist())
    selected_verticals = st.multiselect("Vertical", options=all_verticals, default=all_verticals)

    tier_options = sorted(df["platform_evidence_tier"].dropna().unique().astype(int).tolist(), reverse=True)
    selected_tiers = st.multiselect("Evidence Tier", options=tier_options, default=tier_options)

    min_xp = st.slider("Min HIFFI-XP Score", 0.0, 100.0, 0.0, 5.0)

# Filter logic
filtered_df = df[
    (df["subgenre"].isin(selected_verticals))
    & (df["platform_evidence_tier"].isin(selected_tiers))
    & (df["hiffi_xp_score"].fillna(0.0) >= min_xp)
].copy()

if catalog_filter == "Pure CSPC Only (62)":
    filtered_df = filtered_df[filtered_df["sales_data_status"] == "VERIFIED_CSPC"].copy()
elif catalog_filter == "Verified Only (321)":
    filtered_df = filtered_df[filtered_df["sales_data_status"].isin(["VERIFIED_CSPC", "VERIFIED_RIAA"])].copy()

# Execute simulation calculations if chosen
sim_metrics = {}
if view_mode == "🧪 Commercial Simulation Engine (CPI)":
    filtered_df = engine.simulate_ranking(filtered_df, commercial_weight=sim_weight, mode=sim_mode)
    sim_metrics = engine.compute_simulation_metrics(filtered_df)

with st.sidebar:
    st.markdown("<div class='custom-divider'></div>", unsafe_allow_html=True)
    st.markdown("##### 💾 Unified Audit Exports")

    excel_workbook_bytes = generate_executive_sales_workbook(filtered_df, commercial_weight=sim_weight, mode=sim_mode)
    st.download_button(
        "📊 Multi-Tab Audit Excel (.xlsx)",
        data=excel_workbook_bytes,
        file_name="hiffi_executive_sales_audit.xlsx",
        mime="application/vnd.openxmlformats-officedocument.spreadsheetml.sheet",
        width="stretch",
    )

    csv_payload = filtered_df.to_csv(index=False).encode("utf-8")
    st.download_button(
        "📥 Filtered Table CSV",
        data=csv_payload,
        file_name="hiffi_multiplatform_filtered.csv",
        mime="text/csv",
        width="stretch",
    )

    st.markdown("<div class='custom-divider'></div>", unsafe_allow_html=True)
    st.caption("Governance: CSPC Methodology • EAS Units • Zero-Imputation Compliant")

# ----------------- Main Header -----------------
head_col1, head_col2 = st.columns([3, 1])
with head_col1:
    st.markdown("<h2 style='margin-bottom: 2px;'>HIFFI Multi-Platform Intelligence Hub</h2>", unsafe_allow_html=True)
    st.markdown("<p style='color: #9ca3af; font-size: 0.92rem; margin-top: 0;'>Multi-platform composite rankings with zero-imputation policy, dynamic weight redistribution, and verified record sales.</p>", unsafe_allow_html=True)
with head_col2:
    st.markdown(
        f"<div style='text-align: right; color: #6b7280; font-size: 0.8rem; padding-top: 10px;'>Filtered Cohort: <b>{len(filtered_df)} / {len(df)}</b> artists</div>",
        unsafe_allow_html=True,
    )

# ----------------- Macro KPI Cards -----------------
k1, k2, k3, k4, k5 = st.columns(5)
with k1:
    st.markdown(f'<div class="kpi-box"><div class="kpi-title">Tracked Artists</div><div class="kpi-value">{len(df)}</div><div class="kpi-subtitle">Monitored Cohort</div></div>', unsafe_allow_html=True)
with k2:
    t3_count = len(df[df["platform_evidence_tier"] == 3])
    st.markdown(f'<div class="kpi-box"><div class="kpi-title" style="color: #10b981;">Tier 3 (Complete)</div><div class="kpi-value" style="color: #10b981;">{t3_count}</div><div class="kpi-subtitle">YouTube + Spotify + Instagram</div></div>', unsafe_allow_html=True)
with k3:
    sp_count = df["spotify_monthly_listeners"].notna().sum()
    st.markdown(f'<div class="kpi-box"><div class="kpi-title" style="color: #38bdf8;">Spotify Telemetry</div><div class="kpi-value" style="color: #38bdf8;">{sp_count}</div><div class="kpi-subtitle">Verified monthly listeners</div></div>', unsafe_allow_html=True)
with k4:
    ig_count = df["instagram_followers"].notna().sum()
    st.markdown(f'<div class="kpi-box"><div class="kpi-title" style="color: #f59e0b;">Instagram Audience</div><div class="kpi-value" style="color: #f59e0b;">{ig_count}</div><div class="kpi-subtitle">Verified public followings</div></div>', unsafe_allow_html=True)
with k5:
    cataloged_count = df["total_eas_cspc"].fillna(0).gt(0).sum()
    st.markdown(f'<div class="kpi-box"><div class="kpi-title" style="color: #ec4899;">Catalog Coverage</div><div class="kpi-value" style="color: #ec4899;">{cataloged_count}</div><div class="kpi-subtitle">100% Cohort Cataloged</div></div>', unsafe_allow_html=True)

