import os
from datetime import datetime

import pytz
import streamlit as st
from apscheduler.schedulers.background import BackgroundScheduler

from monitor_logic import diagnose_n8n_webhook, run_monitor_check


# Timezone configuravel via variavel de ambiente (padrao: America/Sao_Paulo)
TIMEZONE = os.getenv("TIMEZONE", "America/Sao_Paulo")
tz = pytz.timezone(TIMEZONE)


st.set_page_config(
    page_title="Monitor Evolution API",
    page_icon="🤖",
    layout="wide",
)


def gerar_tabela_html(logs):
    """Gera tabela HTML com estilos inline para garantir funcionamento."""
    if not logs:
        return ""

    estilo_tabela = "width: 100%; border-collapse: collapse; margin-top: 10px;"
    estilo_header = (
        "background-color: #f0f2f6; padding: 12px 15px; text-align: center; "
        "font-weight: bold; font-size: 16px; border-bottom: 2px solid #ddd;"
    )
    estilo_celula = (
        "padding: 10px 15px; text-align: center; font-size: 14px; "
        "border-bottom: 1px solid #eee;"
    )
    estilo_celula_detalhes = (
        "padding: 10px 15px; text-align: left; font-size: 14px; "
        "border-bottom: 1px solid #eee;"
    )

    html = f'<table style="{estilo_tabela}">'

    html += "<thead><tr>"
    html += f'<th style="{estilo_header}">Hora</th>'
    html += f'<th style="{estilo_header}">Status</th>'
    html += f'<th style="{estilo_header}">WhatsApp</th>'
    html += f'<th style="{estilo_header}">Email</th>'
    html += f'<th style="{estilo_header}">Detalhes</th>'
    html += "</tr></thead>"

    html += "<tbody>"
    for log in logs:
        html += "<tr>"
        html += f'<td style="{estilo_celula}">{log["Hora"]}</td>'
        html += f'<td style="{estilo_celula}">{log["Status"]}</td>'
        html += f'<td style="{estilo_celula}">{log["WhatsApp"]}</td>'
        html += f'<td style="{estilo_celula}">{log["Email"]}</td>'
        html += f'<td style="{estilo_celula_detalhes}">{log["Detalhes"]}</td>'
        html += "</tr>"
    html += "</tbody></table>"

    return html


if "logs" not in st.session_state:
    st.session_state["logs"] = []

if "last_run" not in st.session_state:
    st.session_state["last_run"] = "Nunca"


def scheduled_job():
    """Executa verificacao agendada (background thread)."""
    now = datetime.now(tz)
    print(f"[{now}] Executando verificacao agendada...")
    status, messages, whatsapp_status, email_status = run_monitor_check()
    print(f"Status: {status} | WhatsApp: {whatsapp_status} | Email: {email_status}")
    print("\n".join(messages))


@st.cache_resource
def init_scheduler():
    scheduler = BackgroundScheduler(timezone=TIMEZONE)
    scheduler.add_job(
        scheduled_job,
        "cron",
        hour=8,
        minute=0,
        second=0,
        id="daily_080000_check",
        replace_existing=True,
    )
    scheduler.start()
    return scheduler


scheduler = init_scheduler()


st.title("🤖 Monitor Evolution API + Webhook")
st.markdown("---")

col1, col2 = st.columns(2)

with col1:
    st.metric(label="Ultima Verificacao", value=st.session_state["last_run"])

with col2:
    st.write("### Status Agendador")
    st.success("✅ Ativo (diariamente as 08:00:00 | intervalo 24h)")

st.markdown("### Acoes")

if st.button("🚀 Executar Verificacao Agora", type="primary"):
    with st.spinner("Verificando status dos servicos..."):
        status, messages, whatsapp_status, email_status = run_monitor_check()
        now = datetime.now(tz)
        st.session_state["last_run"] = now.strftime("%H:%M:%S")

        entry = {
            "Hora": now.strftime("%H:%M:%S"),
            "Status": "✅ Sucesso" if status else "❌ Erro",
            "WhatsApp": whatsapp_status,
            "Email": email_status,
            "Detalhes": " | ".join(messages),
        }
        st.session_state["logs"].insert(0, entry)

        if status:
            st.success("✅ Todos os servicos estao operacionais!")
        else:
            st.error("❌ Falha detectada em um ou mais servicos. Verifique os logs.")

st.markdown("---")
st.markdown("### Historico de Execucoes (Sessao Atual)")

if st.session_state["logs"]:
    tabela_html = gerar_tabela_html(st.session_state["logs"])
    st.markdown(tabela_html, unsafe_allow_html=True)
else:
    st.info("ℹ️ Nenhuma verificacao executada nesta sessao ainda.")


st.sidebar.title("ℹ️ Sobre")
st.sidebar.info(
    """
    Este aplicativo monitora:

    1. **Evolution API**: Verifica se a instancia esta online.
    2. **N8N Webhook**: Verifica se o endpoint responde.

    **Notificacoes:**
    - ✅ **Sucesso**: Envia WhatsApp.
    - ❌ **Erro**: Envia Email.
    """
)

st.sidebar.markdown("---")

with st.sidebar.expander("🛠️ Diagnostico N8N"):
    st.write("Teste isolado do Webhook N8N")
    if st.button("Testar Webhook N8N", key="btn_diag"):
        with st.spinner("Enviando POST de teste..."):
            success, log_data = diagnose_n8n_webhook()

            if success:
                st.success(f"✅ Status: {log_data['status_code']}")
            else:
                st.error(f"❌ Erro: {log_data.get('status_code') or log_data.get('error')}")

            st.json(log_data)

st.sidebar.markdown("---")
st.sidebar.caption("Disparador automatico: diariamente as 08:00:00 (24h)")