"""
Human+ — Page 3: Protocol Result
Refactored: protocol sections pakai st.expander native.
"""

import streamlit as st
from ui.components import (
    render_section_label,
    render_protocol_section,
    render_highlight_quote,
    render_success_banner,
    render_error_state,
    render_loading_steps,
    render_progress_bar,
    PROTOCOL_STEPS,
)


def render_protocol_page():
    if not st.session_state.get("extracted_biomarkers"):
        render_error_state(
            title="Belum ada hasil analisis",
            message="Silakan kembali dan upload hasil lab Anda terlebih dahulu.",
        )
        if st.button("← Kembali ke Upload", use_container_width=True):
            st.session_state.step = 1
            st.rerun()
        return

    if st.session_state.get("generated_protocol"):
        _render_protocol_results()
        return

    _run_protocol_generation()


# ── Generator ────────────────────────────────────────────────────────

def _run_protocol_generation():
    render_section_label("MENYUSUN PROTOCOL ANDA", "🧬")

    status_ph   = st.empty()
    progress_ph = st.empty()
    steps_ph    = st.empty()

    def _update(step_idx: int, msg: str):
        with status_ph:
            st.caption(f"🧬 {msg}...")
        with progress_ph:
            render_progress_bar((step_idx + 0.5) / len(PROTOCOL_STEPS))
        with steps_ph:
            render_loading_steps(PROTOCOL_STEPS, step_idx)

    # Step 0 — load vector store
    _update(0, PROTOCOL_STEPS[0])
    try:
        from core.rag_engine import get_vector_store
        vector_store = get_vector_store()
    except Exception as e:
        _render_gen_error(str(e), steps_ph, status_ph, progress_ph)
        return

    # Step 1-3 — generate
    _update(1, PROTOCOL_STEPS[1])
    _update(2, PROTOCOL_STEPS[2])
    try:
        from core.protocol_generator import generate_protocol
        protocol = generate_protocol(
            biomarkers=st.session_state.extracted_biomarkers,
            vector_store=vector_store,
        )
    except Exception as e:
        _render_gen_error(str(e), steps_ph, status_ph, progress_ph)
        return

    _update(3, PROTOCOL_STEPS[3])
    import time; time.sleep(0.3)

    st.session_state.generated_protocol = protocol

    with progress_ph:
        render_progress_bar(1.0)
    with status_ph:
        st.caption("✅ Protocol siap")

    import time; time.sleep(0.4)
    st.rerun()


def _render_gen_error(msg, steps_ph, status_ph, progress_ph):
    for ph in [steps_ph, status_ph, progress_ph]:
        ph.empty()
    render_error_state(title="Gagal Membuat Protocol", message=msg, show_contact=True)
    col1, col2 = st.columns(2)
    with col1:
        if st.button("← Kembali ke Hasil Lab", use_container_width=True):
            st.session_state.step = 2
            st.rerun()
    with col2:
        if st.button("🔄 Coba Lagi", type="primary", use_container_width=True):
            st.rerun()


# ── Results ──────────────────────────────────────────────────────────

def _render_protocol_results():
    protocol = st.session_state.generated_protocol

    render_success_banner(
        title="Protocol Personal Siap ✨",
        subtitle="Hyperpersonalized berdasarkan biomarker Anda · Human+ Bali",
    )

    # Summary block — native info box
    if protocol.get("summary"):
        st.info(f"🔍 **RINGKASAN TEMUAN UTAMA**\n\n{protocol['summary']}")

    render_section_label("PROTOCOL PERSONAL ANDA", "📋")

    render_protocol_section("iv_drip",     protocol.get("iv_drip", ""))
    render_protocol_section("supplements", protocol.get("supplements", ""))
    render_protocol_section("lifestyle",   protocol.get("lifestyle", ""))
    render_protocol_section("retest",      protocol.get("retest", ""))

    render_highlight_quote(
        "Tubuh Anda bukan sekadar 'normal' — Anda layak mendapatkan yang optimal. "
        "Protocol ini adalah langkah pertama dari perjalanan From Injured → Optimized."
    )

    # ── Download ──────────────────────────────────────────────────
    render_section_label("SIMPAN & BAGIKAN", "💾")

    col_pdf, col_nav = st.columns(2)

    with col_pdf:
        try:
            from core.report_generator import generate_pdf_report
            pdf_bytes = generate_pdf_report(
                biomarkers=st.session_state.get("extracted_biomarkers", []),
                protocol=protocol,
            )
            st.download_button(
                label="📄 Download PDF",
                data=pdf_bytes,
                file_name="Human+_Protocol_Report.pdf",
                mime="application/pdf",
                use_container_width=True,
            )
        except Exception:
            # Fallback txt
            st.download_button(
                label="📥 Download Report (.txt)",
                data=_format_txt(protocol),
                file_name="Human+_Protocol_Report.txt",
                mime="text/plain",
                use_container_width=True,
            )

    with col_nav:
        if st.button("← Lihat Hasil Lab", use_container_width=True):
            st.session_state.generated_protocol = None
            st.session_state.step = 2
            st.rerun()

    # ── Book session CTA — native st.link_button ──────────────────
    st.write("")
    st.markdown("---")
    st.markdown("### 🌴 Ready untuk level berikutnya?")
    st.write("Book sesi konsultasi dengan tim Human+ Bali untuk protocol yang direview langsung oleh Benjamin White.")
    st.link_button(
        "Book di Instagram →",
        "https://instagram.com/bennywhitethatsright",
        use_container_width=True,
        type="primary",
    )

    st.write("")
    if st.button("🔄 Analisis Lab Baru", use_container_width=True):
        for k in ["uploaded_pdf_bytes", "extracted_biomarkers", "generated_protocol", "pdf_filename"]:
            st.session_state[k] = None
        st.session_state.step = 1
        st.rerun()


def _format_txt(protocol: dict) -> str:
    prios = ", ".join(protocol.get("key_priorities", [])) or "-"
    return (
        "╔══════════════════════════════════════════╗\n"
        "║     HUMAN+ LAB-TO-PROTOCOL REPORT       ║\n"
        "║     From Injured → Optimized            ║\n"
        "╚══════════════════════════════════════════╝\n\n"
        f"PRIORITAS UTAMA: {prios}\n\n"
        f"📌 RINGKASAN\n{'-'*40}\n{protocol.get('summary','')}\n\n"
        f"💉 IV DRIP\n{'-'*40}\n{protocol.get('iv_drip','')}\n\n"
        f"💊 SUPLEMEN\n{'-'*40}\n{protocol.get('supplements','')}\n\n"
        f"🧊 LIFESTYLE\n{'-'*40}\n{protocol.get('lifestyle','')}\n\n"
        f"📅 RETEST\n{'-'*40}\n{protocol.get('retest','')}\n\n"
        "══════════════════════════════════════════\n"
        "Human+ Bali · @bennywhitethatsright\n"
        "Bukan pengganti konsultasi medis.\n"
        "══════════════════════════════════════════\n"
    )