"use server"

import { revalidatePath } from "next/cache"
import { redirect } from "next/navigation"

import { auth } from "@/auth"
import { isAdminEmail } from "@/lib/admin-auth"
import { deleteInvitationGroup } from "@/lib/db/queries/invitations"
import {
  deleteInvitationMember,
  updateInvitationMemberName,
} from "@/lib/db/queries/members"
import { deleteUploadObject } from "@/lib/storage/uploads"
import { deleteInvitationSchema } from "@/lib/validation/invitation"
import {
  deleteInvitationMemberSchema,
  updateInvitationMemberSchema,
} from "@/lib/validation/member"

export interface DeleteInvitationActionState {
  error: string | null
}

export interface MemberActionState {
  error: string | null
  success: boolean
}

export async function deleteInvitationAction(
  _previousState: DeleteInvitationActionState,
  formData: FormData,
): Promise<DeleteInvitationActionState> {
  const session = await auth()
  const adminEmail = session?.user?.email

  if (!isAdminEmail(adminEmail)) {
    return { error: "You are not allowed to delete invitations." }
  }

  const authorizedAdminEmail = adminEmail ?? ""

  const parsed = deleteInvitationSchema.safeParse({
    invitationId: formData.get("invitationId"),
  })

  if (!parsed.success) {
    return { error: "Could not delete this guest group." }
  }

  let deleted: Awaited<ReturnType<typeof deleteInvitationGroup>>

  try {
    deleted = await deleteInvitationGroup(parsed.data.invitationId, authorizedAdminEmail)
  } catch (error) {
    console.error("Failed to delete invitation group", error)
    return { error: "Could not delete this guest group. Please try again." }
  }

  if (!deleted) {
    return { error: "This guest group was already removed." }
  }

  if (deleted.photoObjectKey) {
    try {
      await deleteUploadObject(deleted.photoObjectKey)
    } catch (error) {
      console.error("Failed to delete uploaded photo object", {
        invitationId: deleted.id,
        objectKey: deleted.photoObjectKey,
        error,
      })
    }
  }

  revalidatePath("/admin/guests")
  redirect("/admin/guests?deleted=1")
}

export async function updateInvitationMemberAction(
  _previousState: MemberActionState,
  formData: FormData,
): Promise<MemberActionState> {
  const session = await auth()
  const adminEmail = session?.user?.email

  if (!isAdminEmail(adminEmail)) {
    return { error: "You are not allowed to edit guest members.", success: false }
  }
  const authorizedAdminEmail = adminEmail ?? ""

  const parsed = updateInvitationMemberSchema.safeParse({
    invitationId: formData.get("invitationId")?.toString(),
    memberId: formData.get("memberId")?.toString(),
    name: formData.get("name")?.toString(),
  })

  if (!parsed.success) return { error: "Enter a valid member name.", success: false }

  try {
    const result = await updateInvitationMemberName({
      ...parsed.data,
      adminEmail: authorizedAdminEmail,
    })

    if (result.status === "not_found") {
      return { error: "This guest member was not found.", success: false }
    }
  } catch (error) {
    console.error("Failed to update invitation member", error)
    return { error: "Could not update this guest member. Please try again.", success: false }
  }

  revalidatePath(`/admin/guests/${parsed.data.invitationId}`)
  revalidatePath("/admin/guests")
  revalidatePath("/admin")
  return { error: null, success: true }
}

export async function deleteInvitationMemberAction(
  _previousState: MemberActionState,
  formData: FormData,
): Promise<MemberActionState> {
  const session = await auth()
  const adminEmail = session?.user?.email

  if (!isAdminEmail(adminEmail)) {
    return { error: "You are not allowed to delete guest members.", success: false }
  }
  const authorizedAdminEmail = adminEmail ?? ""

  const parsed = deleteInvitationMemberSchema.safeParse({
    invitationId: formData.get("invitationId")?.toString(),
    memberId: formData.get("memberId")?.toString(),
  })

  if (!parsed.success) return { error: "Could not delete this guest member.", success: false }

  try {
    const result = await deleteInvitationMember({ ...parsed.data, adminEmail: authorizedAdminEmail })

    if (result.status === "not_found") {
      return { error: "This guest member was already removed.", success: false }
    }
    if (result.status === "last_member") {
      return { error: "A guest group must have at least one member.", success: false }
    }
  } catch (error) {
    console.error("Failed to delete invitation member", error)
    return { error: "Could not delete this guest member. Please try again.", success: false }
  }

  revalidatePath(`/admin/guests/${parsed.data.invitationId}`)
  revalidatePath("/admin/guests")
  revalidatePath("/admin")
  return { error: null, success: true }
}