package status

import (
	"fmt"
	"html/template"
	"net/http"
	"sync"
	"time"

	"github.com/tb/ems/internal/collector"
	"github.com/tb/ems/internal/config"
	"github.com/tb/ems/internal/engine"
	"github.com/tb/ems/internal/forecast"
	"github.com/tb/ems/internal/monitor"
	"github.com/tb/ems/internal/trip"
)

// consumerMeta holds static display info for each consumer.
var consumerMeta = map[engine.Consumer]struct{ Label, Icon string }{
	engine.ConsumerSGReady:  {"Wärmepumpe Boost (SG-Ready)", "🔥"},
	engine.ConsumerWW:       {"Warmwasser Boost", "🌡️"},
	engine.ConsumerWallboxA: {"Wallbox A (2 kW)", "🔌"},
	engine.ConsumerWallboxB: {"Wallbox B (4 kW)", "🔌"},
}

// consumerOrder defines the display order of consumers — highest EMS priority first.
var consumerOrder = []engine.Consumer{
	engine.ConsumerWallboxA,
	engine.ConsumerWallboxB,
	engine.ConsumerWW,
	engine.ConsumerSGReady,
}

// consumerRecord tracks the state of a single consumer across cycles.
type consumerRecord struct {
	active         bool
	since          time.Time
	reason         string
	manualOverride bool
	overrideUntil  time.Time
	livePowerW     float64 // from Shelly PM; 0 for non-PM devices
}

// CarOption is a selectable car for the trip mode form.
type CarOption struct {
	Key        string
	Name       string
	BatteryKWh float64
}

// Store holds the latest EMS snapshot and is safe for concurrent use.
type Store struct {
	mu           sync.RWMutex
	lastUpdate   time.Time
	errMsg       string
	state        collector.SystemState
	dryRun       bool
	wwConfigured bool
	strategic    config.StrategicConfig
	carCharging  config.CarChargingConfig
	consumers    map[engine.Consumer]*consumerRecord
	fcResult     *forecast.Result
	monitorMode     *monitor.Mode
	wwBoostDisabled *monitor.Mode
	tripMgr         *trip.Manager
	carOptions      []CarOption
	csrfToken       string
	hasAuth         bool
}

// NewStore creates a new status store.
func NewStore(dryRun bool, wwConfigured bool, strategic config.StrategicConfig, carCharging config.CarChargingConfig, mode *monitor.Mode, wwBoostDisabled *monitor.Mode, tm *trip.Manager, cars []CarOption, csrfToken string, hasAuth bool) *Store {
	consumers := make(map[engine.Consumer]*consumerRecord, len(consumerOrder))
	for _, c := range consumerOrder {
		consumers[c] = &consumerRecord{}
	}
	return &Store{
		dryRun:          dryRun,
		wwConfigured:    wwConfigured,
		strategic:       strategic,
		carCharging:     carCharging,
		consumers:       consumers,
		monitorMode:     mode,
		wwBoostDisabled: wwBoostDisabled,
		tripMgr:         tm,
		carOptions:      cars,
		csrfToken:       csrfToken,
		hasAuth:         hasAuth,
	}
}

// Update records the latest state, actions, overrides, and forecast for this cycle.
func (s *Store) Update(state collector.SystemState, actions []engine.Action, overrides map[engine.Consumer]engine.OverrideInfo, fcResult *forecast.Result, err error) {
	s.mu.Lock()
	defer s.mu.Unlock()

	s.lastUpdate = time.Now()
	s.state = state

	if err != nil {
		s.errMsg = err.Error()
	} else {
		s.errMsg = ""
	}

	if fcResult != nil {
		s.fcResult = fcResult
	}

	for _, a := range actions {
		rec, ok := s.consumers[a.Consumer]
		if !ok {
			continue
		}
		rec.active = a.TurnOn
		rec.since = time.Now()
		rec.reason = a.Reason
	}

	// Sync override state for all consumers
	for c, rec := range s.consumers {
		if info, overridden := overrides[c]; overridden {
			rec.manualOverride = info.Active
			rec.overrideUntil = info.Until
		} else {
			rec.manualOverride = false
			rec.overrideUntil = time.Time{}
		}
	}
}