st.markdown("<div class='custom-divider'></div>", unsafe_allow_html=True)

# ----------------- Dynamic Telemetry Coverage Banner -----------------
if view_mode in ("💿 Record Sales (CSPC Methodology)", "🧪 Commercial Simulation Engine (CPI)"):
    verified_cspc_cnt = int((df["sales_data_status"] == "VERIFIED_CSPC").sum())
    verified_riaa_cnt = int((df["sales_data_status"] == "VERIFIED_RIAA").sum())
    estimated_sea_cnt = int((df["sales_data_status"] == "ESTIMATED_SEA").sum())
    total_active_coverage = verified_cspc_cnt + verified_riaa_cnt + estimated_sea_cnt
    coverage_pct = (total_active_coverage / len(df)) * 100.0

    st.markdown(
        f"""
        <div class="coverage-card">
            <div>
                <span style="font-weight: 800; color: #f9fafb; font-size: 0.92rem;">📡 Commercial Telemetry Coverage Progress:</span>
                <span style="color: #10b981; font-weight: 700; margin-left: 8px;">{verified_cspc_cnt} CSPC Verified</span>
                <span style="color: #64748b; margin: 0 6px;">•</span>
                <span style="color: #38bdf8; font-weight: 700;">{verified_riaa_cnt} RIAA Certified</span>
                <span style="color: #64748b; margin: 0 6px;">•</span>
                <span style="color: #a855f7; font-weight: 600;">{estimated_sea_cnt} Streaming SEA</span>
            </div>
            <div style="font-size: 0.85rem; color: #94a3b8;">
                Active Commercial Coverage: <strong style="color: #10b981;">{coverage_pct:.1f}%</strong> ({total_active_coverage}/{len(df)})
            </div>
        </div>
        """,
        unsafe_allow_html=True,
    )

# ----------------- Standalone Module Views -----------------

if view_mode == "💿 Record Sales (CSPC Methodology)":
    st.markdown("### 💿 Global Record Sales & Lifetime Commercial Ranking")
    st.caption("Standardized on ChartMasters CSPC, verified RIAA certifications, and video/audio streaming equivalent units.")

    sc1, sc2, sc3, sc4 = st.columns(4)
    total_sales_volume = filtered_df["total_eas_cspc"].fillna(0).sum()
    cspc_count = (filtered_df["sales_data_status"] == "VERIFIED_CSPC").sum()
    riaa_count = (filtered_df["sales_data_status"] == "VERIFIED_RIAA").sum()
    sea_count = (filtered_df["sales_data_status"] == "ESTIMATED_SEA").sum()

    with sc1:
        st.markdown(f'<div class="kpi-box"><div class="kpi-title">Tracked Catalog Volume</div><div class="kpi-value">{total_sales_volume/1e6:.1f}M</div><div class="kpi-subtitle">Total Equivalent Album Sales (EAS)</div></div>', unsafe_allow_html=True)
    with sc2:
        st.markdown(f'<div class="kpi-box"><div class="kpi-title" style="color: #10b981;">CSPC Verified</div><div class="kpi-value" style="color: #10b981;">{cspc_count}</div><div class="kpi-subtitle">ChartMasters Full Dossiers</div></div>', unsafe_allow_html=True)
    with sc3:
        st.markdown(f'<div class="kpi-box"><div class="kpi-title" style="color: #38bdf8;">RIAA Certified</div><div class="kpi-value" style="color: #38bdf8;">{riaa_count}</div><div class="kpi-subtitle">Domestic Certifications</div></div>', unsafe_allow_html=True)
    with sc4:
        st.markdown(f'<div class="kpi-box"><div class="kpi-title" style="color: #a855f7;">Streaming SEA</div><div class="kpi-value" style="color: #a855f7;">{sea_count}</div><div class="kpi-subtitle">Luminate/Billboard Conversion</div></div>', unsafe_allow_html=True)

