'use client'

import { useEffect, useState } from 'react'
import { Badge } from '@/components/ui/badge'
import { BarChart } from '@/components/ui/bar-chart'
import { Alert, AlertDescription, AlertTitle } from '@/components/ui/alert'
import { LineChart } from '@/components/ui/line-chart'
import { Panel, PanelContent, PanelHeader, PanelTitle } from '@/components/ui/panel'
import { ProgressRing } from '@/components/ui/progress-ring'
import { StatCard } from '@/components/ui/stat-card'
import { StatusGrid, type SystemEntry } from '@/components/ui/status-grid'
import { Tabs, TabsContent, TabsList, TabsTrigger } from '@/components/ui/tabs'
import { Terminal, type TerminalLine } from '@/components/ui/terminal'

// Interface base: layout + visual treatment rebuilt from the scificn-ui Mission Control
// showcase (src/app/_pages/showcase/mission-control-content.tsx in baxy5/scificn-ui), with
// placeholder SpaceWanderer content — no game logic yet. Single player, no auth, by design.

function useNarrow(threshold = 900): boolean {
  const [narrow, setNarrow] = useState(
    () => typeof window !== 'undefined' && window.innerWidth < threshold
  )
  useEffect(() => {
    const handle = () => setNarrow(window.innerWidth < threshold)
    window.addEventListener('resize', handle, { passive: true })
    return () => window.removeEventListener('resize', handle)
  }, [threshold])
  return narrow
}

function now(): string {
  return new Date().toLocaleTimeString('en-GB', { hour12: false })
}

// ── Placeholder content (no game logic — real values land with the turn engine) ──

const shipSystems: SystemEntry[] = [
  { name: 'REACTOR', status: 'ACTIVE', detail: '94.2%' },
  { name: 'LIFE SUPPORT', status: 'ACTIVE' },
  { name: 'NAV COMPUTER', status: 'SCANNING' },
  { name: 'WEAPONS', status: 'OFFLINE' },
  { name: 'COMMS', status: 'ACTIVE' },
]

const bayOutput = [
  { label: 'PWR', value: 14 },
  { label: 'NAV', value: 9 },
  { label: 'COM', value: 6 },
  { label: 'WPN', value: 3 },
  { label: 'LSS', value: 12 },
  { label: 'ENG', value: 11 },
  { label: 'BAY', value: 7 },
  { label: 'MED', value: 5 },
]

const hullTrack = [100, 98, 97, 96, 94, 95, 92, 90, 89, 87]
const hullLabels = hullTrack.map((_, i) => `T-${hullTrack.length - 1 - i}`)

const encounters = [
  { name: 'DERELICT FREIGHTER', when: 'T-07:14', id: '#E-102' },
  { name: 'PIRATE SKIRMISH', when: 'T-22:40', id: '#E-103' },
  { name: 'ANOMALY FIELD', when: 'T-48:12', id: '#E-104' },
]

const shipData = [
  { label: 'TOTAL MODULES', value: '34' },
  { label: 'HULL INTEGRITY', value: '87%' },
  { label: 'REACTOR OUTPUT', value: '94.2%' },
  { label: 'CREW ACTIVE', value: '3 / 6' },
  { label: 'SECTOR', value: '7G // DRIFT LANE' },
  { label: 'DRIFT VELOCITY', value: '0.4 KM/S' },
  { label: 'TURN', value: '12' },
]

const logLines: TerminalLine[] = [
  { type: 'system', text: 'SPACEWANDERER // INITIALIZING SHIP SYSTEMS...', timestamp: now() },
  { type: 'output', text: 'HULL SCAN COMPLETE — INTEGRITY 87%', timestamp: now() },
  { type: 'output', text: 'REACTOR OUTPUT STABLE AT 94.2%', timestamp: now() },
  { type: 'output', text: 'CREW MANIFEST LOADED — 3 ACTIVE PERSONNEL', timestamp: now() },
  { type: 'warn', text: 'WEAPONS OFFLINE — MODULE NOT INSTALLED', timestamp: now() },
  { type: 'system', text: 'ALL SYSTEMS NOMINAL. AWAITING FIRST TURN.', timestamp: now() },
]