// --- Template data types ---

type consumerView struct {
	Icon            string
	Label           string
	Priority        string // e.g. "①"
	ConsumerKey     string // e.g. "wallbox_a" — used for the override form
	Active          bool
	Since           time.Time
	Reason          string
	SubDetail       string // extra context line: tank temp for WW, compressor for SG-Ready
	ReadinessHint   string // shown when inactive: explains what's blocking activation
	Unconfigured    bool
	CanOverride     bool // true for Shelly consumers (hardware read-back available)
	IsWW            bool // true for ConsumerWW — shows reset button instead of override
	WWBoostDisabled bool // copied from pageData for template access inside range
	ManualOverride  bool
	OverrideUntil   time.Time
	LivePowerW      float64 // from Shelly PM; 0 for non-PM devices
}

type phaseView struct {
	Label      string
	PowerW     float64
	IsExport   bool
	AbsPowerW  float64
}

type forecastView struct {
	Available bool
	KWh       float64
	Icon      string
	Quality   string
}

type tripView struct {
	Active          bool
	CarName         string
	WallboxLabel    string // "Wallbox A" or "Wallbox B"
	CurrentSOC      float64
	EnergyKWh       float64 // energy needed
	DeadlineStr     string  // e.g. "morgen 07:00"
	StartsAtStr     string  // e.g. "heute 22:30" / "jetzt"
	DurationStr     string  // estimated charge time, e.g. "15h 45min"
	ChargingStarted bool
	ChargingSince   string // e.g. "seit 2h 10min"
	IsTight         bool   // start time already passed, deadline at risk
}

type pageData struct {
	LastUpdate       time.Time
	ErrMsg           string
	DryRun           bool
	MonitorOnly      bool
	WWBoostDisabled  bool
	BatterySOC       float64
	GridPowerW       float64
	PVProductionW    float64
	PVYieldTodayKWh  float64
	AmbientTempC     float64
	CompressorPowerW float64
	WWTopTempC       float64
	IsExporting      bool
	AbsGridW         float64
	HasPhaseData     bool
	Phases           []phaseView
	Forecast         forecastView
	Consumers        []consumerView
	Trip             tripView
	CarOptions       []CarOption
	CSRFToken        string
	HasAuth          bool // true when login is required — shows logout button
}

// SyncConsumerStates updates active flags for all consumers directly from the
// engine's current state. Called every cycle so the status page reflects reality
// even when no Action was produced (e.g. after a manual override is detected).
func (s *Store) SyncConsumerStates(states map[engine.Consumer]bool) {
	s.mu.Lock()
	defer s.mu.Unlock()
	for c, active := range states {
		if rec, ok := s.consumers[c]; ok {
			rec.active = active
		}
	}
}

// SyncDeviceStates stores live power readings from Shelly PM devices.
// Called each cycle after ReadAllStates.
func (s *Store) SyncDeviceStates(states map[engine.Consumer]engine.DeviceStatus) {
	s.mu.Lock()
	defer s.mu.Unlock()
	for c, status := range states {
		if rec, ok := s.consumers[c]; ok {
			rec.livePowerW = status.PowerW
		}
	}
}

// Handler returns an HTTP handler that renders the status page.
func (s *Store) Handler() http.HandlerFunc {
	tmpl := template.Must(template.New("status").Funcs(template.FuncMap{
		"formatW": formatW,
		"formatSince": func(t time.Time) string {
			if t.IsZero() {
				return ""
			}
			d := time.Since(t).Round(time.Minute)
			if d < time.Minute {
				return "gerade eben"
			}
			if d < time.Hour {
				return fmt.Sprintf("seit %d min", int(d.Minutes()))
			}
			h := int(d.Hours())
			m := int(d.Minutes()) % 60
			if m == 0 {
				return fmt.Sprintf("seit %d h", h)
			}
			return fmt.Sprintf("seit %d h %d min", h, m)
		},
		"socColor": func(soc float64) string {
			switch {
			case soc >= 80:
				return "#16a34a"
			case soc >= 50:
				return "#d97706"
			default:
				return "#dc2626"
			}
		},
	}).Parse(htmlTemplate))

	return func(w http.ResponseWriter, r *http.Request) {
		if r.URL.Path != "/" {
			http.NotFound(w, r)
			return
		}

		monitorOnly := s.monitorMode != nil && s.monitorMode.IsActive()
		wwBoostDisabled := s.wwBoostDisabled != nil && s.wwBoostDisabled.IsActive()
		now := time.Now()

