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import { useMutation, useQuery, useQueryClient } from '@tanstack/react-query'
import type { Classroom, EnrollmentRequest, Player, User } from '@/db/schema'
import { invalidateForEvent } from '@/lib/classroom/query-invalidations'
import { api } from '@/lib/queryClient'
import { classroomKeys, playerKeys } from '@/lib/queryKeys'
// Re-export query keys for consumers
export { classroomKeys, playerKeys } from '@/lib/queryKeys'
// ============================================================================
// Types
// ============================================================================
export interface ClassroomWithTeacher extends Classroom {
teacher?: User
}
export interface EnrollmentRequestWithRelations extends EnrollmentRequest {
player?: Player
classroom?: Classroom
}
// ============================================================================
// API Functions
// ============================================================================
/**
* Fetch current user's classroom
*/
async function fetchMyClassroom(): Promise<Classroom | null> {
const res = await api('classrooms/mine')
if (res.status === 404) return null
if (!res.ok) throw new Error('Failed to fetch classroom')
const data = await res.json()
return data.classroom
}
/**
* Look up classroom by join code
*/
async function fetchClassroomByCode(code: string): Promise<ClassroomWithTeacher | null> {
if (!code || code.length < 4) return null
const res = await api(`classrooms/code/${encodeURIComponent(code)}`)
if (res.status === 404) return null
if (!res.ok) throw new Error('Failed to fetch classroom')
const data = await res.json()
return data.classroom
}
/**
* Create a new classroom
*/
async function createClassroom(params: { name: string }): Promise<Classroom> {
const res = await api('classrooms', {
method: 'POST',
headers: { 'Content-Type': 'application/json' },
body: JSON.stringify(params),
})
if (!res.ok) {
const data = await res.json()
throw new Error(data.error || 'Failed to create classroom')
}
const data = await res.json()
return data.classroom
}
// ============================================================================
// Hooks
// ============================================================================
/**
* Get current user's classroom (if they are a teacher)
*/
export function useMyClassroom() {
return useQuery({
queryKey: classroomKeys.mine(),
queryFn: fetchMyClassroom,
staleTime: 5 * 60 * 1000, // 5 minutes
})
}
/**
* Look up classroom by join code
*
* Use this when a parent wants to enroll their child.
* The query is disabled until code has at least 4 characters.
*/
export function useClassroomByCode(code: string) {
return useQuery({
queryKey: classroomKeys.byCode(code.toUpperCase()),
queryFn: () => fetchClassroomByCode(code),
enabled: code.length >= 4,
staleTime: 60 * 1000, // 1 minute
})
}
/**
* Create a new classroom
*
* Use this when a user wants to become a teacher.
* Each user can have only one classroom.
*/
export function useCreateClassroom() {
const queryClient = useQueryClient()
return useMutation({
mutationFn: createClassroom,
onSuccess: (classroom) => {
// Update the 'mine' query with the new classroom
queryClient.setQueryData(classroomKeys.mine(), classroom)
},
})
}
/**
* Check if current user is a teacher (has a classroom)
*/
export function useIsTeacher() {
const { data: classroom, isLoading } = useMyClassroom()
return {
isTeacher: classroom !== null,
isLoading,
}
}
/**
* Update classroom settings
*/
export interface UpdateClassroomParams {
name?: string
entryPromptExpiryMinutes?: number | null
regenerateCode?: boolean
}
async function updateClassroom(
classroomId: string,
params: UpdateClassroomParams
): Promise<Classroom> {
const res = await api(`classrooms/${classroomId}`, {
method: 'PATCH',
headers: { 'Content-Type': 'application/json' },
body: JSON.stringify(params),
})
if (!res.ok) {
const data = await res.json()
throw new Error(data.error || 'Failed to update classroom')
}
const data = await res.json()
return data.classroom
}
export function useUpdateClassroom() {
const queryClient = useQueryClient()
return useMutation({
mutationFn: ({ classroomId, ...params }: UpdateClassroomParams & { classroomId: string }) =>
updateClassroom(classroomId, params),
onSuccess: (classroom) => {
// Update the 'mine' query with the updated classroom
queryClient.setQueryData(classroomKeys.mine(), classroom)
},
})
}
// ============================================================================
// Enrollment API Functions
// ============================================================================
/**
* Fetch enrolled students for a classroom
*/
async function fetchEnrolledStudents(classroomId: string): Promise<Player[]> {
const res = await api(`classrooms/${classroomId}/enrollments`)
if (!res.ok) throw new Error('Failed to fetch enrolled students')
const data = await res.json()
return data.students
}
/**
* Fetch pending enrollment requests for a classroom
*/
async function fetchPendingRequests(
classroomId: string
): Promise<EnrollmentRequestWithRelations[]> {
const res = await api(`classrooms/${classroomId}/enrollment-requests`)
if (!res.ok) throw new Error('Failed to fetch enrollment requests')
const data = await res.json()
return data.requests
}
/**
* Fetch requests awaiting parent approval for a classroom
*/
async function fetchAwaitingParentApproval(
classroomId: string
): Promise<EnrollmentRequestWithRelations[]> {