    st.markdown("#### 🏆 All-Time Global Sales Leaderboard")
    sales_table_df = filtered_df.sort_values(by="total_eas_cspc", ascending=False).copy()
    sales_table_df["provenance_badge"] = sales_table_df["sales_data_status"].apply(get_provenance_badge)

    sales_cols = [
        "cohort_sales_rank",
        "chartmasters_sales_rank",
        "name",
        "provenance_badge",
        "total_eas_cspc",
        "pure_album_sales",
        "streaming_eas",
        "physical_singles_sales",
        "digital_singles_sales",
        "commercial_power_index",
        "hiffi_xp_published_rank",
    ]
    render_s_cols = [c for c in sales_cols if c in sales_table_df.columns]

    st.dataframe(
        sales_table_df[render_s_cols].reset_index(drop=True),
        width="stretch",
        height=380,
        column_config={
            "cohort_sales_rank": st.column_config.NumberColumn("Cohort Sales Rank", format="#%d", width="small"),
            "chartmasters_sales_rank": st.column_config.NumberColumn("All-Time Global Rank", format="#%d", width="small"),
            "name": st.column_config.TextColumn("Artist", width="medium"),
            "provenance_badge": st.column_config.TextColumn("Audit Provenance", width="medium"),
            "total_eas_cspc": st.column_config.NumberColumn("Total EAS Units", format="%,d", width="medium"),
            "pure_album_sales": st.column_config.NumberColumn("Pure Studio Albums", format="%,d", width="medium"),
            "streaming_eas": st.column_config.NumberColumn("Streaming EAS", format="%,d", width="medium"),
            "physical_singles_sales": st.column_config.NumberColumn("Physical Singles", format="%,d", width="small"),
            "digital_singles_sales": st.column_config.NumberColumn("Digital Downloads", format="%,d", width="small"),
            "commercial_power_index": st.column_config.ProgressColumn("CPI Score", min_value=0, max_value=100, format="%.1f", width="small"),
            "hiffi_xp_published_rank": st.column_config.NumberColumn("HIFFI Base Rank", format="#%d", width="small"),
        },
    )

    st.markdown("<div class='custom-divider'></div>", unsafe_allow_html=True)

    c_s1, c_s2 = st.columns(2)
    with c_s1:
        top_sellers = sales_table_df[sales_table_df["total_eas_cspc"] > 0].head(12)
        fig_format = go.Figure()
        fig_format.add_trace(go.Bar(name="Traditional Albums", x=top_sellers["name"], y=top_sellers["pure_album_sales"], marker_color="#8b5cf6"))
        fig_format.add_trace(go.Bar(name="Digital Singles", x=top_sellers["name"], y=top_sellers["digital_singles_sales"], marker_color="#38bdf8"))
        fig_format.add_trace(go.Bar(name="Streaming EAS", x=top_sellers["name"], y=top_sellers["streaming_eas"], marker_color="#10b981"))
        fig_format.update_layout(
            barmode="stack",
            title="Format Contribution: Pure Albums vs Downloads vs Streaming EAS",
            template="plotly_dark",
            paper_bgcolor="#111827",
            plot_bgcolor="#111827",
            font=dict(color="#9ca3af"),
            height=360,
            margin=dict(l=20, r=20, t=50, b=20),
            legend=dict(orientation="h", yanchor="bottom", y=1.02, xanchor="right", x=1.0),
        )
        st.plotly_chart(fig_format, width="stretch")

