LevinAleksey/Blockchain_Contract_Analytics

1import streamlit as st2import pandas as pd3import plotly.express as px4import matplotlib5matplotlib.use('Agg')6import matplotlib.pyplot as plt7import json8import os9 10st.set_page_config(page_title="Crypto Dash", layout="wide")11 12 13def load_data() -> dict:14    app_dir = os.path.dirname(os.path.abspath(__file__))15    data_path = os.path.join(app_dir, "data.json")16    with open(data_path, "r", encoding="utf-8") as f:17        payload = json.load(f)18    return payload[0] if isinstance(payload, list) else payload19 20 21def build_cohorts_df(data: dict) -> pd.DataFrame:22    raw = data.get("users_by_cohorts", [])23    if not raw:24        return pd.DataFrame(columns=["cohort_day", "user_count"])25    df = pd.DataFrame(raw)26    df["cohort_day"] = pd.to_numeric(df["cohort_day"], errors="coerce")27    df["user_count"] = pd.to_numeric(df["user_count"], errors="coerce")28    return df.dropna().sort_values("cohort_day").reset_index(drop=True)29 30 31try:32    data = load_data()33except Exception as e:34    st.error(f"Ошибка загрузки data.json: {e}")35    st.stop()36 37st.title("📊 Blockchain Dashboard")38 39# KPI40c1, c2, c3 = st.columns(3)41c1.metric("Total TX", f"{data['total_tx_amount']:,}")42c2.metric("DAU", f"{data['dau']:,}")43c3.metric("New Wallets", f"{data['new_wallets_amount']:,}")44 45# Chart46st.subheader("User Activity by Cohort Day")47 48df = build_cohorts_df(data)49 50if df.empty:51    st.warning("Нет данных для графика.")52else:53    # 1. Plotly (primary)54    fig = px.area(df, x="cohort_day", y="user_count",55                  title="Cohort Activity",56                  template="plotly_white")57    fig.update_layout(height=400, margin=dict(l=20, r=20, t=40, b=20))58    st.plotly_chart(fig, use_container_width=True)59 60    # 2. Matplotlib PNG (server-side, always visible)61    mpl_fig, ax = plt.subplots(figsize=(10, 3))62    ax.fill_between(df["cohort_day"], df["user_count"], alpha=0.4)63    ax.plot(df["cohort_day"], df["user_count"], linewidth=2)64    ax.set_xlabel("Cohort Day")65    ax.set_ylabel("Users")66    ax.set_title("Cohort Activity (server-rendered)")67    ax.grid(alpha=0.3)68    st.pyplot(mpl_fig)69    plt.close(mpl_fig)70 71# Raw data72with st.expander("Raw Data"):73    st.write(data)74