/**
 * SiPongi+ Scraper & Realtime Karhutla Monitor
 * Base: https://sipongi.gakkum.kehutanan.go.id / https://opsroom.sipongidata.my.id
 * Data: Titik Panas (Hotspot), Sebaran Karhutla, Indikasi Luas Kebakaran, Daops Pemadaman, Berita Terkini
 */

import fetch from 'node-fetch'

const OPS_API = 'https://opsroom.sipongidata.my.id/api'
const USER_AGENT = 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/124.0.0.0 Safari/537.36'

const defaultHeaders = {
    'User-Agent': USER_AGENT,
    'Accept': 'application/json, text/plain, */*',
    'Referer': 'https://sipongi.gakkum.kehutanan.go.id/'
}

/**
 * Mengambil ringkasan statistik kebakaran nasional
 */
export async function getSummaryKebakaran() {
    try {
        const res = await fetch(`${OPS_API}/getSummaryKebakaran`, { headers: defaultHeaders })
        if (!res.ok) throw new Error(`HTTP Error ${res.status}`)
        return await res.json()
    } catch (e) {
        console.error('[SiPongi getSummaryKebakaran Error]:', e.message)
        return null
    }
}

/**
 * Mengambil data titik panas (Hotspot) realtime dari satelit NASA-MODIS, SNPP, & NOAA20
 * @param {Object} options
 * @param {number} options.late Jam terakhir (default: 24 jam)
 * @param {Array<string>} options.satelit Satelit pemantau
 * @param {Array<string>} options.confidence Tingkat kepercayaan ('low', 'medium', 'high')
 */
export async function getRealtimeHotspots({ late = 24, satelit = ['NASA-MODIS', 'NASA-SNPP', 'NASA-NOAA20'], confidence = ['low', 'medium', 'high'] } = {}) {
    try {
        const params = new URLSearchParams({
            wilayah: 'IN',
            filterperiode: 'false',
            late: String(late)
        })
        satelit.forEach(s => params.append('satelit[]', s))
        confidence.forEach(c => params.append('confidence[]', c))

        const res = await fetch(`${OPS_API}/opsroom/indoHotspot?${params.toString()}`, { headers: defaultHeaders })
        if (!res.ok) throw new Error(`HTTP Error ${res.status}`)
        const geojson = await res.json()

        const features = geojson.features || []
        const provinceCounts = {}
        const confidenceCounts = { low: 0, medium: 0, high: 0 }
        const satelliteCounts = {}

        features.forEach(f => {
            const p = f.properties || {}
            const prov = p.nama_provinsi || p.provinsi || 'Lainnya'
            const conf = (p.confidence_level || 'low').toLowerCase()
            const sat = p.sumber || 'Unknown'

            provinceCounts[prov] = (provinceCounts[prov] || 0) + 1
            confidenceCounts[conf] = (confidenceCounts[conf] || 0) + 1
            satelliteCounts[sat] = (satelliteCounts[sat] || 0) + 1
        })

        // Sort provinsi berdasarkan titik panas terbanyak
        const topProvinces = Object.entries(provinceCounts)
            .sort((a, b) => b[1] - a[1])
            .map(([provinsi, count]) => ({ provinsi, count }))

        return {
            total_hotspots: features.length,
            periode_jam: late,
            satellite_counts: satelliteCounts,
            confidence_counts: confidenceCounts,
            top_provinces: topProvinces,
            features
        }
    } catch (e) {
        console.error('[SiPongi getRealtimeHotspots Error]:', e.message)
        return null
    }
}

/**
 * Mengambil operasi pemadaman terkini oleh Manggala Agni / Daops
 */
export async function getDaopsPemadaman() {
    try {
        const res = await fetch(`${OPS_API}/daops/pemadaman`, { headers: defaultHeaders })
        if (!res.ok) throw new Error(`HTTP Error ${res.status}`)
        const json = await res.json()
        const features = json?.data?.features || []
        return {
            total_operasi: features.length,
            operations: features.map(f => ({
                id: f.properties?.id,
                daops: f.properties?.nama_daops || f.properties?.daops,
                provinsi: f.properties?.nama_provinsi || f.properties?.provinsi,
                status: f.properties?.status,
                tanggal: f.properties?.tanggal,
                luas_terbakar: f.properties?.luas_terbakar,
                lokasi: f.properties?.lokasi,
                koordinat: f.geometry?.coordinates
            }))
        }
    } catch (e) {
        console.error('[SiPongi getDaopsPemadaman Error]:', e.message)
        return null
    }
}

/**
 * Mengambil daftar berita terkini Karhutla KLHK / Kemenhut
 */
export async function getBeritaKarhutla(page = 1, perPage = 6) {
    try {
        const res = await fetch(`${OPS_API}/listBerita?direction=desc&sortBy=created_at&page=${page}&per_page=${perPage}`, { headers: defaultHeaders })
        if (!res.ok) throw new Error(`HTTP Error ${res.status}`)
        const json = await res.json()
        const items = json.data || []
        return items.map(item => ({
            id: item.id,
            title: item.title,
            slug: item.slug,
            date: item.created_at ? item.created_at.split('T')[0] : '',
            image: item.image ? (item.image.startsWith('http') ? item.image : `https://opsroom.sipongidata.my.id/storage/${item.image}`) : null,
            content: item.content ? item.content.replace(/<[^>]+>/g, '').trim() : ''
        }))
    } catch (e) {
        console.error('[SiPongi getBeritaKarhutla Error]:', e.message)
        return []
    }
}

export default {
    getSummaryKebakaran,
    getRealtimeHotspots,
    getDaopsPemadaman,
    getBeritaKarhutla
}