Vetting/internal/web/templates/host_page.templ

package templates

import (
	"bytes"
	"context"
	"fmt"
	"time"

	"vetting/internal/model"
	"vetting/internal/store"
)

// HostPageData is the payload HostPage renders. Host + LastSeenAt drive
// the summary drawer; Runs is the full newest-first run list for this
// host; ActiveRun is the non-terminal run (if any) that fills the sticky
// in-flight banner and highlights one row in the runs table; RunStages
// maps runID → stage rows so each row can paint its own 9-dot strip
// without a per-render query ladder in the template.
type HostPageData struct {
	Host       model.Host
	LastSeenAt *time.Time
	Runs       []model.Run
	ActiveRun  *model.Run
	RunStages  map[int64][]model.Stage
}

// HostPage is the host-focused URL: summary + actions + in-flight banner
// + runs table. Everything run-specific (pipeline, logs, sub-steps, spec
// diffs, hold banner) lives on /runs/{runID} instead. SSE targets are
// scoped per region so live tile refreshes don't reflow the whole page.
templ HostPage(d HostPageData) {
	@Layout(d.Host.Name) {
		<section class="host-page" hx-ext="sse" sse-connect="/events">
			<nav class="breadcrumb">
				<a href="/">Dashboard</a>
				<span class="breadcrumb-sep">/</span>
				<span>{ d.Host.Name }</span>
			</nav>

			@HostSummary(d)
			@HostActions(d)
			@InFlightBanner(d)

			if len(d.Runs) == 0 {
				@HostEmptyState(d)
			} else {
				@RunsTable(d)
			}
		</section>
	}
}

// HostSummary is the compact meta card at the top of the host page:
// hostname, last-seen chip, MAC, WoL target, expected spec (collapsed).
// SSE-swap target so an operator edit / heartbeat arriving mid-view
// updates the card without a reload.
templ HostSummary(d HostPageData) {
	<section
		id={ fmt.Sprintf("detail-summary-%d", d.Host.ID) }
		class="host-summary"
		sse-swap={ fmt.Sprintf("detail-summary-%d", d.Host.ID) }
		hx-swap="outerHTML"
	>
		<div class="host-summary-head">
			<h1 class="host-summary-name">{ d.Host.Name }</h1>
			<span class={ "tile-last-seen", lastSeenClass(d.LastSeenAt) }>{ lastSeenLabel(d.LastSeenAt) }</span>
		</div>
		<dl class="host-summary-meta">
			<div>
				<dt>MAC</dt>
				<dd>{ d.Host.MAC }</dd>
			</div>
			<div>
				<dt>WoL</dt>
				<dd>{ fmt.Sprintf("%s:%d", d.Host.WoLBroadcastIP, d.Host.WoLPort) }</dd>
			</div>
		</dl>
		if d.Host.Notes != "" {
			<div class="host-summary-notes">
				<h3>Notes</h3>
				<p>{ d.Host.Notes }</p>
			</div>
		}
		<details class="host-summary-spec">
			<summary>Expected spec</summary>
			<pre class="host-summary-spec-yaml">{ d.Host.ExpectedSpecYAML }</pre>
		</details>
	</section>
}

// HostActions is the primary-action row: Start vetting (enabled only when
// no active run AND host is heartbeating), Delete host. Run-level actions
// (Cancel / Override / View report) live on the run page — the host page
// only exposes things scoped to the host itself.
templ HostActions(d HostPageData) {
	<section
		id={ fmt.Sprintf("detail-actions-%d", d.Host.ID) }
		class="host-actions"
		sse-swap={ fmt.Sprintf("detail-actions-%d", d.Host.ID) }
		hx-swap="outerHTML"
	>
		<div class="host-actions-row">
			if hostCanStart(d) {
				<form method="post" action={ templ.SafeURL(fmt.Sprintf("/hosts/%d/start", d.Host.ID)) } class="inline host-start-form">
					<fieldset class="host-profile-picker">
						<legend>Profile</legend>
						<label>
							<input type="radio" name="profile" value="quick" checked/>
							<span class="profile-label">quick</span>
							<span class="profile-desc">~10 min — post-repair sanity check</span>
						</label>
						<label>
							<input type="radio" name="profile" value="deep"/>
							<span class="profile-label">deep</span>
							<span class="profile-desc">~8–12 h — overnight full-disk verify</span>
						</label>
						<label>
							<input type="radio" name="profile" value="soak"/>
							<span class="profile-label">soak</span>
							<span class="profile-desc">≥24 h — burn-in for intermittent faults</span>
						</label>
					</fieldset>
					<label class="host-nd-toggle">
						<input type="checkbox" name="non_destructive" value="1"/>
						<span>Non-destructive</span>
						<span class="nd-hint">Skips the Storage wipe-and-verify stage. All other stages run normally.</span>
					</label>
					<button type="submit" class="btn-primary">Start vetting</button>
				</form>
			} else if hostCanStartIfOnline(d) {
				<div class="offline-hint">
					<button type="button" disabled>Start vetting</button>
					<span>Host is offline — <a href="/hosts/new">run the reporter script</a> on the target host to bring it online.</span>
				</div>
			} else {
				<button type="button" disabled>Run in flight</button>
			}
			<form method="post" action={ templ.SafeURL(fmt.Sprintf("/hosts/%d/delete", d.Host.ID)) } class="inline" data-confirm="Delete this host and all its runs?">
				<button type="submit" class="btn-danger">Delete host</button>
			</form>
		</div>
	</section>
}

