<script setup lang="ts">
import { ref, computed, onMounted } from 'vue'
import { useRoute, useRouter } from 'vue-router'
import { store } from '../store'

import { ALARMS_ENDPOINT, ROBOTS_ENDPOINT, CELLSITES_ENDPOINT } from '../main'
import { get_request } from '../ajax_requests'

import Nav from '../components/Nav.vue'
import Map from '../components/Map.vue'

import { use_timeline } from '../composables/use_timeline'
import { use_filtered_data } from '../composables/use_filtered_data'

import TimelineRow from '../components/TimelineRow.vue'
import FilterRow from '../components/FilterRow.vue'

const route = useRoute()
const router = useRouter()
const loading = ref(true)
const id = Number(route.params.id)
const robot = ref(null)

const stats_fields = computed(() => [
    ['NAME',      robot.value?.name],
    ['STATUS',    robot.value?.current_incident_id ? 'ON CALL' : 'IDLE'],
    ['INCIDENT',  robot.value?.current_incident_id ?? '—'],
    ['SITE',      robot.value?.current_site_id ?? '—'],
    ['TARGET SITE',      robot.value?.target_site_id ?? '—'], // FIXME: 
    ['LAT',       robot.value?.lat],
    ['LON',       robot.value?.lon],
    ['BASE LAT',  robot.value?.base_lat],
    ['BASE LON',  robot.value?.base_lon],
    ['UPDATED',   robot.value?.updated],
])

const associated_site = computed(() =>
    store.cellsites.find(s => s.id === robot.value?.current_site_id)
)

const fetch_all = async (before?: number) => {
    const was_live = store.is_live
    const alarm_url = before ? `${ALARMS_ENDPOINT}?before=${before}` : `${ALARMS_ENDPOINT}`
    const [alarms, robotData] = await Promise.all([
        get_request(alarm_url),
        get_request(`${ROBOTS_ENDPOINT}/${id}`),
    ])
    store.set_alarms(alarms)
    robot.value = robotData
    if (before === undefined && !store.is_frozen && was_live) {
        // TODO: Repeated this fix, should break it out somewhere
        const now = Date.now()
        store.timeline_max = now
        store.timeline_position = now
    } else {
        store.timeline_max = Date.now()
    }
}

const { timeline_position_debounced, is_live_debounced, manual_refresh, freeze, snap_to_live } = use_timeline(fetch_all)
const { filtered_alarms } = use_filtered_data(is_live_debounced, timeline_position_debounced)

onMounted(async () => {
    try {
        // NOTE: Currently thinking we display the cellsites even on the robots page?
        const [robotData, sitesData] = await Promise.all([
            get_request(`${ROBOTS_ENDPOINT}/${id}`),
            store.cellsites.length === 0 ? get_request(`${CELLSITES_ENDPOINT}`) : Promise.resolve(null),
        ])
        robot.value = robotData
        if (sitesData) store.set_cellsites(sitesData)
        await fetch_all()

        if (store.alarms.length > 0) {
            const oldest = Math.min(...store.alarms.map(r => new Date(r.created + ' UTC').getTime()))
            store.timeline_min = store.timeline_min === 0 ? oldest : Math.min(store.timeline_min, oldest)
        } else if (store.timeline_min === 0) {
            store.timeline_min = Date.now() - 86400000
        }

    } catch (error) {
        console.error('Error fetching robot:', error)
        // TODO: toasts or some banner for errors
    } finally {
        loading.value = false
    }
})

</script>
<template>
    <div :class="{ mode_historical: store.is_historical && !store.is_frozen, mode_frozen: store.is_frozen }">
        <Nav />
        <div class="robot_container">

        <div v-if="loading" class="loading-overlay"><p>Loading...</p></div>
        <div v-else-if="!robot" class="not-found"><p>Not found</p></div>

