import { useState } from 'react'
import { Plus, Target } from 'lucide-react'
import { Link } from 'react-router-dom'

import { ToolHeader } from '../../components/ToolHeader'
import { Modal, Panel } from '../../components/ui'
import { slateBrand } from './brand'
import { useCreateTrackedOpportunity, useTrackedOpportunities } from './captureQueries'
import { fmtDeadline, inputCls, SOURCE_TYPES, STATUS_LABEL, STATUSES } from './captureConstants'

const FILTERS: [string, string][] = [['', 'All'], ...STATUSES.slice(0, 6)]

const chip = (on: boolean) =>
  `rounded-full px-3 py-1 text-xs font-semibold transition ${
    on
      ? 'bg-blue/25 text-blue shadow-[inset_0_0_0_1px_var(--color-blue)]'
      : 'bg-navy-900 text-faint hover:text-muted border border-line/60'
  }`

export function Capture() {
  const [status, setStatus] = useState('')
  const [open, setOpen] = useState(false)

  const list = useTrackedOpportunities({ status })
  const create = useCreateTrackedOpportunity()

  const [title, setTitle] = useState('')
  const [sourceType, setSourceType] = useState('manual')
  const [agency, setAgency] = useState('')
  const [solNumber, setSolNumber] = useState('')
  const [deadline, setDeadline] = useState('')
  const [primeOrSub, setPrimeOrSub] = useState('')
  const [newStatus, setNewStatus] = useState('identified')

  const submit = () => {
    create.mutate(
      {
        title,
        source_type: sourceType,
        agency_name: agency,
        solicitation_number: solNumber,
        response_deadline: deadline,
        prime_or_sub: primeOrSub,
        status: newStatus,
      },
      {
        onSuccess: () => {
          setTitle('')
          setSourceType('manual')
          setAgency('')
          setSolNumber('')
          setDeadline('')
          setPrimeOrSub('')
          setNewStatus('identified')
          setOpen(false)
        },
      },
    )
  }

  const rows = list.data ?? []

  return (
    <div className="space-y-4">
      <ToolHeader name={slateBrand.name} tagline="Opportunity capture" accent={slateBrand.accent}>
        <button
          onClick={() => setOpen(true)}
          className="flex items-center gap-1.5 rounded-lg bg-gradient-to-r from-blue to-navy-700 px-3 py-2 text-sm font-bold text-white hover:brightness-110"
        >
          <Plus size={15} />
          New opportunity
        </button>
      </ToolHeader>

      <div className="flex flex-wrap items-center gap-2">
        {FILTERS.map(([k, label]) => (
          <button key={k || 'all'} className={chip(status === k)} onClick={() => setStatus(k)}>
            {label}
          </button>
        ))}
      </div>

      <Panel>
        {list.isLoading ? (
          <p className="p-4 text-sm text-muted">Loading opportunities...</p>
        ) : rows.length === 0 ? (
          <div className="flex flex-col items-center gap-2 p-10 text-center">
            <Target size={28} className="text-faint" />
            <p className="text-sm text-muted">No tracked opportunities yet.</p>
            <p className="text-xs text-faint">Capture one from SAM.gov or enter it manually to begin the pursuit.</p>
          </div>
        ) : (
          <ul className="divide-y divide-line/50">
            {rows.map((o) => (
              <li key={o.id}>
                <Link
                  to={`/slate/capture/${o.id}`}
                  className="flex items-center gap-4 px-4 py-3 transition hover:bg-navy-900/60"
                >
                  <div className="min-w-0 flex-1">
                    <p className="truncate text-sm font-semibold text-ink">{o.title || 'Untitled opportunity'}</p>
                    <p className="truncate text-xs text-faint">
                      {[o.agency_name, o.solicitation_number].filter(Boolean).join(' · ') || 'No agency yet'}
                    </p>
                  </div>
                  <span className="rounded-full bg-navy-900 px-2.5 py-1 text-[11px] font-semibold text-muted">
                    {STATUS_LABEL[o.status] ?? o.status}
                  </span>
                  <span className="w-28 text-right text-xs text-faint">{fmtDeadline(o.response_deadline)}</span>
                </Link>
              </li>
            ))}
          </ul>
        )}
      </Panel>

