/**
 * Turns an export of first-party custom avatar items into a D1 migration that seeds the
 * `custom_avatar_item` table with them, the way `apps/rooms/migrations/0002_import_rooms.sql`
 * seeds the rooms.
 *
 *   bun apps/api/scripts/import-custom-avatar-items.ts <export.json> <NNNN>
 *
 * `export.json` is a JSON array of `CustomAvatarItem` records as the official service serves
 * them (a `{ Results: [...] }` page or a single record are accepted too). `NNNN` is the
 * migration number; the file is written to `apps/api/migrations/NNNN_import_custom_avatar_items.sql`.
 *
 * For a load that needs no migration and no deploy — the usual case — use
 * `just admin cai-load` instead, which runs the same statements straight against a database.
 * The statements come from src/custom-avatar-items-load.ts either way: each record stored as
 * the row's JSON minus `PurchaseInfo`, with `CreatorAccountId` forced to the Coach account (1)
 * and each save's `ThumbnailFileName` put under `avatar/`, an existing id REPLACED, nothing
 * deleted.
 *
 * The export's `Price` is mostly 0; run `price-custom-avatar-items.ts` against it first to fill
 * in prices from the storefront dump.
 *
 * The saves name assetbundles by bare filename; the migration does nothing about those files,
 * which have to be served from wherever the client fetches them.
 */

import { readFileSync, writeFileSync } from 'node:fs'

import {
	customAvatarItemUpsertStatements,
	readCustomAvatarItemExport,
} from '../src/custom-avatar-items-load'

const [input, number] = process.argv.slice(2)
if (!input || !number || !/^\d{4}$/.test(number)) {
	console.error('usage: bun apps/api/scripts/import-custom-avatar-items.ts <export.json> <NNNN>')
	process.exit(2)
}

// Tolerate the BOM a .NET export carries (`JSON.parse` rejects U+FEFF).
const records = readCustomAvatarItemExport(
	JSON.parse(readFileSync(input, 'utf8').replace(/^/, ''))
)
const lines = [
	`-- Seed first-party custom avatar items (${records.length} records) from ${input.split('/').pop()}.`,
	'-- Generated by apps/api/scripts/import-custom-avatar-items.ts — do not edit by hand.',
	'-- Each record is the official `CustomAvatarItem`, filed under the Coach account (CreatorAccountId 1);',
	'-- an existing id is replaced.',
	'',
	...customAvatarItemUpsertStatements(records),
]

const out = decodeURIComponent(
	new URL(`../migrations/${number}_import_custom_avatar_items.sql`, import.meta.url).pathname
)
writeFileSync(out, lines.join('\n') + '\n')
console.log(`wrote ${records.length} records to ${out}`)