    with c_s2:
        scatter_data = sales_table_df.dropna(subset=["total_eas_cspc", "hiffi_xp_score"]).copy()
        fig_quad = px.scatter(
            scatter_data,
            x="hiffi_xp_score",
            y="total_eas_cspc",
            size="total_eas_cspc",
            color="provenance_badge",
            hover_name="name",
            log_y=True,
            title="Legacy vs. Velocity Quadrant (All-Time Sales vs HIFFI-XP)",
            labels={"hiffi_xp_score": "Current Multi-Platform Velocity (HIFFI-XP)", "total_eas_cspc": "Total Lifetime EAS Units (Log Scale)"},
            template="plotly_dark",
        )
        fig_quad.update_layout(
            paper_bgcolor="#111827",
            plot_bgcolor="#111827",
            font=dict(color="#9ca3af"),
            height=360,
            margin=dict(l=20, r=20, t=50, b=20),
        )
        st.plotly_chart(fig_quad, width="stretch")

else:
    top3 = filtered_df.sort_values(by="hiffi_xp_published_rank", ascending=True).head(3)
    if len(top3) >= 3 and view_mode != "🧪 Commercial Simulation Engine (CPI)":
        st.markdown("#### 👑 Market Leaders (Published Baseline Rankings)")
        p1, p2, p3 = st.columns(3)
        podium_data = [
            (p1, top3.iloc[0], "🥇 PUBLISHED #1", "podium-gold", "#f59e0b"),
            (p2, top3.iloc[1], "🥈 PUBLISHED #2", "podium-silver", "#94a3b8"),
            (p3, top3.iloc[2], "🥉 PUBLISHED #3", "podium-bronze", "#f97316"),
        ]
        for col, row_data, rank_label, css_class, accent_color in podium_data:
            tier_val = int(row_data.get("platform_evidence_tier", 1))
            sp_str = f"{int(row_data['spotify_monthly_listeners']):,}" if pd.notna(row_data.get("spotify_monthly_listeners")) else "NaN"
            ig_str = f"{int(row_data['instagram_followers']):,}" if pd.notna(row_data.get("instagram_followers")) else "NaN"
            with col:
                st.markdown(
                    f"""
                    <div class="podium-tile {css_class}">
                        <div style="display: flex; justify-content: space-between; align-items: center; margin-bottom: 6px;">
                            <span style="font-weight: 800; color: {accent_color}; font-size: 0.85rem;">{rank_label}</span>
                            <span class="badge badge-tier{tier_val}">Tier {tier_val} Evidence</span>
                        </div>
                        <div style="font-size: 1.35rem; font-weight: 800; color: #ffffff; margin-bottom: 2px;">{row_data['name']}</div>
                        <div style="font-size: 0.8rem; color: #6b7280; margin-bottom: 12px;">{row_data.get('channel_title', '')}</div>
                        <div style="display: flex; justify-content: space-between; background: #0b0f17; padding: 10px 14px; border-radius: 8px;">
                            <div><div style="font-size: 0.68rem; color: #9ca3af;">HIFFI-XP</div><div style="font-size: 1.25rem; font-weight: 800; color: {accent_color};">{row_data['hiffi_xp_score']:.2f}</div></div>
                            <div><div style="font-size: 0.68rem; color: #9ca3af;">Spotify Monthly</div><div style="font-size: 1.05rem; font-weight: 700; color: #38bdf8;">{sp_str}</div></div>
                            <div><div style="font-size: 0.68rem; color: #9ca3af;">IG Followers</div><div style="font-size: 1.05rem; font-weight: 700; color: #e5e7eb;">{ig_str}</div></div>
                        </div>
                    </div>
                    """,
                    unsafe_allow_html=True,
                )
        st.markdown("<div class='custom-divider'></div>", unsafe_allow_html=True)

    if view_mode == "🧪 Commercial Simulation Engine (CPI)":
        st.markdown("#### 🧪 Simulation Impact & Decision Summary")
        sm1, sm2, sm3, sm4 = st.columns(4)

        g_delta = f"+{sim_metrics.get('top_gainer_delta', 0)}" if sim_metrics.get('top_gainer_delta', 0) > 0 else f"{sim_metrics.get('top_gainer_delta', 0)}"
        l_delta = f"{sim_metrics.get('top_loser_delta', 0)}"

