import { useState } from 'react'
import { CheckCircle2, ArrowUpRight, Pause, X, FileText } from 'lucide-react'
import { EscalateModal } from './EscalateModal'
import { StatusUpdateModal } from './StatusUpdateModal'
import type {
  ResolveSessionRequest,
  EscalateSessionRequest,
  SessionDocumentation,
  StatusUpdateAudience,
  StatusUpdateLength,
  StatusUpdateContext,
  StatusUpdateResponse,
} from '@/types/ai-session'

interface FlowPilotActionBarProps {
  canResolve: boolean
  canEscalate: boolean
  isProcessing: boolean
  hasPsaTicket?: boolean
  sessionId?: string
  canShareUpdate?: boolean
  onResolve: (data: ResolveSessionRequest) => Promise<SessionDocumentation>
  onEscalate: (data: EscalateSessionRequest) => Promise<SessionDocumentation>
  onPause?: () => Promise<void>
  onAbandon?: () => Promise<void>
  onGenerateStatusUpdate?: (audience: StatusUpdateAudience, length: StatusUpdateLength, context: StatusUpdateContext) => Promise<StatusUpdateResponse>
}

export function FlowPilotActionBar({
  canResolve,
  canEscalate,
  isProcessing,
  hasPsaTicket = false,
  sessionId,
  canShareUpdate = false,
  onResolve,
  onEscalate,
  onPause,
  onAbandon,
  onGenerateStatusUpdate,
}: FlowPilotActionBarProps) {
  const [showResolve, setShowResolve] = useState(false)
  const [showEscalate, setShowEscalate] = useState(false)
  const [showAbandon, setShowAbandon] = useState(false)
  const [showStatusUpdate, setShowStatusUpdate] = useState(false)
  const [resolutionSummary, setResolutionSummary] = useState('')
  const [submitting, setSubmitting] = useState(false)

  const handleResolve = async () => {
    if (!resolutionSummary.trim() || resolutionSummary.length < 5) return
    setSubmitting(true)
    try {
      await onResolve({ resolution_summary: resolutionSummary })
      setShowResolve(false)
    } finally {
      setSubmitting(false)
    }
  }

  const handlePause = async () => {
    if (onPause) {
      setSubmitting(true)
      try {
        await onPause()
      } finally {
        setSubmitting(false)
      }
    }
  }

  const handleAbandon = async () => {
    if (onAbandon) {
      setSubmitting(true)
      try {
        await onAbandon()
        setShowAbandon(false)
      } finally {
        setSubmitting(false)
      }
    }
  }

  return (
    <>
      {/* Bottom bar — fixed to viewport bottom, single row on all screen sizes */}
      <div
        className="fixed bottom-0 right-0 z-40 flex items-center gap-1.5 sm:gap-3 border-t border-border bg-card px-2 sm:px-5 py-2 sm:py-3"
        style={{ left: 'var(--sidebar-w, 0px)' }}
      >
        {/* Primary actions */}
        <button
          onClick={() => { setShowResolve(true); setShowEscalate(false) }}
          disabled={!canResolve || isProcessing}
          className="flex items-center justify-center gap-1.5 rounded-lg bg-success-dim border border-success/20 px-2.5 sm:px-4 py-2 min-h-[40px] sm:min-h-[44px] text-xs sm:text-sm font-medium text-success hover:bg-success/20 disabled:opacity-40 disabled:pointer-events-none transition-colors"
        >
          <CheckCircle2 size={15} />
          Resolve
        </button>
        <button
          onClick={() => setShowEscalate(true)}
          disabled={!canEscalate || isProcessing}
          className="flex items-center justify-center gap-1.5 rounded-lg bg-warning-dim border border-warning/20 px-2.5 sm:px-4 py-2 min-h-[40px] sm:min-h-[44px] text-xs sm:text-sm font-medium text-warning hover:bg-warning/20 disabled:opacity-40 disabled:pointer-events-none transition-colors"
        >
          <ArrowUpRight size={15} />
          Escalate
        </button>
        {canShareUpdate && onGenerateStatusUpdate && (
          <button
            onClick={() => setShowStatusUpdate(true)}
            disabled={isProcessing}
            className="flex items-center justify-center gap-1.5 rounded-lg bg-accent-dim border border-accent/20 px-2.5 sm:px-4 py-2 min-h-[40px] sm:min-h-[44px] text-xs sm:text-sm font-medium text-accent hover:bg-accent/20 disabled:opacity-40 disabled:pointer-events-none transition-colors"
            title="Share Update"
          >
            <FileText size={15} />
            <span className="hidden sm:inline">Share Update</span>
          </button>
        )}

