'use client'

import React, { useRef, useState, useTransition } from 'react'
import { useRouter } from 'next/navigation'

import { createPastor, updatePastor, uploadLetter } from './actions'

export type PastorRow = {
  id: number
  name: string
  email: string | null
  telephone: string[]
  city: string | null
  state: string | null
  country: string | null
  countryName: string | null
  countryFlag: string
  inTelegram: boolean
  notes: string | null
  letterUrl: string | null
  letterName: string | null
}

export function PastorsTable({ rows }: { rows: PastorRow[] }) {
  const [editing, setEditing] = useState<PastorRow | null>(null)
  const [uploading, setUploading] = useState<PastorRow | null>(null)
  const [creating, setCreating] = useState(false)

  return (
    <>
      <div className="flex justify-end mb-4">
        <button type="button" className="btn btn-primary btn-sm" onClick={() => setCreating(true)}>
          + Crear pastor
        </button>
      </div>

      {rows.length === 0 ? (
        <div className="card bg-base-100 shadow-sm">
          <div className="card-body items-center text-center">
            <h3 className="card-title">No se encontraron pastores</h3>
            <p className="text-base-content/60">Intenta con otro término de búsqueda.</p>
          </div>
        </div>
      ) : (
        <div className="overflow-x-auto rounded-box border border-base-300 bg-base-100">
        <table className="table table-zebra table-pin-rows">
          <thead>
            <tr>
              <th>Nombre</th>
              <th>Correo</th>
              <th>Teléfonos</th>
              <th>Ciudad</th>
              <th>País</th>
              <th className="text-center">Telegram</th>
              <th>Carta</th>
              <th className="text-right">Acciones</th>
            </tr>
          </thead>
          <tbody>
            {rows.map((p) => (
              <tr key={p.id}>
                <td className="font-medium whitespace-nowrap">{p.name}</td>
                <td>
                  {p.email ? (
                    <a href={`mailto:${p.email}`} className="link link-hover">
                      {p.email}
                    </a>
                  ) : (
                    <span className="opacity-40">—</span>
                  )}
                </td>
                <td>
                  {p.telephone.length ? (
                    <div className="flex flex-col gap-0.5">
                      {p.telephone.map((t, i) => (
                        <a key={i} href={`tel:${t}`} className="link link-hover whitespace-nowrap">
                          {t}
                        </a>
                      ))}
                    </div>
                  ) : (
                    <span className="opacity-40">—</span>
                  )}
                </td>
                <td className="whitespace-nowrap">{p.city || <span className="opacity-40">—</span>}</td>
                <td className="whitespace-nowrap">
                  {p.countryName ? (
                    <span>
                      {p.countryFlag} {p.countryName}
                    </span>
                  ) : (
                    <span className="opacity-40">—</span>
                  )}
                </td>
                <td className="text-center">
                  {p.inTelegram ? (
                    <span className="badge badge-success badge-sm">Sí</span>
                  ) : (
                    <span className="badge badge-ghost badge-sm">No</span>
                  )}
                </td>
                <td>
                  {p.letterUrl ? (
                    <a
                      href={p.letterUrl}
                      target="_blank"
                      rel="noopener noreferrer"
                      download={p.letterName ?? undefined}
                      className="btn btn-xs btn-outline btn-success"
                    >
                      Descargar
                    </a>
                  ) : (
                    <button
                      type="button"
                      className="btn btn-xs btn-outline"
                      onClick={() => setUploading(p)}
                    >
                      Subir
                    </button>
                  )}
                </td>
                <td className="text-right">
                  <button
                    type="button"
                    className="btn btn-xs btn-ghost"
                    onClick={() => setEditing(p)}
                  >
                    Editar
                  </button>
                </td>
              </tr>
            ))}
          </tbody>
        </table>
        </div>
      )}