		s.mu.RLock()
		l1, l2, l3 := s.state.PhaseL1PowerW, s.state.PhaseL2PowerW, s.state.PhaseL3PowerW
		hasPhase := l1 != 0 || l2 != 0 || l3 != 0
		forecastKWh := 0.0
		if s.fcResult != nil {
			forecastKWh = s.fcResult.TotalKWh
		}
		data := pageData{
			LastUpdate:       s.lastUpdate,
			ErrMsg:           s.errMsg,
			DryRun:           s.dryRun,
			MonitorOnly:      monitorOnly,
			WWBoostDisabled:  wwBoostDisabled,
			BatterySOC:       s.state.BatterySOC,
			GridPowerW:       s.state.GridPowerW,
			PVProductionW:    s.state.PVProductionW,
			PVYieldTodayKWh:  s.state.PVYieldTodayKWh,
			AmbientTempC:     s.state.AmbientTempC,
			CompressorPowerW: s.state.CompressorPowerW,
			WWTopTempC:       s.state.WWTopTempC,
			IsExporting:      s.state.GridPowerW < 0,
			AbsGridW:         abs(s.state.GridPowerW),
			HasPhaseData:     hasPhase,
			CSRFToken:        s.csrfToken,
			HasAuth:          s.hasAuth,
		}
		if hasPhase {
			for _, ph := range []struct {
				label string
				w     float64
			}{
				{"L1", l1}, {"L2", l2}, {"L3", l3},
			} {
				data.Phases = append(data.Phases, phaseView{
					Label:     ph.label,
					PowerW:    ph.w,
					IsExport:  ph.w < 0,
					AbsPowerW: abs(ph.w),
				})
			}
		}
		if s.fcResult != nil {
			data.Forecast = forecastView{
				Available: true,
				KWh:       s.fcResult.TotalKWh,
				Icon:      s.fcResult.QualityIcon(s.strategic),
				Quality:   s.fcResult.Quality(s.strategic),
			}
		}
		prioritySymbols := []string{"①", "②", "③", "④"}
		for i, c := range consumerOrder {
			rec := s.consumers[c]
			meta := consumerMeta[c]
			prio := ""
			if i < len(prioritySymbols) {
				prio = prioritySymbols[i]
			}
			cv := consumerView{
				Icon:            meta.Icon,
				Label:           meta.Label,
				Priority:        prio,
				ConsumerKey:     c.String(),
				Active:          rec.active,
				Since:           rec.since,
				Reason:          rec.reason,
				CanOverride:     c != engine.ConsumerWW,
				IsWW:            c == engine.ConsumerWW,
				WWBoostDisabled: c == engine.ConsumerWW && wwBoostDisabled,
				ManualOverride:  rec.manualOverride,
				OverrideUntil:   rec.overrideUntil,
				LivePowerW:      rec.livePowerW,
			}
			// SubDetail: extra context line per consumer type
			switch c {
			case engine.ConsumerSGReady:
				if s.state.CompressorPowerW > 0 {
					cv.SubDetail = "Kompressor: " + formatW(s.state.CompressorPowerW)
				} else {
					cv.SubDetail = "Kompressor: Standby"
				}
			case engine.ConsumerWW:
				if s.state.WWTopTempC > 0 {
					cv.SubDetail = fmt.Sprintf("Speicher: %.1f°C", s.state.WWTopTempC)
				}
			}
			// ReadinessHint: shown when consumer is inactive and not overridden
			if !rec.active && !rec.manualOverride {
				cv.ReadinessHint = s.buildReadinessHint(c, s.state.BatterySOC, s.state.PVProductionW, forecastKWh)
			}
			if c == engine.ConsumerWW && !s.wwConfigured {
				cv.Unconfigured = true
			}
			data.Consumers = append(data.Consumers, cv)
		}
		s.mu.RUnlock()

		// Trip mode view (read outside store lock — tripMgr has its own lock)
		data.CarOptions = s.carOptions
		if s.tripMgr != nil {
			data.Trip = buildTripView(s.tripMgr, now)
		}

		w.Header().Set("Content-Type", "text/html; charset=utf-8")
		if err := tmpl.Execute(w, data); err != nil {
			http.Error(w, "template error", http.StatusInternalServerError)
		}
	}
}