        {/* Spacer */}
        <div className="flex-1" />

        {/* Secondary actions — right side */}
        {onPause && (
          <button
            onClick={handlePause}
            disabled={isProcessing || submitting}
            className="flex items-center justify-center gap-1.5 rounded-lg bg-[rgba(255,255,255,0.04)] border border-[rgba(255,255,255,0.06)] px-2.5 sm:px-4 py-2 min-h-[40px] sm:min-h-[44px] text-xs sm:text-sm font-medium text-muted-foreground hover:text-foreground hover:border-[rgba(255,255,255,0.12)] disabled:opacity-40 disabled:pointer-events-none transition-colors"
          >
            <Pause size={15} />
            <span className="hidden sm:inline">Pause</span>
          </button>
        )}
        {onAbandon && (
          <button
            onClick={() => setShowAbandon(true)}
            disabled={isProcessing || submitting}
            className="flex items-center justify-center gap-1.5 rounded-lg bg-[rgba(255,255,255,0.04)] border border-[rgba(255,255,255,0.06)] px-2.5 sm:px-4 py-2 min-h-[40px] sm:min-h-[44px] text-xs sm:text-sm font-medium text-muted-foreground hover:text-foreground hover:border-[rgba(255,255,255,0.12)] disabled:opacity-40 disabled:pointer-events-none transition-colors"
          >
            <X size={15} />
            <span className="hidden sm:inline">Close</span>
          </button>
        )}
      </div>

      {/* Resolve modal */}
      {showResolve && (
        <div className="fixed inset-0 z-50 flex items-end sm:items-center justify-center bg-black/60 backdrop-blur-sm">
          <div className="card-flat w-full max-w-full sm:max-w-lg mx-0 sm:mx-4 p-4 sm:p-6 rounded-t-2xl sm:rounded-2xl">
            <h3 className="font-heading text-lg font-semibold text-foreground mb-1">Resolve Session</h3>
            <p className="text-sm text-muted-foreground mb-4">Summarize what fixed the issue. This will be included in the auto-generated documentation.</p>
            <textarea
              value={resolutionSummary}
              onChange={(e) => setResolutionSummary(e.target.value)}
              placeholder="What resolved the issue?"
              className="w-full rounded-lg border border-border bg-card px-3 py-2 text-sm text-foreground placeholder:text-muted-foreground focus:border-[rgba(96,165,250,0.3)] focus:outline-none resize-none"
              rows={4}
              autoFocus
            />
            <div className="mt-4 flex flex-col-reverse gap-2 sm:flex-row sm:justify-end">
              <button
                onClick={() => setShowResolve(false)}
                className="rounded-lg px-4 py-2 min-h-[44px] text-sm text-muted-foreground hover:text-foreground transition-colors"
              >
                Cancel
              </button>
              <button
                onClick={handleResolve}
                disabled={resolutionSummary.length < 5 || submitting}
                className="rounded-lg bg-success/20 border border-success/30 px-4 py-2 min-h-[44px] text-sm font-medium text-success hover:bg-success/30 disabled:opacity-50 transition-colors"
              >
                {submitting ? 'Resolving...' : 'Resolve Session'}
              </button>
            </div>
          </div>
        </div>
      )}

      {/* Close/Abandon confirmation */}
      {showAbandon && (
        <div className="fixed inset-0 z-50 flex items-end sm:items-center justify-center bg-black/60 backdrop-blur-sm">
          <div className="card-flat w-full max-w-full sm:max-w-lg mx-0 sm:mx-4 p-4 sm:p-6 rounded-t-2xl sm:rounded-2xl">
            <h3 className="font-heading text-lg font-semibold text-foreground mb-1">Close Session</h3>
            <p className="text-sm text-muted-foreground mb-4">
              Are you sure you want to close this session? The session history will be kept but it won't count as resolved.
            </p>
            <div className="flex flex-col-reverse gap-2 sm:flex-row sm:justify-end">
              <button
                onClick={() => setShowAbandon(false)}
                className="rounded-lg px-4 py-2 min-h-[44px] text-sm text-muted-foreground hover:text-foreground transition-colors"
              >
                Cancel
              </button>
              <button
                onClick={handleAbandon}
                disabled={submitting}
                className="rounded-lg bg-danger/20 border border-danger/30 px-4 py-2 min-h-[44px] text-sm font-medium text-danger hover:bg-danger/30 disabled:opacity-50 transition-colors"
              >
                {submitting ? 'Closing...' : 'Close Session'}
              </button>
            </div>
          </div>
        </div>
      )}

      {/* Escalate modal */}
      <EscalateModal
        open={showEscalate}
        onClose={() => setShowEscalate(false)}
        onEscalate={onEscalate}
        isProcessing={isProcessing || submitting}
        hasPsaTicket={hasPsaTicket}
        sessionId={sessionId}
      />

      {/* Status Update modal */}
      {onGenerateStatusUpdate && (
        <StatusUpdateModal
          open={showStatusUpdate}
          onClose={() => setShowStatusUpdate(false)}
          onGenerate={onGenerateStatusUpdate}
          context="status"
          hasPsaTicket={hasPsaTicket}
        />
      )}
    </>
  )
}