        with sm1:
            st.markdown(f'<div class="sim-kpi-card"><div class="sim-kpi-title">Top Gainer</div><div class="sim-kpi-val" style="color: #10b981;">{sim_metrics.get("top_gainer_name", "None")} <span style="font-size: 0.85rem;">(▲ {g_delta})</span></div></div>', unsafe_allow_html=True)
        with sm2:
            st.markdown(f'<div class="sim-kpi-card"><div class="sim-kpi-title">Top Loser</div><div class="sim-kpi-val" style="color: #ef4444;">{sim_metrics.get("top_loser_name", "None")} <span style="font-size: 0.85rem;">(▼ {l_delta})</span></div></div>', unsafe_allow_html=True)
        with sm3:
            st.markdown(f'<div class="sim-kpi-card"><div class="sim-kpi-title">Mean Absolute Shift</div><div class="sim-kpi-val" style="color: #38bdf8;">± {sim_metrics.get("mean_abs_delta", 0.0)} <span style="font-size: 0.85rem; color: #94a3b8;">positions</span></div></div>', unsafe_allow_html=True)
        with sm4:
            st.markdown(f'<div class="sim-kpi-card"><div class="sim-kpi-title">Simulation Scope</div><div class="sim-kpi-val" style="color: #f59e0b;">{sim_metrics.get("matched_coverage", 0)} / {len(filtered_df)} <span style="font-size: 0.85rem; color: #94a3b8;">({sim_mode})</span></div></div>', unsafe_allow_html=True)

        st.caption(f"💡 **Executive Takeaway:** At **{int(sim_weight*100)}% commercial weight**, the average cataloged artist moves **±{sim_metrics.get('mean_abs_delta', 0.0)} positions**.")
        st.markdown("<div class='custom-divider'></div>", unsafe_allow_html=True)

    st.markdown(f"#### 📋 {view_mode}")

    if view_mode == "🏆 Published Multi-Platform Rank":
        table_df = filtered_df.sort_values(by="hiffi_xp_published_rank", ascending=True).copy()
        cols = ["hiffi_xp_published_rank", "hiffi_xp_rank", "name", "platform_evidence_tier", "hiffi_xp_score", "spotify_monthly_listeners", "instagram_followers", "effective_weights", "anomaly_flags"]
    elif view_mode == "🚀 Breakout Velocity (BVI)":
        table_df = filtered_df[filtered_df["breakout_velocity_index"].notna()].sort_values(by="breakout_velocity_index", ascending=False).copy()
        cols = ["name", "breakout_velocity_index", "hiffi_xp_published_rank", "daily_view_velocity", "momentum_30d", "subscriber_count", "subgenre"]
    elif view_mode == "🧪 Commercial Simulation Engine (CPI)":
        table_df = filtered_df.sort_values(by="simulated_rank", ascending=True).copy()

        def format_rank_delta(val):
            if pd.isna(val):
                return "N/A"
            ival = int(val)
            if ival > 0:
                return f"▲ +{ival} (Up)"
            elif ival < 0:
                return f"▼ {ival} (Down)"
            else:
                return "— 0 (Equal)"

        table_df["rank_shift_indicator"] = table_df["simulation_rank_delta"].apply(format_rank_delta)
        comp_rank = "baseline_matched_rank" if sim_mode == "matched_only" else "hiffi_xp_published_rank"

        cols = [
            "simulated_rank",
            comp_rank,
            "rank_shift_indicator",
            "name",
            "simulated_hiffi_score",
            "hiffi_xp_score",
            "commercial_power_index",
            "total_eas_cspc",
            "sales_data_status",
        ]
    else:
        table_df = filtered_df.sort_values(by="hiffi_xp_published_rank", ascending=True).copy()
        cols = ["hiffi_xp_published_rank", "name", "production_hiffi_rank", "hiffi_xp_rank", "rank_delta", "platform_evidence_tier", "hiffi_xp_score", "spotify_monthly_listeners", "instagram_followers", "total_eas_cspc", "sales_data_status", "evidence_exclusions", "anomaly_flags"]

    display_table = table_df.copy()
    if "sales_data_status" in display_table.columns:
        display_table["sales_data_status"] = display_table["sales_data_status"].apply(get_provenance_badge)

    render_cols = [c for c in cols if c in display_table.columns]