// buildReadinessHint returns a short string explaining why a consumer is currently inactive.
// Returns empty string when the consumer is not forecast/threshold driven.
func (s *Store) buildReadinessHint(c engine.Consumer, soc, pvW, forecastKWh float64) string {
	cc := s.carCharging
	switch c {
	case engine.ConsumerWallboxA, engine.ConsumerWallboxB:
		if cc.PVThresholdAW == 0 && cc.PVThresholdBW == 0 {
			return "" // proactive not configured
		}
		midKWh := s.strategic.ForecastMidKWh
		if forecastKWh == 0 {
			return "Keine Prognose verfügbar"
		}
		if forecastKWh < midKWh {
			return fmt.Sprintf("Prognose zu gering (%.0f kWh)", forecastKWh)
		}
		if float64(cc.MinSOC) > 0 && soc < float64(cc.MinSOC) {
			return fmt.Sprintf("SOC zu niedrig (min. %d%%)", cc.MinSOC)
		}
		threshold := cc.PVThresholdAW
		if c == engine.ConsumerWallboxB {
			threshold = cc.PVThresholdBW
		}
		if pvW < threshold {
			return fmt.Sprintf("Warte auf PV ≥ %.0f W (aktuell %.0f W)", threshold, pvW)
		}
		return "Bereit — aktiviert bei nächstem Zyklus"
	case engine.ConsumerWW:
		if s.strategic.ForecastMidKWh > 0 && forecastKWh < s.strategic.ForecastMidKWh {
			return fmt.Sprintf("Prognose zu gering (%.0f kWh)", forecastKWh)
		}
	}
	return ""
}

// buildTripView constructs the trip card data for the current cycle.
func buildTripView(tm *trip.Manager, now time.Time) tripView {
	goal := tm.ActiveGoal()
	if goal == nil {
		return tripView{}
	}

	// Use rated wallbox power as fallback (learned rate improves over sessions)
	// The actual rated power isn't available here, so use battery capacity / 10 as rough estimate.
	// The real rate is computed in runCycle; here we just format what's stored.
	rateKW := goal.BatteryKWh / 20.0 // conservative placeholder for display only
	startTime := goal.StartTime(rateKW)
	duration := goal.ChargeDuration(rateKW)

	wbLabel := "Wallbox A"
	if goal.Wallbox == "wallbox_b" {
		wbLabel = "Wallbox B"
	}

	tv := tripView{
		Active:       true,
		CarName:      goal.CarName,
		WallboxLabel: wbLabel,
		CurrentSOC:   goal.CurrentSOC,
		EnergyKWh:    goal.EnergyNeededKWh(),
		DeadlineStr:  formatDay(goal.Deadline, now),
		DurationStr:  formatDur(duration),
		IsTight:      goal.IsTight(now, rateKW),
	}

	if !goal.ChargingStartedAt.IsZero() {
		tv.ChargingStarted = true
		tv.ChargingSince = formatDur(now.Sub(goal.ChargingStartedAt))
	} else if goal.ShouldStartNow(now, rateKW) {
		tv.StartsAtStr = "jetzt"
	} else {
		tv.StartsAtStr = formatDay(startTime, now)
	}

	return tv
}

func formatDay(t, now time.Time) string {
	today := now.Format("2006-01-02")
	tomorrow := now.AddDate(0, 0, 1).Format("2006-01-02")
	switch t.Format("2006-01-02") {
	case today:
		return "heute " + t.Format("15:04")
	case tomorrow:
		return "morgen " + t.Format("15:04")
	default:
		return t.Format("02.01. 15:04")
	}
}

func formatDur(d time.Duration) string {
	d = d.Round(time.Minute)
	h := int(d.Hours())
	m := int(d.Minutes()) % 60
	if h == 0 {
		return fmt.Sprintf("%d min", m)
	}
	if m == 0 {
		return fmt.Sprintf("%d h", h)
	}
	return fmt.Sprintf("%d h %d min", h, m)
}

func abs(v float64) float64 {
	if v < 0 {
		return -v
	}
	return v
}

func formatW(w float64) string {
	if w >= 1000 || w <= -1000 {
		return fmt.Sprintf("%.1f kW", w/1000)
	}
	return fmt.Sprintf("%.0f W", w)
}

const htmlTemplate = `<!DOCTYPE html>
<html lang="de">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="refresh" content="30">
<title>Solar Status</title>
<style>
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: #f0fdf4;
  color: #1a1a1a;
  min-height: 100vh;
  padding: 1.25rem 1rem 2rem;
  max-width: 480px;
  margin: 0 auto;
}

header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 1.25rem;
}
h1 { font-size: 1.4rem; font-weight: 700; color: #14532d; }
.updated { font-size: 0.75rem; color: #6b7280; }

