zpan/server/services/user.ts

import { and, count, desc, eq, inArray, or, sql } from 'drizzle-orm'
import { nanoid } from 'nanoid'
import { member, organization, user } from '../db/auth-schema'
import { orgQuotaEntitlements, orgQuotas } from '../db/schema'
import type { Database } from '../platform/interface'

export interface UserWithOrg {
  id: string
  name: string
  username: string
  email: string
  image: string | null
  role: string | null
  banned: boolean | null
  createdAt: Date
  orgId: string | null
  orgName: string | null
  quotaUsed: number
  quotaDefault: number
  quotaTotal: number
}

export interface QuotaEntitlementItem {
  id: string
  orgId: string
  resourceType: string
  entitlementType: string
  source: string
  sourceId: string
  bytes: number
  startsAt: Date
  expiresAt: Date | null
  status: string
  metadata: string | null
  createdAt: Date
  updatedAt: Date
}

export interface UserOperationFailure {
  error: string
  status: 404
}

export async function listUsers(
  db: Database,
  page: number,
  pageSize: number,
  search?: string,
): Promise<{ items: UserWithOrg[]; total: number }> {
  const offset = (page - 1) * pageSize
  const term = search?.trim().toLowerCase()
  const now = new Date()
  const filter = term
    ? or(
        sql`lower(${user.name}) like ${`%${term}%`}`,
        sql`lower(${user.username}) like ${`%${term}%`}`,
        sql`lower(${user.email}) like ${`%${term}%`}`,
      )
    : undefined

  const countRows = filter
    ? await db.select({ total: count() }).from(user).where(filter)
    : await db.select({ total: count() }).from(user)
  const total = countRows[0]?.total ?? 0

  const query = db
    .select({
      id: user.id,
      name: user.name,
      username: user.username,
      email: user.email,
      image: user.image,
      role: user.role,
      banned: user.banned,
      createdAt: user.createdAt,
      orgId: organization.id,
      orgName: organization.name,
      quotaUsed: orgQuotas.used,
      quotaDefault: sql<number>`0`,
      quotaTotal: activeStorageEntitlementBytesSql(now),
    })
    .from(user)
    .leftJoin(organization, eq(organization.slug, sql`'personal-' || ${user.id}`))
    .leftJoin(orgQuotas, eq(orgQuotas.orgId, organization.id))

  const rows = await (filter ? query.where(filter) : query).orderBy(desc(user.createdAt)).limit(pageSize).offset(offset)

  const items: UserWithOrg[] = rows.map((row) => ({
    ...row,
    username: row.username ?? '',
    quotaUsed: row.quotaUsed ?? 0,
    quotaDefault: row.quotaDefault ?? 0,
    quotaTotal: row.quotaTotal ?? 0,
  }))

  return { items, total }
}

export async function getUser(db: Database, userId: string): Promise<UserWithOrg | UserOperationFailure> {
  const now = new Date()
  const rows = await db
    .select({
      id: user.id,
      name: user.name,
      username: user.username,
      email: user.email,
      image: user.image,
      role: user.role,
      banned: user.banned,
      createdAt: user.createdAt,
      orgId: organization.id,
      orgName: organization.name,
      quotaUsed: orgQuotas.used,
      quotaDefault: sql<number>`0`,
      quotaTotal: activeStorageEntitlementBytesSql(now),
    })
    .from(user)
    .leftJoin(organization, eq(organization.slug, sql`'personal-' || ${user.id}`))
    .leftJoin(orgQuotas, eq(orgQuotas.orgId, organization.id))
    .where(eq(user.id, userId))

  const row = rows[0]
  if (!row) return { error: `User not found: ${userId}`, status: 404 }
  return {
    ...row,
    username: row.username ?? '',
    quotaUsed: row.quotaUsed ?? 0,
    quotaDefault: row.quotaDefault ?? 0,
    quotaTotal: row.quotaTotal ?? 0,
  }
}

function activeStorageEntitlementBytesSql(now: Date) {
  const timestamp = now.getTime()
  return sql<number>`(
    SELECT COALESCE(SUM(${orgQuotaEntitlements.bytes}), 0)
    FROM ${orgQuotaEntitlements}
    WHERE ${orgQuotaEntitlements.orgId} = ${organization.id}
      AND ${orgQuotaEntitlements.resourceType} = 'storage'
      AND ${orgQuotaEntitlements.status} = 'active'
      AND ${orgQuotaEntitlements.startsAt} <= ${timestamp}
      AND (${orgQuotaEntitlements.expiresAt} IS NULL OR ${orgQuotaEntitlements.expiresAt} > ${timestamp})
  )`
}