// InFlightBanner is the sticky "Run #N in progress — open →" strip that
// shows only when an active (non-terminal) run exists. SSE target so a
// run starting or ending flips the banner live.
templ InFlightBanner(d HostPageData) {
	<section
		id={ fmt.Sprintf("detail-inflight-%d", d.Host.ID) }
		class="in-flight-banner-wrap"
		sse-swap={ fmt.Sprintf("detail-inflight-%d", d.Host.ID) }
		hx-swap="outerHTML"
	>
		if d.ActiveRun != nil {
			<a class="in-flight-banner" href={ templ.SafeURL(fmt.Sprintf("/runs/%d", d.ActiveRun.ID)) }>
				<span class="in-flight-label">Run #{ fmt.Sprintf("%d", d.ActiveRun.ID) } in progress —</span>
				<span class="in-flight-state">{ tileStatus(d.ActiveRun) }</span>
				<span class="in-flight-open">open →</span>
			</a>
		}
	</section>
}

// HostEmptyState replaces the runs table with a big call-to-action when
// this host has never had a run. Only renders when the host is both
// reachable AND has no runs — the standard "Run in flight"-ish disabled
// button from HostActions handles the other corners.
templ HostEmptyState(d HostPageData) {
	<section class="host-empty-state">
		<p class="host-empty-title">No runs yet.</p>
		<p class="host-empty-sub">Kick off the first vetting run whenever the host is heartbeating.</p>
		if hostCanStart(d) {
			<form method="post" action={ templ.SafeURL(fmt.Sprintf("/hosts/%d/start", d.Host.ID)) } class="inline">
				<button type="submit" class="btn-primary big">Start vetting</button>
			</form>
		} else {
			<div class="offline-hint">
				<button type="button" class="btn-primary big" disabled>Start vetting</button>
				<span>Host is offline — <a href="/hosts/new">run the reporter script</a> on the target host to bring it online.</span>
			</div>
		}
	</section>
}

// RunsTable is one row per run, newest first. Each row carries its own
// SSE-swap target so live state changes (a running row flipping to
// passed) update one <tr> without re-rendering the whole table.
templ RunsTable(d HostPageData) {
	<section class="host-runs">
		<h2>Runs</h2>
		<table class="runs-table">
			<thead>
				<tr>
					<th>Run</th>
					<th>State</th>
					<th>Started</th>
					<th>Duration</th>
					<th>Stages</th>
					<th></th>
				</tr>
			</thead>
			<tbody>
				for _, r := range d.Runs {
					@RunRow(RunRowData{
						Run:    r,
						Stages: d.RunStages[r.ID],
						Live:   d.ActiveRun != nil && d.ActiveRun.ID == r.ID,
					})
				}
			</tbody>
		</table>
	</section>
}

// RunRowData is a single row's payload. Live is true for the currently
// non-terminal run so CSS can highlight it at the top of the table.
type RunRowData struct {
	Run    model.Run
	Stages []model.Stage
	Live   bool
}

// RunRow renders one <tr> keyed by runrow-{runID}. State changes fire
// runrow-{runID} from the orchestrator so the single row re-renders with
// its updated state + stage-strip without reloading the host page.
templ RunRow(d RunRowData) {
	<tr
		id={ fmt.Sprintf("runrow-%d", d.Run.ID) }
		class={ "runs-row", "runs-row-" + tileMood(&d.Run), runRowLiveClass(d.Live) }
		sse-swap={ fmt.Sprintf("runrow-%d", d.Run.ID) }
		hx-swap="outerHTML"
	>
		<td class="runs-col-id">
			<a href={ templ.SafeURL(fmt.Sprintf("/runs/%d", d.Run.ID)) }>{ fmt.Sprintf("#%d", d.Run.ID) }</a>
		</td>
		<td class="runs-col-state">
			<span class={ "run-status-badge", "run-status-" + tileMood(&d.Run) }>{ tileStatus(&d.Run) }</span>
		</td>
		<td class="runs-col-started">{ relativeTime(d.Run.StartedAt) }</td>
		<td class="runs-col-duration">{ runDuration(&d.Run) }</td>
		<td class="runs-col-strip">
			<div class="stage-strip">
				for _, name := range store.DefaultStageOrder {
					{{ st := stageForName(d.Stages, name) }}
					<span class={ "stage-dot", "stage-dot-sm", "stage-dot-" + string(st.State) } title={ name }></span>
				}
			</div>
		</td>
		<td class="runs-col-open">
			<a class="runs-open-link" href={ templ.SafeURL(fmt.Sprintf("/runs/%d", d.Run.ID)) }>open →</a>
		</td>
	</tr>
}

