app.py

"""
Streamlit app: SolarWine — Smart Shading for Vineyard Solar Panels.
5 tabs: Overview, Photosynthesis & Data, Forecasting, Shading Simulator, Documentation.
"""

from __future__ import annotations

import sys
from pathlib import Path

PROJECT_ROOT = Path(__file__).resolve().parent
if str(PROJECT_ROOT) not in sys.path:
    sys.path.insert(0, str(PROJECT_ROOT))

try:
    from dotenv import load_dotenv
    load_dotenv(PROJECT_ROOT / ".env")
except ImportError:
    pass

import os
import streamlit as st

# Copy Streamlit secrets into os.environ so downstream clients (ThingsBoard,
# IMS, etc.) can read them via os.environ without any code changes.
for key, value in st.secrets.items():
    if isinstance(value, str) and key not in os.environ:
        os.environ[key] = value

from ui.bootstrap import img_to_base64, now_israel

# ---------------------------------------------------------------------------
# Page config
# ---------------------------------------------------------------------------

st.set_page_config(page_title="SolarWine - Smart Shading for Vineyards", layout="wide")

# ---------------------------------------------------------------------------
# Migration banner (shows only when new frontend URL is configured)
# ---------------------------------------------------------------------------
_NEW_FRONTEND_URL = os.environ.get("SOLARWINE_FRONTEND_URL", "")
if _NEW_FRONTEND_URL:
    st.info(
        f"A new version of the SolarWine dashboard is available at "
        f"[{_NEW_FRONTEND_URL}]({_NEW_FRONTEND_URL}). "
        f"This Streamlit app will be retired soon.",
        icon="🔄",
    )

# ---------------------------------------------------------------------------
# Brand CSS
# ---------------------------------------------------------------------------

_BRAND_GREEN = "#00BD3E"
_BRAND_DARK = "#1A1A1A"

st.markdown(f"""
<style>
    /* SolarWine brand overrides — async font load (non-blocking) */
    @font-face {{
        font-family: 'Open Sans';
        font-style: normal;
        font-weight: 300 400 600 700;
        font-display: swap;
        src: url('https://fonts.gstatic.com/s/opensans/v40/memvYaGs126MiZpBA-UvWbX2vVnXBbObj2OVTS-mu0SC55I.woff2') format('woff2');
    }}

    html, body, [class*="css"] {{
        font-family: 'Open Sans', sans-serif;
    }}

    /* Header bar */
    header[data-testid="stHeader"] {{
        background-color: {_BRAND_DARK};
    }}

    /* Metric value color */
    [data-testid="stMetricValue"] {{
        color: {_BRAND_GREEN};
    }}

    /* Tab labels */
    button[data-baseweb="tab"] {{
        font-weight: 600;
    }}

    /* Sidebar background */
    section[data-testid="stSidebar"] {{
        background-color: {_BRAND_DARK};
    }}
    section[data-testid="stSidebar"] * {{
        color: #FFFFFF !important;
    }}
    section[data-testid="stSidebar"] button {{
        background-color: {_BRAND_GREEN} !important;
        color: #FFFFFF !important;
        border: none !important;
        border-radius: 6px !important;
    }}
    section[data-testid="stSidebar"] button:hover {{
        background-color: #00a035 !important;
    }}

    /* Hero banner */
    .hero-banner {{
        background: linear-gradient(135deg, {_BRAND_DARK} 0%, #2d3a2d 100%);
        padding: 2rem 2.5rem;
        border-radius: 12px;
        margin-bottom: 1.5rem;
        display: flex;
        align-items: center;
        gap: 2rem;
    }}
    .hero-banner img {{
        max-height: 48px;
    }}
    .hero-text {{
        color: #FFFFFF;
    }}
    .hero-text h1 {{
        margin: 0 0 0.3rem 0;
        font-size: 1.8rem;
        font-weight: 700;
        color: #FFFFFF;
    }}
    .hero-text p {{
        margin: 0;
        font-size: 1.05rem;
        color: #B8D4B8;
    }}
</style>
""", unsafe_allow_html=True)

# ---------------------------------------------------------------------------
# Hero banner with logo
# ---------------------------------------------------------------------------

_ASSETS = PROJECT_ROOT / "assets"
_logo_path = _ASSETS / "logo.png"

if _logo_path.exists():
    _logo_b64 = img_to_base64(_logo_path)
    st.markdown(f"""
    <div class="hero-banner">
        <img src="data:image/png;base64,{_logo_b64}" alt="SolarWine logo">
        <div class="hero-text">
            <h1>Smart Shading for Vineyard Solar Panels</h1>
            <p>Empowering growers · Harvesting sunshine</p>
        </div>
    </div>
    """, unsafe_allow_html=True)
else:
    st.title("SolarWine — Smart Shading for Vineyard Solar Panels")

# ---------------------------------------------------------------------------
# Sidebar
# ---------------------------------------------------------------------------

sidebar = st.sidebar
if _logo_path.exists():
    sidebar.image(str(_logo_path), width=180)

_now = now_israel()
sidebar.caption("**Site:** Yeruham, Israel")
sidebar.markdown(f"**Date:** {_now.strftime('%Y-%m-%d')}")
sidebar.markdown(f"**Time (local):** {_now.strftime('%H:%M')}")
st.session_state.current_time_israel = _now

# ---------------------------------------------------------------------------
# Navigation — only the selected page renders (avoids running all 6 tabs)
# ---------------------------------------------------------------------------

_PAGES = [
    "System Status",
    "Overview",
    "Photosynthesis & Data",
    "Forecasting",
    "Shading Simulator",
    "Documentation",
]

_selected = sidebar.radio("Navigate", _PAGES, label_visibility="collapsed")

if _selected == "System Status":
    from ui.tab_system_status import render_tab_system_status
    render_tab_system_status()
elif _selected == "Overview":
    from ui.tab_overview import render_tab_overview
    render_tab_overview()
elif _selected == "Photosynthesis & Data":
    from ui.tab_data import render_tab_data
    render_tab_data()
elif _selected == "Forecasting":
    from ui.tab_forecast import render_tab_forecast
    render_tab_forecast()
elif _selected == "Shading Simulator":
    from ui.tab_shading import render_tab_shading
    render_tab_shading()
elif _selected == "Documentation":
    from ui.tab_docs import render_tab_docs
    render_tab_docs()