<!--
Phase 23 Report View — approaching groups section. Renders the wire
`incomingGroup[]` projection as a compact grid: origin → destination
along with distance / speed / mass. The wire field carries no
ship-class info (a true blip on radar); the player only learns the
class when the group lands and a battle roster forms.
-->
<script lang="ts">
	import { getContext } from "svelte";

	import { i18n } from "$lib/i18n/index.svelte";
	import {
		RENDERED_REPORT_CONTEXT_KEY,
		type RenderedReportSource,
	} from "$lib/rendered-report.svelte";
	import { formatFloat, planetLabel } from "./format";

	const rendered = getContext<RenderedReportSource | undefined>(
		RENDERED_REPORT_CONTEXT_KEY,
	);
	const report = $derived(rendered?.report ?? null);
	const rows = $derived(report?.incomingShipGroups ?? []);
	const planets = $derived(report?.planets ?? []);
</script>

<section
	id="report-approaching-groups"
	class="grid-section"
	data-testid="report-section-approaching-groups"
>
	<h2>{i18n.t("game.report.section.approaching_groups.title")}</h2>

	{#if report === null}
		<p class="status">{i18n.t("game.report.loading")}</p>
	{:else if rows.length === 0}
		<p class="status" data-testid="approaching-groups-empty">
			{i18n.t("game.report.section.approaching_groups.empty")}
		</p>
	{:else}
		<table class="grid" data-testid="approaching-groups-table">
			<thead>
				<tr>
					<th>{i18n.t("game.report.section.approaching_groups.column.from")}</th>
					<th>{i18n.t("game.report.section.approaching_groups.column.to")}</th>
					<th class="numeric">
						{i18n.t("game.report.section.approaching_groups.column.distance")}
					</th>
					<th class="numeric">{i18n.t("game.report.section.approaching_groups.column.speed")}</th>
					<th class="numeric">{i18n.t("game.report.section.approaching_groups.column.mass")}</th>
				</tr>
			</thead>
			<tbody>
				{#each rows as r, i (i)}
					<tr data-testid="approaching-groups-row">
						<td>{planetLabel(r.origin, planets)}</td>
						<td>{planetLabel(r.destination, planets)}</td>
						<td class="numeric">{formatFloat(r.distance)}</td>
						<td class="numeric">{formatFloat(r.speed)}</td>
						<td class="numeric">{formatFloat(r.mass)}</td>
					</tr>
				{/each}
			</tbody>
		</table>
	{/if}
</section>

<style>
	.grid-section h2 {
		margin: 0 0 0.5rem;
		font-size: 1.05rem;
		color: var(--color-text);
	}
	.status {
		margin: 0;
		color: var(--color-text-muted);
		font-size: 0.9rem;
	}
	.grid {
		border-collapse: collapse;
		width: 100%;
		font-variant-numeric: tabular-nums;
		font-size: 0.85rem;
	}
	.grid th,
	.grid td {
		padding: 0.4rem 0.6rem;
		text-align: left;
		border-bottom: 1px solid var(--color-border-subtle);
	}
	.grid th {
		color: var(--color-text-muted);
		text-transform: uppercase;
		letter-spacing: 0.04em;
		font-size: 0.75rem;
	}
	.grid th.numeric,
	.grid td.numeric {
		font-family: var(--font-mono);
		text-align: right;
	}
	.grid tbody tr:hover {
		background: var(--color-surface);
	}
</style>