export async function setUserStatus(db: Database, userId: string, status: 'active' | 'disabled'): Promise<boolean> {
  const existing = await db.select({ id: user.id }).from(user).where(eq(user.id, userId))
  if (existing.length === 0) return false

  await db
    .update(user)
    .set({ banned: status === 'disabled' })
    .where(eq(user.id, userId))
  return true
}

export async function deleteUser(db: Database, userId: string): Promise<boolean> {
  const existing = await db.select({ id: user.id }).from(user).where(eq(user.id, userId))
  if (existing.length === 0) return false

  await db.delete(user).where(eq(user.id, userId))
  return true
}

export async function setUsersStatus(
  db: Database,
  userIds: string[],
  status: 'active' | 'disabled',
): Promise<{ updated: number; ids: string[] } | UserOperationFailure> {
  const existingIds = await requireUsers(db, userIds)
  if ('error' in existingIds) return existingIds

  await db
    .update(user)
    .set({ banned: status === 'disabled' })
    .where(inArray(user.id, existingIds))
  return { updated: existingIds.length, ids: existingIds }
}

export async function deleteUsers(
  db: Database,
  userIds: string[],
): Promise<{ deleted: number; ids: string[] } | UserOperationFailure> {
  const existingIds = await requireUsers(db, userIds)
  if ('error' in existingIds) return existingIds

  await db.delete(user).where(inArray(user.id, existingIds))
  return { deleted: existingIds.length, ids: existingIds }
}

export async function listUserPersonalEntitlements(
  db: Database,
  userId: string,
): Promise<{ orgId: string; items: QuotaEntitlementItem[] } | UserOperationFailure> {
  const org = await findUserPersonalOrg(db, userId)
  if ('error' in org) return org
  const items = await db
    .select()
    .from(orgQuotaEntitlements)
    .where(eq(orgQuotaEntitlements.orgId, org.orgId))
    .orderBy(desc(orgQuotaEntitlements.createdAt))
  return { orgId: org.orgId, items }
}

export async function grantUserPersonalEntitlement(
  db: Database,
  input: {
    adminUserId: string
    targetUserId: string
    resourceType: 'storage'
    bytes: number
    expiresAt?: Date | null
    note?: string | null
  },
): Promise<{ orgId: string; entitlement: QuotaEntitlementItem } | UserOperationFailure> {
  const org = await findUserPersonalOrg(db, input.targetUserId)
  if ('error' in org) return org
  const now = new Date()
  const entitlement = {
    id: nanoid(),
    orgId: org.orgId,
    resourceType: input.resourceType,
    entitlementType: 'grant',
    source: 'admin_grant',
    sourceId: `admin_grant:${nanoid()}`,
    bytes: input.bytes,
    startsAt: now,
    expiresAt: input.expiresAt ?? null,
    status: 'active',
    metadata: JSON.stringify({
      note: input.note ?? null,
      grantedBy: input.adminUserId,
      targetUserId: input.targetUserId,
    }),
    createdAt: now,
    updatedAt: now,
  } satisfies typeof orgQuotaEntitlements.$inferInsert
  const rows = await db.insert(orgQuotaEntitlements).values(entitlement).returning()
  return { orgId: org.orgId, entitlement: rows[0] }
}

async function findUserPersonalOrg(db: Database, userId: string): Promise<{ orgId: string } | UserOperationFailure> {
  const existingIds = await requireUsers(db, [userId])
  if ('error' in existingIds) return existingIds
  const rows = await db
    .select({ orgId: organization.id })
    .from(user)
    .innerJoin(member, eq(member.userId, user.id))
    .innerJoin(
      organization,
      and(eq(organization.id, member.organizationId), eq(organization.slug, sql`'personal-' || ${user.id}`)),
    )
    .where(eq(user.id, userId))
  const orgId = rows[0]?.orgId
  if (!orgId) return { error: `Personal organization not found for user: ${userId}`, status: 404 }
  return { orgId }
}

async function requireUsers(db: Database, userIds: string[]): Promise<string[] | UserOperationFailure> {
  const uniqueIds = [...new Set(userIds)]
  const rows = await db.select({ id: user.id }).from(user).where(inArray(user.id, uniqueIds))
  if (rows.length !== uniqueIds.length) {
    const found = new Set(rows.map((row) => row.id))
    const missing = uniqueIds.filter((id) => !found.has(id))
    return { error: `User not found: ${missing.join(', ')}`, status: 404 }
  }
  return uniqueIds
}