    st.dataframe(
        display_table[render_cols].reset_index(drop=True),
        width="stretch",
        height=340,
        column_config={
            "hiffi_xp_published_rank": st.column_config.NumberColumn("Published Rank", format="%d", width="small"),
            "baseline_matched_rank": st.column_config.NumberColumn("Baseline Match Rank", format="%d", width="small"),
            "simulated_rank": st.column_config.NumberColumn("Simulated Rank", format="%d", width="small"),
            "rank_shift_indicator": st.column_config.TextColumn("Simulated Δ (Movement)", width="medium"),
            "simulated_hiffi_score": st.column_config.ProgressColumn("Simulated Score", format="%.2f", min_value=0, max_value=100, width="medium"),
            "hiffi_xp_score": st.column_config.ProgressColumn("HIFFI-XP Score", format="%.2f", min_value=0, max_value=100, width="medium"),
            "commercial_power_index": st.column_config.ProgressColumn("Commercial Power Index", format="%.1f", min_value=0, max_value=100, width="medium"),
            "total_eas_cspc": st.column_config.NumberColumn("Total Equivalent Album Sales", format="%,d", width="medium"),
            "pure_album_sales": st.column_config.NumberColumn("Traditional Album Sales", format="%,d", width="medium"),
            "streaming_eas": st.column_config.NumberColumn("Streaming-Equivalent Album Sales", format="%,d", width="medium"),
            "sales_data_status": st.column_config.TextColumn("Sales Audit Status", width="medium"),
        },
    )

    st.markdown("<div class='custom-divider'></div>", unsafe_allow_html=True)

    if view_mode == "🧪 Commercial Simulation Engine (CPI)":
        c_sim1, c_sim2 = st.columns(2)
        with c_sim1:
            sim_delta_df = filtered_df.dropna(subset=["simulation_rank_delta"]).sort_values(by="total_eas_cspc", ascending=False).head(15).copy()
            if not sim_delta_df.empty:
                fig_delta = px.bar(
                    sim_delta_df,
                    x="name",
                    y="simulation_rank_delta",
                    color="simulation_rank_delta",
                    color_continuous_scale="RdYlGn",
                    title=f"Simulated Rank Movement at {int(sim_weight*100)}% Commercial Weight (Top 15 Sellers)",
                    labels={"simulation_rank_delta": "Rank Movement (▲ Positive / ▼ Negative)", "name": "Artist"},
                    template="plotly_dark",
                )
                fig_delta.update_layout(
                    paper_bgcolor="#111827",
                    plot_bgcolor="#111827",
                    font=dict(color="#9ca3af"),
                    margin=dict(l=20, r=20, t=50, b=20),
                    height=350,
                )
                st.plotly_chart(fig_delta, width="stretch")

        with c_sim2:
            sensitivity_df = engine.run_sensitivity_matrix(filtered_df, mode=sim_mode).head(15)
            fig_sens = go.Figure()
            for idx, r in sensitivity_df.head(6).iterrows():
                fig_sens.add_trace(go.Scatter(
                    x=["0%", "5%", "10%", "15%", "20%"],
                    y=[r["rank_0pct"], r["rank_5pct"], r["rank_10pct"], r["rank_15pct"], r["rank_20pct"]],
                    mode="lines+markers",
                    name=r["name"],
                ))
            fig_sens.update_layout(
                title="Weight Sensitivity: Rank Trajectories Across Weights (Top Volatile Acts)",
                yaxis=dict(autorange="reversed", title="Simulated Rank (Lower is Better)"),
                xaxis=dict(title="Commercial Signal Weight (%)"),
                template="plotly_dark",
                paper_bgcolor="#111827",
                plot_bgcolor="#111827",
                font=dict(color="#9ca3af"),
                margin=dict(l=20, r=20, t=50, b=20),
                height=350,
            )
            st.plotly_chart(fig_sens, width="stretch")
    else:
        c_left, c_right = st.columns(2)
        with c_left:
            chart_df = filtered_df.dropna(subset=["spotify_monthly_listeners", "instagram_followers", "hiffi_xp_score"]).copy()
            if not chart_df.empty:
                fig_scatter = px.scatter(
                    chart_df,
                    x="spotify_monthly_listeners",
                    y="instagram_followers",
                    size="hiffi_xp_score",
                    color="platform_evidence_tier",
                    hover_name="name",
                    log_x=True,
                    log_y=True,
                    title="Spotify Monthly Listeners vs. Instagram Followers",
                    labels={"spotify_monthly_listeners": "Spotify Monthly Listeners (Log Scale)", "instagram_followers": "Instagram Followers (Log Scale)", "platform_evidence_tier": "Tier"},
                    template="plotly_dark",
                )
                fig_scatter.update_layout(
                    paper_bgcolor="#111827",
                    plot_bgcolor="#111827",
                    font=dict(color="#9ca3af"),
                    margin=dict(l=20, r=20, t=40, b=20),
                    height=320,
                )
                st.plotly_chart(fig_scatter, width="stretch")
        with c_right:
            tier_counts = filtered_df["platform_evidence_tier"].value_counts().reset_index()
            tier_counts.columns = ["Tier", "Count"]
            fig_pie = px.pie(tier_counts, values="Count", names="Tier", title="Evidence Tier Cohort Distribution", template="plotly_dark", color="Tier", color_discrete_map={3: "#10b981", 2: "#38bdf8", 1: "#f59e0b", 0: "#ef4444"})
            fig_pie.update_layout(
                paper_bgcolor="#111827",
                plot_bgcolor="#111827",
                font=dict(color="#9ca3af"),
                margin=dict(l=20, r=20, t=40, b=20),
                height=320,
            )
            st.plotly_chart(fig_pie, width="stretch")