.banner {
  border-radius: 10px;
  padding: 0.6rem 0.9rem;
  font-size: 0.85rem;
  margin-bottom: 1rem;
}
.banner.warn    { background: #fef9c3; color: #854d0e; border: 1px solid #fde68a; }
.banner.error   { background: #fee2e2; color: #991b1b; border: 1px solid #fca5a5; }
.banner.monitor {
  background: #fff7ed; color: #9a3412; border: 1px solid #fed7aa;
  display: flex; align-items: center; justify-content: space-between; gap: 0.75rem;
}
.resume-btn {
  background: #fff; border: 1px solid #9a3412; color: #9a3412;
  border-radius: 7px; padding: 0.25rem 0.7rem; font-size: 0.8rem;
  font-weight: 700; cursor: pointer; white-space: nowrap; flex-shrink: 0;
}
.resume-btn:active { opacity: 0.7; }
.monitor-toggle-btn {
  background: none; border: 1px solid #d1d5db; color: #9ca3af;
  border-radius: 8px; padding: 0.25rem 0.75rem; font-size: 0.72rem;
  cursor: pointer; flex-shrink: 0;
}
.monitor-toggle-btn:hover { border-color: #9ca3af; color: #6b7280; }

/* Trip mode card */
.trip-card {
  background: #f0fdf4; border: 1px solid #86efac;
  border-radius: 14px; padding: 0.85rem 1rem; margin-bottom: 1.25rem;
}
.trip-card.tight { background: #fff7ed; border-color: #fed7aa; }
.trip-header {
  display: flex; justify-content: space-between; align-items: center;
  margin-bottom: 0.5rem;
}
.trip-title { font-size: 0.78rem; font-weight: 700; color: #15803d; text-transform: uppercase; letter-spacing: 0.05em; }
.trip-card.tight .trip-title { color: #9a3412; }
.trip-cancel { background: none; border: 1px solid #d1d5db; color: #9ca3af; border-radius: 7px; padding: 0.2rem 0.55rem; font-size: 0.75rem; cursor: pointer; }
.trip-cancel:hover { border-color: #9ca3af; color: #6b7280; }
.trip-car { font-weight: 600; font-size: 0.9rem; margin-bottom: 0.2rem; }
.trip-detail { font-size: 0.78rem; color: #6b7280; }
.trip-timing { font-size: 0.85rem; font-weight: 600; color: #15803d; margin-top: 0.35rem; }
.trip-card.tight .trip-timing { color: #9a3412; }
.trip-deadline { font-size: 0.78rem; color: #6b7280; margin-top: 0.1rem; }

/* Trip form */
.trip-form-card {
  background: #fff; border-radius: 14px; padding: 0.85rem 1rem;
  box-shadow: 0 1px 4px rgba(0,0,0,0.07); margin-top: 1.25rem;
}
.trip-form { display: flex; flex-direction: column; gap: 0.6rem; margin-top: 0.5rem; }
.trip-row { display: flex; gap: 0.5rem; align-items: center; flex-wrap: wrap; }
.trip-select, .trip-number, .trip-datetime {
  border: 1px solid #d1d5db; border-radius: 8px; padding: 0.35rem 0.5rem;
  font-size: 0.82rem; background: #f9fafb; color: #374151;
}
.trip-select { flex: 1; min-width: 0; }
.trip-number { width: 4.5rem; }
.trip-datetime { flex: 1; min-width: 0; }
.trip-label { font-size: 0.75rem; color: #6b7280; white-space: nowrap; }
.trip-submit {
  background: #16a34a; color: #fff; border: none; border-radius: 8px;
  padding: 0.45rem 1.2rem; font-size: 0.85rem; font-weight: 700; cursor: pointer; align-self: flex-end;
}
.trip-submit:active { opacity: 0.8; }

.grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem;
  margin-bottom: 1.25rem;
}

.card {
  background: #ffffff;
  border-radius: 14px;
  padding: 1rem;
  box-shadow: 0 1px 4px rgba(0,0,0,0.07);
}
.card-label {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: #9ca3af;
  margin-bottom: 0.4rem;
}
.card-value {
  font-size: 1.8rem;
  font-weight: 700;
  line-height: 1;
}
.card-sub {
  font-size: 0.78rem;
  color: #6b7280;
  margin-top: 0.3rem;
}

/* SOC bar */
.soc-bar {
  background: #e5e7eb;
  border-radius: 999px;
  height: 8px;
  margin-top: 0.6rem;
  overflow: hidden;
}
.soc-fill {
  height: 100%;
  border-radius: 999px;
  transition: width 0.4s ease;
}

/* Forecast card — full width */
.card.full { grid-column: 1 / -1; }
.forecast-row {
  display: flex;
  align-items: baseline;
  gap: 0.5rem;
}
.forecast-icon { font-size: 1.4rem; line-height: 1; }
.forecast-quality { font-size: 0.85rem; color: #6b7280; margin-top: 0.2rem; }

/* Grid card direction arrow */
.arrow { font-size: 1.1rem; margin-right: 0.1rem; }

