"""Example: Streamlit page patterns - from actual pages/ files."""

import streamlit as st


# =============================================================================
# Example 1: Home page (Home.py)
# =============================================================================


def render_home_page():
    """Simplified version of Home.py."""

    st.set_page_config(
        page_title="Motief: de stematlas",
        page_icon="🗺️",
        layout="centered",
        initial_sidebar_state="expanded",
    )

    st.title("🗺️ Motief: de stematlas")
    st.markdown(
        "**Motief** brengt de Nederlandse Tweede Kamer in kaart op basis van "
        "echte stemmingen over moties. Gebruik de Stemwijzer om te ontdekken welke "
        "partij het beste bij jouw standpunten past, of verken de politieke ruimte "
        "zelf in de Explorer."
    )

    st.divider()

    col1, col2 = st.columns(2)

    with col1:
        st.subheader("🗳️ Stemwijzer")
        st.markdown(
            "Stem op echte Tweede Kamer moties en zie welke partij het "
            "dichtst bij jouw keuzes staat."
        )
        st.page_link("pages/1_Stemwijzer.py", label="Open Stemwijzer", icon="🗳️")

    with col2:
        st.subheader("🔭 Politiek Explorer")
        st.markdown(
            "Verken het politieke kompas, partijtrajecten door de tijd, "
            "en zoek vergelijkbare moties op in het archief."
        )
        st.page_link("pages/2_Explorer.py", label="Open Explorer", icon="🔭")

    st.divider()
    st.caption("Data: Tweede Kamer API · Embeddings: QWEN (via OpenRouter)")


# =============================================================================
# Example 2: Thin page wrapper (pages/1_Stemwijzer.py)
# =============================================================================


def render_stemwijzer_page():
    """Pattern: thin page that delegates to module function."""

    st.set_page_config(
        page_title="Stemwijzer",
        page_icon="🗳️",
        layout="centered",
    )

    # Delegate to main module
    from explorer import build_mp_quiz_tab

    build_mp_quiz_tab("data/motions.db")


# =============================================================================
# Example 3: Session state initialization
# =============================================================================


def init_session_state():
    """Pattern: Initialize all session state at start."""

    defaults = {
        "session_id": None,
        "current_motion_index": 0,
        "motions": [],
        "show_results": False,
        "user_votes": {},
    }

    for key, default in defaults.items():
        if key not in st.session_state:
            st.session_state[key] = default


# =============================================================================
# Example 4: Sidebar configuration
# =============================================================================


def render_sidebar():
    """Pattern: Sidebar for configuration."""

    with st.sidebar:
        st.header("Instellingen")

        motion_count = st.slider(
            "Aantal moties",
            min_value=5,
            max_value=25,
            value=10,
            help="Hoeveel moties wilt u beantwoorden?",
        )

        policy_area = st.selectbox(
            "Beleidsgebied",
            [
                "Alle",
                "Economie",
                "Klimaat",
                "Immigratie",
                "Zorg",
                "Onderwijs",
                "Defensie",
                "Sociale Zaken",
                "Algemeen",
            ],
        )

        margin_range = st.slider(
            "Controversiële moties (%)",
            min_value=0,
            max_value=100,
            value=(0, 100),
            help="Filter op hoe omstreden de moties zijn",
        )

        st.divider()

        if st.button("Start Nieuwe Sessie", type="primary"):
            return {
                "motion_count": motion_count,
                "policy_area": policy_area,
                "margin_range": margin_range,
            }

    return None


# =============================================================================
# Example 5: Motion voting interface
# =============================================================================


def render_motion_vote(motion: dict, index: int, total: int):
    """Pattern: Display motion and voting buttons."""

    st.subheader(f"Motie {index + 1} van {total}")