# ----------------- Deep Dive Scouting Dossier -----------------
st.markdown("<div class='custom-divider'></div>", unsafe_allow_html=True)
st.markdown("#### 🔎 Artist Dossier")

selected_name = st.selectbox("Inspect Artist Details:", df["name"].unique(), label_visibility="collapsed")
row = df[df["name"] == selected_name].iloc[0]

d1, d2, d3, d4, d5 = st.columns(5)
with d1:
    h_val = row.get("hiffi_xp_score")
    st.metric("HIFFI-XP Score", f"{h_val:.2f}" if pd.notna(h_val) else "N/A")
with d2:
    pub_rank = row.get("hiffi_xp_published_rank")
    st.metric("Published Rank", f"#{int(pub_rank)}" if pd.notna(pub_rank) else "Unranked")
with d3:
    sp_l = row.get("spotify_monthly_listeners")
    st.metric("Spotify Listeners", f"{int(sp_l):,}" if pd.notna(sp_l) else "Unindexed (NaN)")
with d4:
    ig_f = row.get("instagram_followers")
    st.metric("Instagram Followers", f"{int(ig_f):,}" if pd.notna(ig_f) else "Unindexed (NaN)")
with d5:
    sales_val = row.get("total_eas_cspc")
    st.metric("Total EAS Sales", f"{int(sales_val):,}" if pd.notna(sales_val) else "Awaiting Ingestion")

st.markdown(
    f"""
    <div style="background: #111827; padding: 14px 18px; border-radius: 8px; border: 1px solid #1f2937; margin-top: 10px; font-size: 0.85rem;">
        <div style="display: flex; gap: 20px; flex-wrap: wrap;">
            <div><b>Artist:</b> {row['name']}</div>
            <div><b>Evidence Tier:</b> Tier {int(row.get('platform_evidence_tier', 1))}</div>
            <div><b>Global Sales Rank:</b> {f"#{int(row.get('chartmasters_sales_rank'))}" if pd.notna(row.get('chartmasters_sales_rank')) else "Unranked"}</div>
            <div><b>Cohort Sales Rank:</b> {f"#{int(row.get('cohort_sales_rank'))}" if pd.notna(row.get('cohort_sales_rank')) else "Uncataloged"}</div>
            <div><b>Commercial Power Index:</b> {f"{row.get('commercial_power_index'):.1f}" if pd.notna(row.get('commercial_power_index')) else "Awaiting Audit"}</div>
            <div><b>Traditional Albums:</b> {f"{int(row.get('pure_album_sales')):,}" if pd.notna(row.get('pure_album_sales')) else "N/A"}</div>
            <div><b>Streaming-Equivalent EAS:</b> {f"{int(row.get('streaming_eas')):,}" if pd.notna(row.get('streaming_eas')) else "N/A"}</div>
            <div><b>Sales Status:</b> {get_provenance_badge(row.get('sales_data_status', ''))}</div>
            <div><b>Effective Weights:</b> {row.get('effective_weights', 'N/A')}</div>
            <div><b>Anomaly Flags:</b> {row.get('anomaly_flags', 'CLEAN')}</div>
        </div>
    </div>
    """,
    unsafe_allow_html=True,
)