"use client"
import { formatMoney } from "@conusai-kit/i18n/values"
import { Money } from "@conusai-kit/money"
import type { ProjectSlugs } from "@conusai-kit/ui"
import { useDataClient, useWrite } from "@conusai-kit/ui/data"
// SPDX-License-Identifier: LicenseRef-ConusAI-Template-1.0
import {
  CheckField,
  FormLayout,
  type FormValues,
  PageSection,
  ResourceList,
  SelectField,
  TextField,
  usePageNavigation,
  useResourceList,
} from "@conusai-kit/ui/patterns"
import { Button } from "@conusai-kit/ui/primitives"
import { useRef, useState } from "react"
import type { InvoiceView, SeriesView } from "../contract/index.js"
import { DraftFields } from "./fields.js"
import { draftData } from "./form-data.js"
import { describeFailure, type Labels } from "./labels.js"

// A lost response retries the same input/key. Editing terms starts a different operation.
function useSubmissionId() {
  const current = useRef<{ value: string; key: string } | null>(null)
  return (input: unknown) => {
    const value = JSON.stringify(input)
    if (current.current?.value !== value) current.current = { value, key: crypto.randomUUID() }
    return current.current.key
  }
}
export function Invoices({
  slugs,
  seed,
  href,
  labels,
}: {
  slugs: ProjectSlugs
  seed: { rows: InvoiceView[]; after?: string | undefined }
  href: string
  labels: Labels
}) {
  const client = useDataClient()
  const { list } = useResourceList<InvoiceView>({
    seed,
    rowId: (row) => row.invoiceId,
    read: async ({ after }) =>
      (
        await client.call<{ rows: InvoiceView[]; after?: string }>("invoicing.invoice.list", {
          org: slugs.org,
          ...(after ? { after } : {}),
        })
      ).value,
  })
  return (
    <ResourceList
      {...list}
      label={labels.title}
      columns={[
        { id: "number", header: labels.number, cell: (row) => row.number ?? labels.draft },
        { id: "status", header: labels.status, cell: (row) => labels[row.status] },
        { id: "payable", header: labels.payable, cell: (row) => formatMoney(Money.parse(row.payable), labels.locale) },
      ]}
      rowHref={(row) => `${href}/${row.invoiceId}`}
      rowLabel={(row) => row.number ?? labels.draft}
      empty={{ title: labels.empty }}
    />
  )
}
export function InvoiceForm({
  slugs,
  invoice,
  series,
  labels,
  href,
}: {
  slugs: ProjectSlugs
  invoice?: InvoiceView
  series: SeriesView[]
  labels: Labels
  href: string
}) {
  const navigation = usePageNavigation()
  const [count, setCount] = useState(invoice?.data.lines.length ?? 1)
  const key = useSubmissionId()
  const write = useWrite<Record<string, unknown>, InvoiceView>(
    invoice ? "invoicing.invoice.update" : "invoicing.invoice.draft",
  )
  const submit = async (values: FormValues) => {
    const data = draftData(values, count, labels.locale, invoice?.data)
    const input = {
      org: slugs.org,
      data,
      ...(invoice ? { invoiceId: invoice.invoiceId, expectedVersion: invoice.revision } : {}),
    }
    const saved = await write.mutate({ ...input, requestId: key(input) })
    navigation.navigate(`${href}/${saved.invoiceId}`)
  }
  if (!series.some((row) => row.active && row.kind === (invoice?.data.type_code === "381" ? "credit_note" : "invoice")))
    return <p>{labels.missingSeries}</p>
  return (
    <PageSection title={invoice ? labels.save : labels.create} variant="card">
      <FormLayout
        describeError={(error) => describeFailure(error, labels)}
        submitLabel={invoice ? labels.save : labels.create}
        busyLabel={labels.busy}
        onSubmit={submit}
      >
        <DraftFields labels={labels} {...(invoice ? { data: invoice.data } : {})} series={series} count={count} />
        <Button type="button" onClick={() => setCount((old) => Math.min(old + 1, 200))}>
          {labels.addLine}
        </Button>
      </FormLayout>
    </PageSection>
  )
}
export function FiscalAction({
  slugs,
  invoice,
  operation,
  series,
  labels,
}: {
  slugs: ProjectSlugs
