import { IndexedDBError } from './IndexedDBError'
import type { CoreAccessors } from './core'
import { getObjectStore } from './store'

export async function putValue<T>(accessors: CoreAccessors, value: T): Promise<void> {
  const {storeName} = accessors.getConfig()
  try {
    const store = await getObjectStore(accessors, 'readwrite')
    await wrapVoidRequest(store.put(value), 'put', storeName)
  } catch (error) {
    throw ensureIndexedDBError(error, 'put', storeName)
  }
}

export async function addValue<T>(accessors: CoreAccessors, value: T): Promise<void> {
  const {storeName} = accessors.getConfig()
  try {
    const store = await getObjectStore(accessors, 'readwrite')
    await wrapVoidRequest(store.add(value), 'add', storeName)
  } catch (error) {
    throw ensureIndexedDBError(error, 'add', storeName)
  }
}

export async function deleteValue(accessors: CoreAccessors, key: string | number): Promise<void> {
  const {storeName} = accessors.getConfig()
  try {
    const store = await getObjectStore(accessors, 'readwrite')
    await wrapVoidRequest(store.delete(key), 'delete', storeName)
  } catch (error) {
    throw ensureIndexedDBError(error, 'delete', storeName)
  }
}

export async function clearStore(accessors: CoreAccessors): Promise<void> {
  const {storeName} = accessors.getConfig()
  try {
    const store = await getObjectStore(accessors, 'readwrite')
    await wrapVoidRequest(store.clear(), 'clear', storeName)
  } catch (error) {
    throw ensureIndexedDBError(error, 'clear', storeName)
  }
}

function wrapVoidRequest(requestParam: IDBRequest, operation: string, storeName: string): Promise<void> {
  return new Promise<void>((resolve, reject) => {
    const request = requestParam
    request.onsuccess = (): void => resolve()
    request.onerror = (): void => reject(new IndexedDBError(`Failed to ${operation}: ${request.error}`, operation, storeName, request.error))
  })
}

function ensureIndexedDBError(error: unknown, operation: string, storeName: string): IndexedDBError {
  if (error instanceof IndexedDBError) {
    return error
  }
  return new IndexedDBError(error instanceof Error ? error.message : 'Unknown error', operation, storeName, error)
}