        <div v-else class="robot_content">
            <div class="stats">
                <div class="page_id">{{ robot.name.toUpperCase() }}</div>
                <div class="stat_row" v-for="[key, val] in stats_fields" :key="key">
                    <span class="stat_key">{{ key }}</span>
                    <span class="stat_val" :class="key === 'STATUS' ? (robot.current_incident_id ? 'on_call' : 'idle') : ''">
                    {{ val }}
                    </span>
                </div>
            </div>

            <div class="map_container">
            <Map
                v-if="robot.lat != null && robot.lon != null"
                :center="[robot.lat, robot.lon]"
                :zoom="10"
                :robots="[robot]"
                :alarms="filtered_alarms"
            />
            </div>

            <div class="data">
            <div class="section_label">CURRENT ASSIGNMENT</div>
            <div class="link_list">

                <div v-if="robot.current_incident_id" class="entity_link"
                @click="router.push(`/incidents/${robot.current_incident_id}`)">
                <span class="link_id">INC #{{ robot.current_incident_id }}</span>
                <span class="link_arrow">→</span>
                </div>

                <div v-if="associated_site" class="entity_link"
                @click="router.push(`/cellsites/${associated_site.id}`)">
                <span class="link_id">SITE {{ associated_site.id }}</span>
                <span class="link_meta">{{ associated_site.radio }} · {{ associated_site.lat }}, {{ associated_site.lon }}</span>
                <span class="link_arrow">→</span>
                </div>

                <p v-if="!robot.current_incident_id && !associated_site">No active assignment.</p>
            </div>
            </div>
        </div>

        <FilterRow :count="filtered_alarms.length" label="alarms" />
        <TimelineRow @refresh="manual_refresh" @freeze="freeze" @snap_to_live="snap_to_live" />

    </div>
  </div>
</template>
<style scoped>
.robot_container { position: relative; padding: 1rem; }

.robot_content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  grid-template-rows: auto auto;
  grid-template-areas:
    "stats map"
    "data data";
  gap: 1rem;
  align-items: start;
}

.page_id {
    font-size: 1.4rem;
    color: var(--theme);
    margin-bottom: 1rem;
    letter-spacing: 0.05em;
}

.stat_row {
    display: flex;
    justify-content: space-between;
    padding: 0.3rem 0;
    border-bottom: 1px solid var(--theme-faint);
    font-size: 0.8rem;
    
}

.stat_key { color: var(--theme-dim); }
.stat_val { color: rgba(255, 255, 255, 0.8); }
.stat_val.on_call { color: rgba(220, 30, 30, 0.9); }
.stat_val.idle { color: rgba(100, 200, 100, 0.7); }

.stats { grid-area: stats; }
.map_container { grid-area: map; min-height: 400px; }
.data { grid-area: data; margin-top: 1rem; }

.section_label {
    font-size: 0.7rem;
    color: var(--theme-dim);
    letter-spacing: 0.08em;
    
    margin-bottom: 0.5rem;
}

.link_list { display: flex; flex-direction: column; gap: 0.3rem; }

.entity_link {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 0.6rem 1rem;
    background: rgba(20, 20, 20, 0.9);
    border-left: 3px solid var(--theme-faint);
    border-radius: 3px;
    cursor: pointer;
    
    transition: background 0.15s, border-color 0.15s;
}

.entity_link:hover {
    background: rgba(40, 40, 40, 0.9);
    border-left-color: var(--theme);
}

.link_id { color: var(--theme); font-size: 0.85rem; }
.link_meta { font-size: 0.75rem; color: rgba(255, 255, 255, 0.35); flex: 1; }
.link_arrow { color: var(--theme-dim); font-size: 0.85rem; }

.loading-overlay, .not-found {
  position: absolute; top: 0; left: 0;
  width: 100%; height: 100%;
  display: flex; justify-content: center; align-items: center;
  background: rgba(10, 10, 10, 0.95);
  z-index: 10; font-size: 1.5rem;
  color: rgba(255, 100, 0, 0.8);
}

@media (max-width: 768px) {
  .robot_content {
    grid-template-columns: 1fr;
    grid-template-areas: "stats" "map" "data";
  }
  .map_container { height: 300px; }
}
</style>