export function MissionControl() {
  const narrow = useNarrow()
  const [tick, setTick] = useState(0)

  useEffect(() => {
    const id = setInterval(() => setTick((t) => t + 1), 1000)
    return () => clearInterval(id)
  }, [])

  const timeStr = new Date().toLocaleTimeString('en-GB', { hour12: false })

  return (
    <div
      style={{
        minHeight: '100vh',
        background: 'var(--background)',
        display: 'flex',
        flexDirection: 'column',
        fontFamily: 'var(--font-mono)',
      }}
    >
      {/* ── HEADER ── */}
      <header
        style={{
          height: '44px',
          background: 'var(--surface)',
          borderBottom: '1px solid var(--border)',
          display: 'flex',
          alignItems: 'center',
          padding: '0 1.25rem',
          gap: '0.75rem',
          position: 'sticky',
          top: 0,
          zIndex: 50,
          flexShrink: 0,
        }}
      >
        <span
          style={{
            color: 'var(--text-muted)',
            fontSize: '0.7rem',
            letterSpacing: '0.08em',
            flexShrink: 0,
          }}
        >
          ◄ SHIP
        </span>

        <span style={{ color: 'var(--border)', flexShrink: 0 }}>│</span>

        <h1
          style={{
            margin: 0,
            color: 'var(--color-green)',
            fontSize: '0.85rem',
            fontWeight: 700,
            letterSpacing: '0.12em',
            textShadow: 'var(--text-glow-green)',
            flexShrink: 0,
          }}
        >
          SPACEWANDERER
        </h1>

        {!narrow && (
          <span
            style={{
              color: 'var(--text-muted)',
              fontSize: '0.72rem',
              letterSpacing: '0.08em',
              flexShrink: 0,
            }}
          >
            // SHIP STATUS // CREW MANIFEST
          </span>
        )}

        <div style={{ flex: 1 }} />

        {!narrow && (
          <Badge variant="ACTIVE">SHIP NOMINAL</Badge>
        )}

        <Badge variant="SCANNING">SECTOR SCAN</Badge>

        <span
          style={{
            color: 'var(--color-green)',
            fontSize: '0.65rem',
            letterSpacing: '0.1em',
            textShadow: 'var(--text-glow-green)',
            flexShrink: 0,
            opacity: tick % 2 === 0 ? 1 : 0.5,
            transition: 'opacity 0.3s',
          }}
        >
          {timeStr}
        </span>
      </header>

      {/* ── BODY ── */}
      <div
        style={{
          flex: 1,
          display: 'flex',
          flexDirection: 'column',
          gap: '1px',
          background: 'var(--border)',
        }}
      >
        {/* STAT CARDS — placeholder ship readouts */}
        <div
          style={{
            background: 'var(--background)',
            padding: '0.75rem 1rem',
            display: 'grid',
            gridTemplateColumns: narrow ? '1fr 1fr' : 'repeat(4, 1fr)',
            gap: '0.75rem',
          }}
        >
          <StatCard
            label="HULL INTEGRITY"
            value="87%"
            sublabel="NOMINAL · NO BREACHES"
            variant="ACTIVE"
          />
          <StatCard
            label="REACTOR OUTPUT"
            value="94.2%"
            sublabel="STABLE · IDLE CYCLE"
            variant="ACTIVE"
          />
          <StatCard
            label="CREW ON BOARD"
            value="3 / 6"
            sublabel="AWAITING MANIFEST"
            variant="DEFAULT"
          />
          <StatCard
            label="NEXT ENCOUNTER"
            value="T-07:14"
            sublabel="SECTOR 7G // DRIFT LANE"
            variant="WARNING"
          />
        </div>

        {/* 3-COLUMN GRID */}
        <div
          style={{
            flex: 1,
            display: 'grid',
            gridTemplateColumns: narrow ? '1fr' : '260px 1fr 240px',
            gap: '1px',
            background: 'var(--border)',
          }}
        >
          {/* ── LEFT: SHIP SYSTEMS + VESSEL METRICS ── */}
          <div
            style={{
              background: 'var(--background)',
              padding: '1rem',
              display: 'flex',
              flexDirection: 'column',
              gap: '0.875rem',
              overflowY: 'auto',
            }}
          >
            <Panel notch="sm">
              <PanelHeader>
                <PanelTitle>SHIP SYSTEMS</PanelTitle>
                <div style={{ marginLeft: 'auto' }}>
                  <Badge variant="ACTIVE">4 ONLINE</Badge>
                </div>
              </PanelHeader>