  invoice: InvoiceView
  operation: "issue" | "credit" | "void"
  series: SeriesView[]
  labels: Labels
}) {
  const navigation = usePageNavigation()
  const key = useSubmissionId()
  const action = useWrite<Record<string, unknown>, InvoiceView>(`invoicing.invoice.${operation}`)
  const submit = async (values: FormValues) => {
    const input = {
      org: slugs.org,
      invoiceId: invoice.invoiceId,
      expectedVersion: invoice.revision,
      confirmed: values.confirmed === "on",
      ...(operation === "credit" ? { seriesId: values.series } : {}),
      ...(operation !== "issue" ? { reason: values.reason } : {}),
    }
    const result = await action.mutate({ ...input, requestId: key(input) })
    if (operation === "credit")
      navigation.navigate(
        `/${slugs.org}/${slugs.workspace}/${slugs.project}/invoicing/${encodeURIComponent(result.invoiceId)}`,
      )
    else await navigation.refresh()
  }
  return (
    <PageSection title={labels[operation]}>
      <FormLayout
        describeError={(error) => describeFailure(error, labels)}
        submitLabel={labels[operation]}
        busyLabel={labels.busy}
        onSubmit={submit}
      >
        {operation === "credit" ? (
          <SelectField
            name="series"
            label={labels.series}
            required
            options={series
              .filter((row) => row.active && row.kind === "credit_note")
              .map((row) => ({ value: row.seriesId, label: row.code }))}
          />
        ) : null}
        {operation !== "issue" ? <TextField name="reason" label={labels.reason} required maxLength={500} /> : null}
        <CheckField name="confirmed" label={labels.confirm} required />
      </FormLayout>
    </PageSection>
  )
}
export function SeriesForm({ slugs, labels }: { slugs: ProjectSlugs; labels: Labels }) {
  const navigation = usePageNavigation()
  const key = useSubmissionId()
  const write = useWrite<Record<string, unknown>, SeriesView>("invoicing.series.create")
  const submit = async (values: FormValues) => {
    const input = { org: slugs.org, code: values.code, prefix: values.prefix, kind: values.kind }
    await write.mutate({ ...input, requestId: key(input) })
    await navigation.refresh()
  }
  return (
    <PageSection title={labels.createSeries}>
      <FormLayout
        describeError={(error) => describeFailure(error, labels)}
        submitLabel={labels.createSeries}
        busyLabel={labels.busy}
        onSubmit={submit}
      >
        <TextField name="code" label={labels.seriesCode} required maxLength={32} />
        <TextField name="prefix" label={labels.seriesPrefix} required maxLength={32} />
        <SelectField
          name="kind"
          label={labels.kind}
          required
          options={[
            { value: "invoice", label: labels.invoiceKind },
            { value: "credit_note", label: labels.creditKind },
          ]}
        />
      </FormLayout>
    </PageSection>
  )
}
export function UblDownload({ slugs, invoice, labels }: { slugs: ProjectSlugs; invoice: InvoiceView; labels: Labels }) {
  const client = useDataClient()
  const [problem, setProblem] = useState<string>()
  const download = async () => {
    try {
      const { value } = await client.call<{ xml: string; filename: string }>("invoicing.invoice.ubl", {
        org: slugs.org,
        invoiceId: invoice.invoiceId,
      })
      const url = URL.createObjectURL(new Blob([value.xml], { type: "application/xml" }))
      const link = document.createElement("a")
      link.href = url
      link.download = value.filename
      link.click()
      setTimeout(() => URL.revokeObjectURL(url), 1000)
      setProblem(undefined)
    } catch (error) {
      setProblem(describeFailure(error, labels))
    }
  }
  return (
    <>
      <Button
        type="button"
        onClick={() => {
          void download()
        }}
      >
        {labels.download}
      </Button>
      {problem ? <p role="alert">{problem}</p> : null}
    </>
  )
}