/* Phase grid */
.phase-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.5rem;
  margin-top: 0.75rem;
}
.phase-item {
  text-align: center;
}
.phase-label {
  font-size: 0.65rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: #9ca3af;
}
.phase-value {
  font-size: 0.9rem;
  font-weight: 700;
  margin-top: 0.1rem;
}

/* Live power badge on consumers */
.power-badge {
  font-size: 0.72rem;
  font-weight: 600;
  background: #f0fdf4;
  color: #15803d;
  border: 1px solid #bbf7d0;
  border-radius: 6px;
  padding: 0.15rem 0.45rem;
  flex-shrink: 0;
  margin-right: 0.25rem;
}

/* Priority badge */
.prio-badge {
  font-size: 0.75rem;
  color: #9ca3af;
  margin-right: 0.35rem;
  font-variant-numeric: tabular-nums;
}

/* Consumer list */
.section-title {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: #9ca3af;
  margin-bottom: 0.6rem;
}

.consumer {
  background: #ffffff;
  border-radius: 14px;
  padding: 0.85rem 1rem;
  box-shadow: 0 1px 4px rgba(0,0,0,0.07);
  display: flex;
  align-items: center;
  gap: 0.85rem;
  margin-bottom: 0.6rem;
}
.consumer:last-child { margin-bottom: 0; }
.consumer.unconfigured { opacity: 0.45; }

.indicator {
  width: 13px;
  height: 13px;
  border-radius: 50%;
  flex-shrink: 0;
}
.indicator.on {
  background: #22c55e;
  box-shadow: 0 0 0 3px #bbf7d0;
}
.indicator.off { background: #d1d5db; }
.indicator.override {
  background: #f59e0b;
  box-shadow: 0 0 0 3px #fde68a;
}

.consumer-icon { font-size: 1.2rem; flex-shrink: 0; }
.consumer-body { flex: 1; min-width: 0; }
.consumer-name { font-weight: 600; font-size: 0.9rem; }
.consumer-detail {
  font-size: 0.78rem;
  color: #6b7280;
  margin-top: 0.15rem;
}
.consumer-detail.active { color: #16a34a; font-weight: 500; }
.consumer-detail.override { color: #d97706; font-weight: 500; }
.consumer-sub {
  font-size: 0.72rem;
  color: #9ca3af;
  margin-top: 0.1rem;
}
.consumer-hint {
  font-size: 0.72rem;
  color: #6b7280;
  margin-top: 0.1rem;
  font-style: italic;
}

.dur-select {
  border: 1px solid #d1d5db;
  border-radius: 8px;
  padding: 0.3rem 0.4rem;
  font-size: 0.75rem;
  background: #f9fafb;
  color: #374151;
  cursor: pointer;
  flex-shrink: 0;
}

.override-btn {
  border: none;
  border-radius: 8px;
  padding: 0.35rem 0.75rem;
  font-size: 0.78rem;
  font-weight: 600;
  cursor: pointer;
  flex-shrink: 0;
  transition: opacity 0.15s;
}
.override-btn:active { opacity: 0.7; }
.override-btn.turn-on  { background: #dcfce7; color: #15803d; }
.override-btn.turn-off { background: #fee2e2; color: #b91c1c; }
</style>
</head>
<body>

<header>
  <h1>☀️ Solar Status</h1>
  <div style="display:flex;align-items:center;gap:0.6rem">
    {{if not .LastUpdate.IsZero}}
    <span class="updated">{{.LastUpdate.Format "15:04:05"}}</span>
    {{end}}
    {{if not .MonitorOnly}}
    <form method="post" action="/monitor">
      <input type="hidden" name="csrf_token" value="{{.CSRFToken}}">
      <button type="submit" class="monitor-toggle-btn">⏸ Monitor</button>
    </form>
    {{end}}
    {{if .HasAuth}}
    <a href="/logout" style="font-size:.8rem;color:#94a3b8;text-decoration:none;padding:.3rem .6rem;border:1px solid #e2e8f0;border-radius:.4rem">Abmelden</a>
    {{end}}
  </div>
</header>

{{if .MonitorOnly}}
<div class="banner monitor">
  <span>⏸ Monitor-Only — Keine Schaltvorgänge</span>
  <form method="post" action="/monitor">
    <input type="hidden" name="csrf_token" value="{{.CSRFToken}}">
    <button type="submit" class="resume-btn">▶ Automatik</button>
  </form>
</div>
{{else if .DryRun}}
<div class="banner warn">⚠️ Testmodus — keine echten Schaltvorgänge</div>
{{end}}
{{if .ErrMsg}}
<div class="banner error">⚠️ {{.ErrMsg}}</div>
{{end}}