              <StatusGrid systems={shipSystems} />
            </Panel>

            <Panel notch="sm">
              <PanelHeader>
                <PanelTitle>VESSEL METRICS</PanelTitle>
              </PanelHeader>
              <PanelContent>
                <div
                  style={{
                    display: 'flex',
                    justifyContent: 'space-around',
                    paddingTop: '0.5rem',
                    paddingBottom: '0.25rem',
                  }}
                >
                  <ProgressRing value={87} label="HULL" variant="ACTIVE" size={74} />
                  <ProgressRing value={94} label="REACTOR" variant="ACTIVE" size={74} />
                  <ProgressRing value={50} label="CREW / 6" variant="WARNING" size={74} />
                </div>

                <div
                  style={{
                    marginTop: '0.75rem',
                    paddingTop: '0.75rem',
                    borderTop: '1px solid var(--border)',
                    display: 'grid',
                    gridTemplateColumns: '1fr 1fr 1fr',
                    gap: '0.25rem',
                    textAlign: 'center',
                  }}
                >
                  {[
                    { label: 'HULL INTEGRITY', note: 'last scan T-02' },
                    { label: 'REACTOR OUTPUT', note: 'idle cycle' },
                    { label: 'CREW ROSTER', note: 'of 6 berths' },
                  ].map((item) => (
                    <div key={item.label}>
                      <div
                        style={{
                          fontSize: '0.52rem',
                          color: 'var(--text-muted)',
                          letterSpacing: '0.08em',
                          textTransform: 'uppercase',
                        }}
                      >
                        {item.label}
                      </div>
                      <div
                        style={{
                          fontSize: '0.48rem',
                          color: 'var(--border)',
                          letterSpacing: '0.06em',
                          marginTop: '1px',
                        }}
                      >
                        {item.note}
                      </div>
                    </div>
                  ))}
                </div>
              </PanelContent>
            </Panel>
          </div>

          {/* ── CENTER: OPERATIONS TABS ── */}
          <div
            style={{
              background: 'var(--background)',
              padding: '1rem',
              display: 'flex',
              flexDirection: 'column',
              gap: '0.875rem',
              overflowY: 'auto',
            }}
          >
            <Panel notch="md" style={{ flex: 1 }}>
              <PanelHeader>
                <PanelTitle>OPERATIONS // SHIP COMMAND</PanelTitle>
                <div style={{ marginLeft: 'auto', display: 'flex', gap: '0.5rem' }}>
                  <Badge variant="ACTIVE">SYS NOMINAL</Badge>
                </div>
              </PanelHeader>

              <PanelContent style={{ padding: 0 }}>
                <Tabs defaultValue="systems">
                  <TabsList
                    style={{ padding: '0 1rem', background: 'var(--surface-raised)' }}
                  >
                    <TabsTrigger value="systems">SYSTEMS</TabsTrigger>
                    <TabsTrigger value="next">NEXT MISSION</TabsTrigger>
                    <TabsTrigger value="log">LOG</TabsTrigger>
                    <TabsTrigger value="hull">HULL TRACK</TabsTrigger>
                  </TabsList>