    # Motion content
    st.markdown(f"### {motion['title']}")

    col1, col2 = st.columns([3, 1])
    with col1:
        if motion.get("layman_explanation"):
            st.info(motion["layman_explanation"])

        with st.expander("Meer details"):
            st.markdown(f"**Datum:** {motion.get('date', 'Onbekend')}")
            st.markdown(f"**Beleidsgebied:** {motion.get('policy_area', 'Onbekend')}")

            if motion.get("description"):
                st.markdown(f"**Beschrijving:** {motion['description']}")

    with col2:
        st.metric(
            label="Winstmarge",
            value=f"{motion.get('winning_margin', 0):.0%}",
            delta="Omstreden" if motion.get("controversy_score", 0) > 0.5 else "Helder",
        )

    st.divider()

    # Voting buttons
    col1, col2, col3 = st.columns(3)

    with col1:
        st.button(
            "👍 **Voor**",
            on_click=on_vote,
            args=(motion["id"], "Voor"),
            use_container_width=True,
        )

    with col2:
        st.button(
            "👎 **Tegen**",
            on_click=on_vote,
            args=(motion["id"], "Tegen"),
            use_container_width=True,
        )

    with col3:
        st.button(
            "🤔 **Onthouden**",
            on_click=on_vote,
            args=(motion["id"], "Onthouden"),
            use_container_width=True,
        )


def on_vote(motion_id: int, vote: str):
    """Callback when user votes."""

    # Record vote
    from database import db

    db.record_vote(
        session_id=st.session_state.session_id, motion_id=motion_id, vote=vote
    )

    # Update session state
    st.session_state.user_votes[motion_id] = vote

    # Move to next or show results
    if st.session_state.current_motion_index < len(st.session_state.motions) - 1:
        st.session_state.current_motion_index += 1
    else:
        st.session_state.show_results = True

    st.rerun()


# =============================================================================
# Example 6: Results display
# =============================================================================


def render_results():
    """Pattern: Display voting results."""

    from database import db

    st.header("📊 Uw Resultaten")

    # Get party results
    results = db.get_party_results(st.session_state.session_id)

    if not results:
        st.warning("Geen resultaten beschikbaar")
        return

    # Sort by agreement
    sorted_results = sorted(
        results.items(), key=lambda x: x[1].get("agreement_percentage", 0), reverse=True
    )

    # Display top match
    if sorted_results:
        top_party, top_data = sorted_results[0]
        st.success(
            f"**Uw beste match:** {top_party} ({top_data.get('agreement_percentage', 0):.0%} overeenstemming)"
        )

    st.divider()

    # Show all parties
    for party, data in sorted_results:
        agreement = data.get("agreement_percentage", 0)

        col1, col2 = st.columns([3, 1])
        with col1:
            st.markdown(f"**{party}**")
            st.progress(agreement, text=f"{agreement:.0%}")

        with col2:
            st.metric("Overeenstemming", f"{agreement:.0%}")

    # Detailed breakdown
    with st.expander("Details per motie"):
        for motion in st.session_state.motions:
            user_vote = st.session_state.user_votes.get(motion["id"], "?")
            st.markdown(f"- **{motion['title']}**: U={user_vote}")


# =============================================================================
# Example 7: Tabs layout
# =============================================================================


def render_tabs_example():
    """Pattern: Use tabs for organizing content."""

    tab1, tab2, tab3 = st.tabs(["Compass", "Trajectories", "Zoeken"])

    with tab1:
        st.subheader("Politiek Kompas")
        st.write("Visualiseer partijposities in 2D ruimte")
        # Add compass chart...

    with tab2:
        st.subheader("Partij Trajectories")
        st.write("Bekijk hoe partijen door de tijd bewegen")
        # Add trajectory chart...

    with tab3:
        st.subheader("Zoek Moties")

        query = st.text_input("Zoekterm")
        if query:
            # Search functionality...
            st.write(f"Zoeken naar: {query}")


if __name__ == "__main__":
    # Demo rendering
    init_session_state()
    st.write("Streamlit page structure example")