<div class="grid">

  <!-- Battery -->
  <div class="card">
    <div class="card-label">Batterie</div>
    <div class="card-value" style="color: {{socColor .BatterySOC}}">
      {{printf "%.0f" .BatterySOC}}<span style="font-size:1rem;font-weight:400"> %</span>
    </div>
    <div class="soc-bar">
      <div class="soc-fill" style="width:{{printf "%.0f" .BatterySOC}}%; background:{{socColor .BatterySOC}}"></div>
    </div>
  </div>

  <!-- Grid -->
  <div class="card">
    <div class="card-label">Netz</div>
    {{if .IsExporting}}
    <div class="card-value" style="color:#16a34a">
      <span class="arrow">↑</span>{{formatW .AbsGridW}}
    </div>
    <div class="card-sub">Einspeisung</div>
    {{else}}
    <div class="card-value" style="color:#dc2626">
      <span class="arrow">↓</span>{{formatW .AbsGridW}}
    </div>
    <div class="card-sub">Bezug</div>
    {{end}}
  </div>

  <!-- PV -->
  <div class="card">
    <div class="card-label">PV-Leistung</div>
    <div class="card-value" style="color:#d97706">{{formatW .PVProductionW}}</div>
    {{if gt .PVYieldTodayKWh 0.0}}<div class="card-sub">Heute: {{printf "%.1f" .PVYieldTodayKWh}} kWh</div>{{end}}
  </div>

  <!-- Temperature -->
  <div class="card">
    <div class="card-label">Außentemperatur</div>
    <div class="card-value">{{printf "%.1f" .AmbientTempC}}<span style="font-size:1rem;font-weight:400"> °C</span></div>
  </div>

  <!-- Phase power (full width, only if data available) -->
  {{if .HasPhaseData}}
  <div class="card full">
    <div class="card-label">Phasen (Netz)</div>
    <div class="phase-grid">
      {{range .Phases}}
      <div class="phase-item">
        <div class="phase-label">{{.Label}}</div>
        <div class="phase-value" style="color:{{if .IsExport}}#16a34a{{else}}#dc2626{{end}}">
          {{if .IsExport}}↑{{else}}↓{{end}}{{formatW .AbsPowerW}}
        </div>
      </div>
      {{end}}
    </div>
  </div>
  {{end}}

  <!-- Forecast (full width) -->
  {{if .Forecast.Available}}
  <div class="card full">
    <div class="card-label">Prognose heute</div>
    <div class="forecast-row">
      <span class="forecast-icon">{{.Forecast.Icon}}</span>
      <span class="card-value" style="color:#d97706">{{printf "%.1f" .Forecast.KWh}} kWh</span>
      {{if gt .PVYieldTodayKWh 0.0}}<span class="card-sub" style="margin-left:1rem">Ist: {{printf "%.1f" .PVYieldTodayKWh}} kWh</span>{{end}}
    </div>
    <div class="forecast-quality">{{.Forecast.Quality}}</div>
  </div>
  {{end}}