      {creating && <PastorModal key="create" pastor={null} onClose={() => setCreating(false)} />}
      {editing && (
        <PastorModal key={`edit-${editing.id}`} pastor={editing} onClose={() => setEditing(null)} />
      )}
      {uploading && (
        <UploadModal
          key={`upload-${uploading.id}`}
          pastor={uploading}
          onClose={() => setUploading(null)}
        />
      )}
    </>
  )
}

function PastorModal({ pastor, onClose }: { pastor: PastorRow | null; onClose: () => void }) {
  const router = useRouter()
  const isCreate = pastor === null
  const [pending, startTransition] = useTransition()
  const [error, setError] = useState<string | null>(null)

  const [name, setName] = useState(pastor?.name ?? '')
  const [email, setEmail] = useState(pastor?.email ?? '')
  const [phones, setPhones] = useState<string[]>(
    pastor?.telephone.length ? pastor.telephone : [''],
  )
  const [city, setCity] = useState(pastor?.city ?? '')
  const [state, setState] = useState(pastor?.state ?? '')
  const [country, setCountry] = useState(pastor?.country ?? '')
  const [inTelegram, setInTelegram] = useState(pastor?.inTelegram ?? false)
  const [notes, setNotes] = useState(pastor?.notes ?? '')

  const setPhone = (i: number, v: string) =>
    setPhones((prev) => prev.map((p, idx) => (idx === i ? v : p)))
  const addPhone = () => setPhones((prev) => [...prev, ''])
  const removePhone = (i: number) => setPhones((prev) => prev.filter((_, idx) => idx !== i))

  const onSubmit = (e: React.FormEvent) => {
    e.preventDefault()
    setError(null)
    startTransition(async () => {
      const input = { name, email, telephone: phones, city, state, country, inTelegram, notes }
      const res = isCreate ? await createPastor(input) : await updatePastor(pastor.id, input)
      if (res?.ok) {
        router.refresh()
        onClose()
      } else {
        setError(
          ('error' in res && res.error) ||
            (isCreate ? 'No se pudo crear el pastor.' : 'No se pudieron guardar los cambios.'),
        )
      }
    })
  }

  return (
    <dialog className="modal modal-open">
      <div className="modal-box max-w-xl">
        <h3 className="text-lg font-bold pb-3 mb-5 border-b border-base-300">
          {isCreate ? 'Crear pastor' : 'Editar pastor'}
        </h3>
        <form
          onSubmit={onSubmit}
          className="grid grid-cols-1 sm:grid-cols-[7.5rem_1fr] sm:items-center gap-x-4 gap-y-4"
        >
          <label htmlFor="f-name" className="text-sm font-medium sm:text-right sm:pr-1">
            Nombre
          </label>
          <input
            id="f-name"
            className="input input-bordered w-full"
            value={name}
            placeholder="Nombre completo"
            onChange={(e) => setName(e.target.value)}
            required
          />

          <label htmlFor="f-email" className="text-sm font-medium sm:text-right sm:pr-1">
            Correo
          </label>
          <input
            id="f-email"
            type="email"
            className="input input-bordered w-full"
            value={email}
            placeholder="correo@ejemplo.com"
            onChange={(e) => setEmail(e.target.value)}
          />

          <span className="text-sm font-medium sm:text-right sm:pr-1 sm:self-start sm:pt-3">
            Teléfonos
          </span>
          <div className="flex flex-col gap-2">
            {phones.map((p, i) => (
              <div key={i} className="join w-full">
                <input
                  className="input input-bordered join-item w-full"
                  value={p}
                  placeholder="+1 555 123 4567"
                  onChange={(e) => setPhone(i, e.target.value)}
                />
                <button
                  type="button"
                  className="btn btn-outline join-item"
                  onClick={() => removePhone(i)}
                  aria-label="Eliminar número"
                >
                  ✕
                </button>
              </div>
            ))}
            <button type="button" className="btn btn-sm btn-ghost self-start" onClick={addPhone}>
              + Agregar número
            </button>
          </div>

          <label htmlFor="f-city" className="text-sm font-medium sm:text-right sm:pr-1">
            Ciudad
          </label>
          <input
            id="f-city"
            className="input input-bordered w-full"
            value={city}
            onChange={(e) => setCity(e.target.value)}
          />