// runRowLiveClass tags the currently non-terminal run so CSS can
// highlight it. Empty string for every other row.
func runRowLiveClass(live bool) string {
	if live {
		return "runs-row-live"
	}
	return ""
}

// hostCanStart is the host-page analogue of canStart. Guards the Start
// button on two things: there's no active run, AND the host is currently
// heartbeating. Mirrors the StartRun handler's preflight so the button
// never offers a click the server rejects.
func hostCanStart(d HostPageData) bool {
	if !hostCanStartIfOnline(d) {
		return false
	}
	if d.LastSeenAt == nil {
		return false
	}
	return time.Since(*d.LastSeenAt) <= 60*time.Second
}

// hostCanStartIfOnline is the run-state half of hostCanStart, split out
// so HostActions can distinguish "run in flight" (no button) from "run
// is done / no run yet but host is offline" (disabled button).
func hostCanStartIfOnline(d HostPageData) bool {
	return d.ActiveRun == nil
}

// profileChipValue normalizes a Run.Profile string for display on the
// run page chip. Older runs with an empty column predate Phase 1 — show
// them as "quick" (the prior implicit default).
func profileChipValue(p string) string {
	if p == "" {
		return "quick"
	}
	return p
}

func runDuration(r *model.Run) string {
	if r == nil || r.StartedAt.IsZero() {
		return ""
	}
	end := time.Now()
	if r.CompletedAt != nil {
		end = *r.CompletedAt
	}
	d := end.Sub(r.StartedAt)
	if d < 0 {
		d = 0
	}
	return fmtElapsed(d, true)
}

// stageForName returns the persisted Stage row for a given name, or a
// synthetic pending-state stub when no row has been seeded yet (e.g.
// a run still in a pre-stage). Keeps the template free of nil checks —
// the caller always gets a concrete Stage.
func stageForName(stages []model.Stage, name string) model.Stage {
	for _, s := range stages {
		if s.Name == name {
			return s
		}
	}
	return model.Stage{Name: name, State: model.StagePending}
}

// hasCriticalDiff opens the spec-diff <details> by default when any diff
// is critical — operator shouldn't have to click to see the blocker.
func hasCriticalDiff(diffs []model.SpecDiff) bool {
	for _, d := range diffs {
		if d.Severity == "critical" && !d.Ignored {
			return true
		}
	}
	return false
}

func diffBadgeClass(diffs []model.SpecDiff) string {
	for _, d := range diffs {
		if d.Severity == "critical" && !d.Ignored {
			return "diff-badge-critical"
		}
	}
	return "diff-badge-warn"
}

// relativeTime renders a past time as "2m ago" / "1h ago" / "3d ago".
// Future times (clock skew) render as "now" so the runs table never
// shows nonsense when a host's clock is ahead of the orchestrator.
func relativeTime(t time.Time) string {
	if t.IsZero() {
		return ""
	}
	d := time.Since(t)
	if d < 0 {
		return "now"
	}
	if d < time.Minute {
		return "just now"
	}
	if d < time.Hour {
		return fmt.Sprintf("%dm ago", int(d/time.Minute))
	}
	if d < 24*time.Hour {
		return fmt.Sprintf("%dh ago", int(d/time.Hour))
	}
	return fmt.Sprintf("%dd ago", int(d/(24*time.Hour)))
}

// RenderHostSummaryString, RenderHostActionsString, and
// RenderInFlightBannerString render one region to a string for the
// orchestrator's SSE publish path. Matches the RenderTileString pattern.
func RenderHostSummaryString(d HostPageData) string {
	var buf bytes.Buffer
	_ = HostSummary(d).Render(context.Background(), &buf)
	return buf.String()
}

func RenderHostActionsString(d HostPageData) string {
	var buf bytes.Buffer
	_ = HostActions(d).Render(context.Background(), &buf)
	return buf.String()
}

func RenderInFlightBannerString(d HostPageData) string {
	var buf bytes.Buffer
	_ = InFlightBanner(d).Render(context.Background(), &buf)
	return buf.String()
}

// RenderRunRowString renders one row for the runs table over SSE when
// a run's state changes. The orchestrator fires runrow-{runID} at every
// site that already fires tile-{hostID} + pipeline-{runID}.
func RenderRunRowString(d RunRowData) string {
	var buf bytes.Buffer
	_ = RunRow(d).Render(context.Background(), &buf)
	return buf.String()
}