      <Modal open={open} onClose={() => setOpen(false)} title="New opportunity">
        <div className="space-y-3">
          <label className="flex flex-col gap-1.5">
            <span className="text-[11px] font-bold uppercase tracking-wider text-muted">Title</span>
            <input
              value={title}
              onChange={(e) => setTitle(e.target.value)}
              placeholder="Data Engineering Support Services"
              className={inputCls}
            />
          </label>
          <div className="grid grid-cols-2 gap-3">
            <label className="flex flex-col gap-1.5">
              <span className="text-[11px] font-bold uppercase tracking-wider text-muted">Source</span>
              <select value={sourceType} onChange={(e) => setSourceType(e.target.value)} className={inputCls}>
                {SOURCE_TYPES.map(([k, v]) => (
                  <option key={k} value={k}>
                    {v}
                  </option>
                ))}
              </select>
            </label>
            <label className="flex flex-col gap-1.5">
              <span className="text-[11px] font-bold uppercase tracking-wider text-muted">Prime or sub</span>
              <select value={primeOrSub} onChange={(e) => setPrimeOrSub(e.target.value)} className={inputCls}>
                <option value="">Not set</option>
                <option value="prime">Prime</option>
                <option value="sub">Subcontract</option>
              </select>
            </label>
          </div>
          <label className="flex flex-col gap-1.5">
            <span className="text-[11px] font-bold uppercase tracking-wider text-muted">Agency or customer</span>
            <input
              value={agency}
              onChange={(e) => setAgency(e.target.value)}
              placeholder="Department of Veterans Affairs"
              className={inputCls}
            />
          </label>
          <div className="grid grid-cols-2 gap-3">
            <label className="flex flex-col gap-1.5">
              <span className="text-[11px] font-bold uppercase tracking-wider text-muted">Solicitation or reference</span>
              <input
                value={solNumber}
                onChange={(e) => setSolNumber(e.target.value)}
                placeholder="VA-26-00062403"
                className={inputCls}
              />
            </label>
            <label className="flex flex-col gap-1.5">
              <span className="text-[11px] font-bold uppercase tracking-wider text-muted">Response deadline</span>
              <input type="date" value={deadline} onChange={(e) => setDeadline(e.target.value)} className={inputCls} />
            </label>
          </div>
          <label className="flex flex-col gap-1.5">
            <span className="text-[11px] font-bold uppercase tracking-wider text-muted">Status</span>
            <select value={newStatus} onChange={(e) => setNewStatus(e.target.value)} className={inputCls}>
              {STATUSES.map(([k, v]) => (
                <option key={k} value={k}>
                  {v}
                </option>
              ))}
            </select>
          </label>
          <p className="text-[11px] text-faint">
            <Target size={11} className="mr-1 inline" />
            A manual opportunity supports every downstream step a SAM.gov one does.
          </p>
          {create.isError && <p className="text-xs text-risk">{(create.error as Error).message}</p>}
          <div className="flex justify-end gap-2 pt-1">
            <button
              onClick={() => setOpen(false)}
              className="rounded-lg border border-line/70 px-3 py-2 text-sm font-semibold text-muted hover:text-ink"
            >
              Cancel
            </button>
            <button
              onClick={submit}
              disabled={!title.trim() || create.isPending}
              className="rounded-lg bg-gradient-to-r from-blue to-navy-700 px-4 py-2 text-sm font-bold text-white hover:brightness-110 disabled:opacity-50"
            >
              Capture opportunity
            </button>
          </div>
        </div>
      </Modal>
    </div>
  )
}