                  {/* SYSTEMS TAB */}
                  <TabsContent value="systems" style={{ margin: 0, padding: '1rem' }}>
                    <BarChart
                      data={bayOutput}
                      orientation="vertical"
                      variant="ACTIVE"
                      title="MODULE OUTPUT BY BAY (PLACEHOLDER)"
                      style={{ width: '100%' }}
                    />
                    <div
                      style={{
                        marginTop: '1rem',
                        display: 'grid',
                        gridTemplateColumns: 'repeat(3, 1fr)',
                        gap: '0.625rem',
                      }}
                    >
                      {[
                        { label: 'TOTAL MODULES', value: 34 },
                        { label: 'ONLINE', value: 29 },
                        { label: 'EFFICIENCY', value: '85%' },
                      ].map((s) => (
                        <div
                          key={s.label}
                          style={{
                            padding: '0.75rem',
                            background: 'var(--surface)',
                            border: '1px solid var(--border)',
                            textAlign: 'center',
                          }}
                        >
                          <div
                            style={{
                              fontSize: '0.55rem',
                              color: 'var(--text-muted)',
                              letterSpacing: '0.12em',
                              marginBottom: '0.4rem',
                            }}
                          >
                            {s.label}
                          </div>
                          <div
                            style={{
                              fontSize: '1.1rem',
                              fontWeight: 700,
                              color: 'var(--color-green)',
                              textShadow: 'var(--text-glow-green)',
                              letterSpacing: '0.02em',
                            }}
                          >
                            {s.value}
                          </div>
                        </div>
                      ))}
                    </div>
                  </TabsContent>

                  {/* NEXT MISSION TAB */}
                  <TabsContent value="next" style={{ margin: 0, padding: '1rem' }}>
                    <div
                      style={{ display: 'flex', flexDirection: 'column', gap: '0.75rem' }}
                    >
                      <Alert variant="STATUS">
                        <AlertTitle>ENCOUNTER #E-102 — DERELICT FREIGHTER</AlertTitle>
                        <AlertDescription>
                          Placeholder briefing. Real encounter resolution lands with the turn engine.
                        </AlertDescription>
                      </Alert>

                      <div
                        style={{
                          display: 'grid',
                          gridTemplateColumns: narrow ? '1fr' : '1fr 1fr',
                          gap: '0.625rem',
                        }}
                      >
                        {[
                          { label: 'DESTINATION', value: 'SECTOR 7G // DRIFT LANE' },
                          { label: 'ETA', value: 'T-07:14 (PLACEHOLDER)' },
                          { label: 'THREAT LEVEL', value: 'LOW — UNMANNED' },
                          { label: 'CARGO MANIFEST', value: 'UNKNOWN' },
                        ].map((item) => (
                          <div
                            key={item.label}
                            style={{
                              padding: '0.75rem',
                              background: 'var(--surface)',
                              border: '1px solid var(--border)',
                            }}
                          >
                            <div
                              style={{
                                fontSize: '0.55rem',
                                color: 'var(--text-muted)',
                                letterSpacing: '0.12em',
                                marginBottom: '0.35rem',
                              }}
                            >
                              {item.label}
                            </div>
                            <div
                              style={{
                                fontSize: '0.8rem',
                                color: 'var(--text-secondary)',
                                letterSpacing: '0.04em',
                              }}
                            >
                              {item.value}
                            </div>
                          </div>
                        ))}
                      </div>
                    </div>
                  </TabsContent>

                  {/* LOG TAB */}
                  <TabsContent value="log" style={{ margin: 0, padding: '1rem' }}>
                    <Terminal
                      lines={logLines}
                      title="SHIP LOG // PLACEHOLDER FEED"
                      height="22rem"
                      style={{ width: '100%' }}
                    />
                  </TabsContent>

                  {/* HULL TRACK TAB */}
                  <TabsContent value="hull" style={{ margin: 0, padding: '1rem' }}>
                    <LineChart
                      series={[{ id: 'hull', label: 'HULL INTEGRITY %', data: hullTrack }]}
                      labels={hullLabels}
                      title="HULL INTEGRITY TRACK // PLACEHOLDER"
                      showArea
                      animated={false}
                      style={{ width: '100%' }}
                    />
                  </TabsContent>
                </Tabs>
              </PanelContent>
            </Panel>
          </div>