          <label htmlFor="f-state" className="text-sm font-medium sm:text-right sm:pr-1">
            Estado
          </label>
          <input
            id="f-state"
            className="input input-bordered w-full"
            value={state}
            onChange={(e) => setState(e.target.value)}
          />

          <label htmlFor="f-country" className="text-sm font-medium sm:text-right sm:pr-1">
            País
          </label>
          <div className="flex items-center gap-2">
            <input
              id="f-country"
              className="input input-bordered w-24 uppercase"
              value={country}
              maxLength={2}
              placeholder="MX"
              onChange={(e) => setCountry(e.target.value)}
            />
            <span className="text-xs text-base-content/50">Código ISO de 2 letras</span>
          </div>

          <span className="text-sm font-medium sm:text-right sm:pr-1">En Telegram</span>
          <input
            type="checkbox"
            className="toggle toggle-success"
            checked={inTelegram}
            onChange={(e) => setInTelegram(e.target.checked)}
          />

          <label htmlFor="f-notes" className="text-sm font-medium sm:text-right sm:pr-1 sm:self-start sm:pt-3">
            Notas
          </label>
          <textarea
            id="f-notes"
            className="textarea textarea-bordered w-full"
            rows={2}
            value={notes}
            onChange={(e) => setNotes(e.target.value)}
          />

          {error && (
            <div role="alert" className="alert alert-error alert-soft sm:col-span-2 py-2">
              <span className="text-sm">{error}</span>
            </div>
          )}

          <div className="modal-action sm:col-span-2 mt-2">
            <button type="button" className="btn btn-ghost" onClick={onClose} disabled={pending}>
              Cancelar
            </button>
            <button type="submit" className="btn btn-primary" disabled={pending}>
              {pending && <span className="loading loading-spinner loading-sm" />}
              {isCreate ? 'Crear' : 'Guardar'}
            </button>
          </div>
        </form>
      </div>
      <button type="button" className="modal-backdrop" onClick={onClose} aria-label="Cerrar" />
    </dialog>
  )
}

function UploadModal({ pastor, onClose }: { pastor: PastorRow; onClose: () => void }) {
  const router = useRouter()
  const formRef = useRef<HTMLFormElement>(null)
  const [pending, startTransition] = useTransition()
  const [error, setError] = useState<string | null>(null)

  const onSubmit = (e: React.FormEvent) => {
    e.preventDefault()
    setError(null)
    const formData = new FormData(formRef.current!)
    startTransition(async () => {
      const res = await uploadLetter(pastor.id, formData)
      if (res?.ok) {
        router.refresh()
        onClose()
      } else {
        setError(res?.error ?? 'Error al subir el archivo.')
      }
    })
  }

  return (
    <dialog className="modal modal-open">
      <div className="modal-box">
        <h3 className="text-lg font-bold">Subir carta</h3>
        <p className="text-sm text-base-content/60 mt-1 mb-4">
          Adjunta una carta para <span className="font-medium">{pastor.name}</span>. Solo PDF o Word.
        </p>
        <form ref={formRef} onSubmit={onSubmit} className="flex flex-col gap-4">
          <input
            type="file"
            name="file"
            accept=".pdf,.doc,.docx,application/pdf,application/msword,application/vnd.openxmlformats-officedocument.wordprocessingml.document"
            className="file-input file-input-bordered w-full"
            required
          />
          {error && <p className="text-error text-sm">{error}</p>}
          <div className="modal-action">
            <button type="button" className="btn btn-ghost" onClick={onClose} disabled={pending}>
              Cancelar
            </button>
            <button type="submit" className="btn btn-primary" disabled={pending}>
              {pending && <span className="loading loading-spinner loading-sm" />}
              Subir
            </button>
          </div>
        </form>
      </div>
      <button type="button" className="modal-backdrop" onClick={onClose} aria-label="Cerrar" />
    </dialog>
  )
}