import { useState } from 'react'
import { useTimeout } from '../../utils/useTimeout'
import { Card, CardHeader, CardTitle, CardDescription, CardContent, CardFooter } from '../ui/Card'
import { Switch } from '../ui/Switch'
import { Badge } from '../ui/Badge'
import { Alert, AlertTitle, AlertDescription } from '../ui/Alert'
import { Tooltip } from '../ui/Tooltip'
import { Kbd } from '../ui/Kbd'
import { Icon } from '../Icon'

export function SettingsPanel() {
  const [apiKeyVisible, setApiKeyVisible] = useState(false)
  const [copied, setCopied] = useState(false)
  const [saved, setSaved] = useState(false)

  // Toggles
  const [canaryEnabled, setCanaryEnabled] = useState(true)
  const [telemetryEnabled, setTelemetryEnabled] = useState(true)
  const [autoRollback, setAutoRollback] = useState(false)

  const apiKey = 'nsk_live_98a72ef01bc34d89a2'
  const { schedule } = useTimeout()

  const copyKey = () => {
    navigator.clipboard?.writeText(apiKey)
    setCopied(true)
    schedule(() => setCopied(false), 2000)
  }

  const handleSave = () => {
    setSaved(true)
    schedule(() => setSaved(false), 2500)
  }

  return (
    <div className="stack-lg">
      <Card>
        <CardHeader>
          <div className="flex-between">
            <CardTitle>Environment &amp; Access Keys</CardTitle>
            <Badge variant="primary">Production</Badge>
          </div>
          <CardDescription>
            Manage authentication credentials and runtime ingress access.
          </CardDescription>
        </CardHeader>
        <CardContent>
          <div className="stack-md">
            <div>
              <label style={{ display: 'block', fontSize: 'var(--text-xs)', fontWeight: 600, marginBottom: 'var(--space-2)' }}>
                Production Secret API Key
              </label>
              <div className="row-xs" style={{ alignItems: 'center' }}>
                <div
                  style={{
                    flex: 1,
                    background: 'var(--secondary)',
                    border: '1px solid var(--border)',
                    borderRadius: 'var(--radius-md)',
                    padding: 'var(--space-2) var(--space-3)',
                    fontFamily: 'var(--font-mono)',
                    fontSize: 'var(--text-xs)',
                    color: 'var(--foreground)',
                    display: 'flex',
                    alignItems: 'center',
                    justifyContent: 'space-between',
                  }}
                >
                  <span>
                    {apiKeyVisible ? apiKey : '••••••••••••••••••••••••••••••••'}
                  </span>
                  <button
                    className="icon-button"
                    style={{ padding: 4 }}
                    onClick={() => setApiKeyVisible(!apiKeyVisible)}
                    aria-label={apiKeyVisible ? 'Hide API key' : 'Show API key'}
                  >
                    <Icon name={apiKeyVisible ? 'eye' : 'eye'} size={14} />
                  </button>
                </div>
                <Tooltip content="Copy key to clipboard">
                  <button className="button secondary" onClick={copyKey}>
                    <Icon name={copied ? 'check' : 'copy'} size={14} />
                    {copied ? 'Copied' : 'Copy'}
                  </button>
                </Tooltip>
              </div>
            </div>

            <Alert variant="info">
              <AlertTitle>Zero-Trust Rotation Enabled</AlertTitle>
              <AlertDescription>
                Keys are automatically renewed every 90 days. Next scheduled rotation in 14 days.
              </AlertDescription>
            </Alert>
          </div>
        </CardContent>
      </Card>

      <Card>
        <CardHeader>
          <CardTitle>Deployment &amp; Runtime Safeguards</CardTitle>
          <CardDescription>
            Fine-tune canary threshold tolerances and telemetry logging.
          </CardDescription>
        </CardHeader>
        <CardContent>
          <div className="stack-md">
            <div className="flex-between">
              <div>
                <div style={{ fontSize: 'var(--text-sm)', fontWeight: 600, color: 'var(--foreground)' }}>
                  Automated Canary Progression
                </div>
                <div style={{ fontSize: 'var(--text-xs)', color: 'var(--muted-foreground)', marginTop: 2 }}>
                  Gradually increase traffic from 5% to 100% based on error budget.
                </div>
              </div>
              <Switch checked={canaryEnabled} onCheckedChange={setCanaryEnabled} />
            </div>

            <div className="flex-between" style={{ paddingTop: 'var(--space-3)', borderTop: '1px solid var(--border)' }}>
              <div>
                <div style={{ fontSize: 'var(--text-sm)', fontWeight: 600, color: 'var(--foreground)' }}>
                  Detailed OpenTelemetry Tracing
                </div>
                <div style={{ fontSize: 'var(--text-xs)', color: 'var(--muted-foreground)', marginTop: 2 }}>
                  Emit span metrics for all inbound HTTP and gRPC remote procedure calls.
                </div>
              </div>
              <Switch checked={telemetryEnabled} onCheckedChange={setTelemetryEnabled} />
            </div>

            <div className="flex-between" style={{ paddingTop: 'var(--space-3)', borderTop: '1px solid var(--border)' }}>
              <div>
                <div style={{ fontSize: 'var(--text-sm)', fontWeight: 600, color: 'var(--foreground)' }}>
                  Immediate Circuit-Breaker Rollback
                </div>
                <div style={{ fontSize: 'var(--text-xs)', color: 'var(--muted-foreground)', marginTop: 2 }}>
                  Instantly revert to prior green build if P99 latency breaches 100ms.
                </div>
              </div>
              <Switch checked={autoRollback} onCheckedChange={setAutoRollback} />
            </div>
          </div>
        </CardContent>
        <CardFooter>
          <span style={{ fontSize: 'var(--text-3xs)', color: 'var(--muted-foreground)' }}>
            Shortcut: <Kbd>Ctrl</Kbd> + <Kbd>S</Kbd> to persist
          </span>
          <div className="row-xs" style={{ marginLeft: 'auto' }}>
            <button className="button ghost">Discard</button>
            <button className="button primary" onClick={handleSave}>
              <Icon name={saved ? 'check' : 'sparkles'} size={14} />
              {saved ? 'Saved Successfully' : 'Save Changes'}
            </button>
          </div>
        </CardFooter>
      </Card>
    </div>
  )
}