/**
 * @copyright Sister Software
 * @license AGPL-3.0
 * @author Teffen Ellis, et al.
 *
 *   `state-ia-contractors`: Iowa Active Construction Contractor Registrations CSV consumer.
 *
 *   Iowa Workforce Development publishes a public registry of active construction contractors. Each
 *   row carries a business name, street address, city/state/zip, and contact info.
 *
 *   The adapter consumes the CSV the operator pre-downloads via `fetch-state-sources.ts`.
 *
 *   Output: one row per contractor with `venue` (business name) and address quad `(house_number,
 *   street, locality, region, postcode)`.
 *
 *   License: stamped `"Public Domain"` per Iowa state government open-data terms.
 */

import { formatAddressRow } from "@mailwoman/codex/address-format"
import { isPresent } from "@mailwoman/core/objects"
import { CSVSpliterator } from "spliterator"

import { splitStreetLine, stableSourceID } from "#adapters/utils"
import type { AdapterOptions, CanonicalRow, CorpusAdapter } from "#types"
import { lookupStateAbbreviation } from "#us/fips-state"

/**
 * Registry id for this adapter. Stamped into every row it emits, so a corpus record can be traced back to the dataset
 * it came from.
 */
export const STATE_IA_CONTRACTORS_ADAPTER_ID = "state-ia-contractors"
/**
 * License carried by this source (Public Domain), attached to each row so downstream consumers inherit the terms rather
 * than having to look them up.
 */
export const STATE_IA_CONTRACTORS_DEFAULT_LICENSE = "Public Domain"

interface IaContractorRow {
	"Registration #": string
	"Business Name": string
	"Address 1": string
	"Address 2": string
	City: string
	State: string
	"Zip Code": string
	"First Name": string
	"Last Name": string
}

export function createStateIaContractorsAdapter(): CorpusAdapter {
	return {
		id: STATE_IA_CONTRACTORS_ADAPTER_ID,
		defaultLicense: STATE_IA_CONTRACTORS_DEFAULT_LICENSE,
		description:
			"Iowa Active Construction Contractor Registrations — business name + full street address (public-domain).",

		async *rows(opts: AdapterOptions): AsyncIterable<CanonicalRow> {
			if (opts.country && opts.country !== "US") {
				throw new Error(`state-ia-contractors adapter: only US supported, got country=${opts.country}`)
			}

			const rows = CSVSpliterator.fromAsync(opts.inputPath, {
				normalizeKeys: false,
			})

			let emitted = 0

			for await (const record of rows as AsyncIterable<IaContractorRow>) {
				if (opts.signal?.aborted) break

				if (opts.limit !== undefined && emitted >= opts.limit) break

				const businessName = (record["Business Name"] ?? "").trim()
				const address1 = (record["Address 1"] ?? "").trim()
				const address2 = (record["Address 2"] ?? "").trim()
				const city = (record.City ?? "").trim()
				const stateAbbr = (record.State ?? "").trim()
				const zip = (record["Zip Code"] ?? "").trim()

				if (!city || !zip) continue

				const state = lookupStateAbbreviation(stateAbbr)

				if (!state) continue

				const fullAddress = [address1, address2].filter(isPresent).join(" ")
				const split = splitStreetLine(fullAddress)

				if (!split) continue

				const venue = businessName || undefined

				const components: CanonicalRow["components"] = {
					...(venue ? { venue } : {}),
					...(split.house_number ? { house_number: split.house_number } : {}),
					street: split.street,
					locality: city,
					region: state.abbreviation,
					postcode: zip,
				}

				const rendered = formatAddressRow(components, "US", { singleLine: true })

				if (!rendered) continue

				const { raw, components: aligned } = rendered

				if (Object.keys(aligned).length <= 2) continue

				const regNum = (record["Registration #"] ?? "").trim()

				const sourceID = regNum
					? `${STATE_IA_CONTRACTORS_ADAPTER_ID}-${regNum}`
					: stableSourceID(STATE_IA_CONTRACTORS_ADAPTER_ID, aligned)

				yield {
					raw,
					components: aligned,
					country: "US",
					locale: "en-US",
					source: STATE_IA_CONTRACTORS_ADAPTER_ID,
					source_id: sourceID,
					corpus_version: "",
					license: STATE_IA_CONTRACTORS_DEFAULT_LICENSE,
				}

				emitted++
			}
		},
	}
}

/**
 * The configured adapter instance registered with the corpus builder.
 */
export const stateIaContractorsAdapter = createStateIaContractorsAdapter()