</div>

<div class="section-title">Verbraucher &mdash; Priorität ↓</div>

{{range .Consumers}}
<div class="consumer{{if .Unconfigured}} unconfigured{{end}}">
  <div class="indicator {{if .ManualOverride}}override{{else if .Active}}on{{else}}off{{end}}"></div>
  <div class="consumer-icon">{{.Icon}}</div>
  <div class="consumer-body">
    <div class="consumer-name">
      <span class="prio-badge">{{.Priority}}</span>{{.Label}}
    </div>
    <div class="consumer-detail{{if and .Active (not .ManualOverride)}} active{{end}}{{if .ManualOverride}} override{{end}}">
      {{if .Unconfigured}}
        nicht konfiguriert
      {{else if .ManualOverride}}
        Manuell bis {{.OverrideUntil.Format "15:04"}}
      {{else if .Active}}
        {{formatSince .Since}}{{if .Reason}} — {{.Reason}}{{end}}
      {{else}}
        Ausgeschaltet
      {{end}}
    </div>
    {{if .SubDetail}}<div class="consumer-sub">{{.SubDetail}}</div>{{end}}
    {{if and (not .Active) (not .ManualOverride) .ReadinessHint}}
    <div class="consumer-hint">{{.ReadinessHint}}</div>
    {{end}}
  </div>
  {{if and .Active .LivePowerW}}
  <span class="power-badge">{{formatW .LivePowerW}}</span>
  {{end}}
  {{if .CanOverride}}
  <form method="post" action="/override" style="display:flex;align-items:center;gap:0.4rem;flex-shrink:0">
    <input type="hidden" name="csrf_token" value="{{$.CSRFToken}}">
    <input type="hidden" name="consumer" value="{{.ConsumerKey}}">
    {{if .Active}}
    <input type="hidden" name="state" value="off">
    <input type="hidden" name="duration" value="1h">
    <button type="submit" class="override-btn turn-off">Aus</button>
    {{else}}
    <input type="hidden" name="state" value="on">
    <select name="duration" class="dur-select">
      <option value="30m">30 min</option>
      <option value="1h" selected>1 Std</option>
      <option value="2h">2 Std</option>
      <option value="4h">4 Std</option>
    </select>
    <button type="submit" class="override-btn turn-on">Ein</button>
    {{end}}
  </form>
  {{end}}
  {{if .IsWW}}
  <div style="display:flex;flex-direction:column;gap:0.3rem;flex-shrink:0">
    {{if not .Unconfigured}}
    <form method="post" action="/ww/reset">
      <input type="hidden" name="csrf_token" value="{{$.CSRFToken}}">
      <button type="submit" class="override-btn turn-off" style="width:100%" title="WW-Solltemperatur auf Basiswert zurücksetzen, Boost für heute sperren">🌡️ Zurücksetzen</button>
    </form>
    {{end}}
    <form method="post" action="/ww/boost">
      <input type="hidden" name="csrf_token" value="{{$.CSRFToken}}">
      {{if .WWBoostDisabled}}
      <button type="submit" class="override-btn turn-on" style="width:100%" title="WW Boost durch PV-Überschuss wieder erlauben">✅ Boost ein</button>
      {{else}}
      <button type="submit" class="override-btn turn-off" style="width:100%" title="WW Boost dauerhaft deaktivieren (z.B. im Sommer)">⛔ Boost aus</button>
      {{end}}
    </form>
  </div>
  {{end}}
</div>
{{end}}

{{if .Trip.Active}}
<div class="trip-card{{if .Trip.IsTight}} tight{{end}}">
  <div class="trip-header">
    <span class="trip-title">🚗 Fahrt geplant</span>
    <form method="post" action="/trip/cancel">
      <input type="hidden" name="csrf_token" value="{{.CSRFToken}}">
      <button type="submit" class="trip-cancel">Abbrechen</button>
    </form>
  </div>
  <div class="trip-car">{{.Trip.CarName}} · {{.Trip.WallboxLabel}}</div>
  <div class="trip-detail">Ladebedarf: {{printf "%.1f" .Trip.EnergyKWh}} kWh &nbsp;({{printf "%.0f" .Trip.CurrentSOC}}% → 100%) · ca. {{.Trip.DurationStr}}</div>
  {{if .Trip.ChargingStarted}}
  <div class="trip-timing">⚡ Lädt seit {{.Trip.ChargingSince}}</div>
  {{else if .Trip.IsTight}}
  <div class="trip-timing">⚠ Zeitfenster knapp — sofort einstecken!</div>
  {{else}}
  <div class="trip-timing">Laden startet: {{.Trip.StartsAtStr}}</div>
  {{end}}
  <div class="trip-deadline">Bereit bis: {{.Trip.DeadlineStr}}</div>
</div>
{{else if .CarOptions}}
<div class="trip-form-card">
  <div class="section-title">🚗 Fahrtziel planen</div>
  <form method="post" action="/trip" class="trip-form">
    <input type="hidden" name="csrf_token" value="{{.CSRFToken}}">
    <div class="trip-row">
      <select name="wallbox" class="trip-select">
        <option value="wallbox_a">Wallbox A</option>
        <option value="wallbox_b">Wallbox B</option>
      </select>
      <select name="car" class="trip-select">
        {{range .CarOptions}}
        <option value="{{.Key}}">{{.Name}} ({{.BatteryKWh}} kWh)</option>
        {{end}}
      </select>
    </div>
    <div class="trip-row">
      <span class="trip-label">Ladestand jetzt</span>
      <input type="number" name="current_soc" min="1" max="99" value="50" class="trip-number"> %
    </div>
    <div class="trip-row">
      <span class="trip-label">Bereit bis</span>
      <input type="datetime-local" name="deadline" class="trip-datetime" required>
    </div>
    <button type="submit" class="trip-submit">Planen</button>
  </form>
</div>
{{end}}

</body>
</html>`