          {/* ── RIGHT: UPCOMING ENCOUNTERS + SHIP DATA ── */}
          <div
            style={{
              background: 'var(--background)',
              padding: '1rem',
              display: 'flex',
              flexDirection: 'column',
              gap: '0.875rem',
              overflowY: 'auto',
            }}
          >
            <Panel notch="sm">
              <PanelHeader>
                <PanelTitle>UPCOMING ENCOUNTERS</PanelTitle>
                <div style={{ marginLeft: 'auto' }}>
                  <Badge variant="SCANNING">{encounters.length} QUEUED</Badge>
                </div>
              </PanelHeader>
              <PanelContent style={{ padding: 0 }}>
                <div style={{ display: 'flex', flexDirection: 'column' }}>
                  {encounters.map((enc, i) => {
                    const isNext = i === 0
                    const isLast = i === encounters.length - 1
                    return (
                      <div
                        key={enc.id}
                        style={{
                          padding: '0.6rem 0.75rem',
                          borderBottom: isLast ? 'none' : '1px solid var(--border)',
                          background: isNext ? 'var(--surface-raised)' : 'transparent',
                        }}
                      >
                        <div
                          style={{
                            display: 'flex',
                            justifyContent: 'space-between',
                            alignItems: 'flex-start',
                            gap: '0.5rem',
                          }}
                        >
                          <div style={{ overflow: 'hidden', flex: 1 }}>
                            <div
                              style={{
                                fontSize: '0.68rem',
                                color: isNext ? 'var(--text-secondary)' : 'var(--text-muted)',
                                letterSpacing: '0.04em',
                                overflow: 'hidden',
                                textOverflow: 'ellipsis',
                                whiteSpace: 'nowrap',
                                textTransform: 'uppercase',
                              }}
                            >
                              {enc.name}
                            </div>
                            <div
                              style={{
                                fontSize: '0.57rem',
                                color: 'var(--text-muted)',
                                letterSpacing: '0.06em',
                                marginTop: '2px',
                              }}
                            >
                              {enc.when} // {enc.id}
                            </div>
                          </div>
                          <Badge variant={isNext ? 'WARNING' : 'SCANNING'}>
                            {isNext ? 'NEXT' : 'SCHED'}
                          </Badge>
                        </div>
                      </div>
                    )
                  })}
                </div>
              </PanelContent>
            </Panel>

            <Panel notch="sm">
              <PanelHeader>
                <PanelTitle>SHIP DATA</PanelTitle>
              </PanelHeader>
              <PanelContent>
                <div style={{ display: 'flex', flexDirection: 'column' }}>
                  {shipData.map((item, i) => (
                    <div
                      key={item.label}
                      style={{
                        display: 'flex',
                        justifyContent: 'space-between',
                        alignItems: 'center',
                        padding: '0.4rem 0',
                        borderBottom:
                          i < shipData.length - 1 ? '1px solid var(--border)' : 'none',
                      }}
                    >
                      <span
                        style={{
                          fontSize: '0.6rem',
                          color: 'var(--text-muted)',
                          letterSpacing: '0.1em',
                        }}
                      >
                        {item.label}
                      </span>
                      <span
                        style={{
                          fontSize: '0.78rem',
                          color: 'var(--color-green)',
                          textShadow: 'var(--text-glow-green)',
                          letterSpacing: '0.04em',
                          fontWeight: 600,
                        }}
                      >
                        {item.value}
                      </span>
                    </div>
                  ))}
                </div>
              </PanelContent>
            </Panel>
          </div>
        </div>
      </div>

      {/* ── FOOTER ── */}
      <footer
        style={{
          minHeight: '44px',
          background: 'var(--surface)',
          borderTop: '1px solid var(--border)',
          display: 'flex',
          alignItems: 'center',
          flexWrap: 'wrap',
          padding: '0.5rem 1.25rem',
          gap: '0.5rem',
          position: 'sticky',
          bottom: 0,
          zIndex: 50,
          flexShrink: 0,
        }}
      >
        <span style={{ fontSize: '0.6rem', color: 'var(--text-muted)', letterSpacing: '0.08em' }}>
          INTERFACE BASE: SCIFICN MISSION CONTROL
        </span>
        <span style={{ color: 'var(--border)' }}>│</span>
        <span style={{ fontSize: '0.6rem', color: 'var(--text-muted)', letterSpacing: '0.08em' }}>
          CONTENT: PLACEHOLDER — NO GAME LOGIC YET
        </span>
        <span style={{ color: 'var(--border)' }}>│</span>
        <span style={{ fontSize: '0.6rem', color: 'var(--text-muted)', letterSpacing: '0.08em' }}>
          SINGLE PLAYER // NO AUTH
        </span>

        <div style={{ flex: 1 }} />

        <Badge variant="ACTIVE">SYS ONLINE</Badge>
      </footer>
    </div>
  )
}