const res = await api(`classrooms/${classroomId}/enrollment-requests`)
if (!res.ok) throw new Error('Failed to fetch enrollment requests')
const data = await res.json()
return data.awaitingParentApproval || []
}
/**
* Create enrollment request
*/
async function createEnrollmentRequest(params: {
classroomId: string
playerId: string
}): Promise<EnrollmentRequest> {
const res = await api(`classrooms/${params.classroomId}/enrollment-requests`, {
method: 'POST',
headers: { 'Content-Type': 'application/json' },
body: JSON.stringify({ playerId: params.playerId }),
})
if (!res.ok) {
const data = await res.json()
throw new Error(data.error || 'Failed to create enrollment request')
}
const data = await res.json()
return data.request
}
/**
* Approve enrollment request
*/
async function approveRequest(params: {
classroomId: string
requestId: string
}): Promise<{ request: EnrollmentRequest; fullyApproved: boolean }> {
const res = await api(
`classrooms/${params.classroomId}/enrollment-requests/${params.requestId}/approve`,
{ method: 'POST' }
)
if (!res.ok) {
const data = await res.json()
throw new Error(data.error || 'Failed to approve request')
}
return res.json()
}
/**
* Deny enrollment request
*/
async function denyRequest(params: {
classroomId: string
requestId: string
}): Promise<EnrollmentRequest> {
const res = await api(
`classrooms/${params.classroomId}/enrollment-requests/${params.requestId}/deny`,
{ method: 'POST' }
)
if (!res.ok) {
const data = await res.json()
throw new Error(data.error || 'Failed to deny request')
}
const data = await res.json()
return data.request
}
/**
* Unenroll student from classroom
*/
async function unenrollStudent(params: { classroomId: string; playerId: string }): Promise<void> {
const res = await api(`classrooms/${params.classroomId}/enrollments/${params.playerId}`, {
method: 'DELETE',
})
if (!res.ok) {
const data = await res.json()
throw new Error(data.error || 'Failed to unenroll student')
}
}
/**
* Directly enroll a student (bypasses request workflow)
* Used when teacher creates a student and wants to auto-enroll them
*/
async function directEnrollStudent(params: {
classroomId: string
playerId: string
}): Promise<{ enrolled: boolean }> {
const res = await api(`classrooms/${params.classroomId}/enrollments`, {
method: 'POST',
headers: { 'Content-Type': 'application/json' },
body: JSON.stringify({ playerId: params.playerId }),
})
if (!res.ok) {
const data = await res.json()
throw new Error(data.error || 'Failed to enroll student')
}
return res.json()
}
// ============================================================================
// Enrollment Hooks
// ============================================================================
/**
* Get enrolled students in a classroom
*/
export function useEnrolledStudents(classroomId: string | undefined) {
return useQuery({
queryKey: classroomKeys.enrollments(classroomId ?? ''),
queryFn: () => fetchEnrolledStudents(classroomId!),
enabled: !!classroomId,
staleTime: 60 * 1000, // 1 minute
})
}
/**
* Get pending enrollment requests for a classroom (needing teacher approval)
*/
export function usePendingEnrollmentRequests(classroomId: string | undefined) {
return useQuery({
queryKey: classroomKeys.pendingRequests(classroomId ?? ''),
queryFn: () => fetchPendingRequests(classroomId!),
enabled: !!classroomId,
staleTime: 30 * 1000, // 30 seconds
})
}
/**
* Get requests awaiting parent approval (teacher has approved, waiting on parent)
*/
export function useAwaitingParentApproval(classroomId: string | undefined) {
return useQuery({
queryKey: classroomKeys.awaitingParentApproval(classroomId ?? ''),
queryFn: () => fetchAwaitingParentApproval(classroomId!),
enabled: !!classroomId,
staleTime: 30 * 1000, // 30 seconds
})
}
/**
* Create enrollment request mutation
*
* Used by parents to request enrollment of their child in a classroom.
*/
export function useCreateEnrollmentRequest() {
const queryClient = useQueryClient()
return useMutation({
mutationFn: createEnrollmentRequest,
onSuccess: (_, { classroomId }) => {
invalidateForEvent(queryClient, 'requestCreated', { classroomId })
},
})
}
/**
* Approve enrollment request mutation (for teachers)
*/
export function useApproveEnrollmentRequest() {
const queryClient = useQueryClient()
return useMutation({
mutationFn: approveRequest,
onSuccess: (result, { classroomId }) => {
if (result.fullyApproved) {
invalidateForEvent(queryClient, 'enrollmentCompleted', {
classroomId,
playerId: result.request.playerId,
})
} else {
invalidateForEvent(queryClient, 'requestApproved', { classroomId })
}
},
})
}
/**
* Deny enrollment request mutation (for teachers)
*/
export function useDenyEnrollmentRequest() {
const queryClient = useQueryClient()
return useMutation({
mutationFn: denyRequest,
onSuccess: (_, { classroomId }) => {
invalidateForEvent(queryClient, 'requestDenied', { classroomId })
},
})
}
/**
* Unenroll student mutation
*/
export function useUnenrollStudent() {
const queryClient = useQueryClient()
return useMutation({
mutationFn: unenrollStudent,
onSuccess: (_, { classroomId, playerId }) => {
invalidateForEvent(queryClient, 'studentUnenrolled', { classroomId, playerId })
},
})
}
/**
* Directly enroll a student (bypasses request workflow)
*
* Use this when a teacher creates a student and wants to auto-enroll them
* in their classroom. Since the teacher created the student, there's no
* parent to approve.
*/
export function useDirectEnrollStudent() {
const queryClient = useQueryClient()
return useMutation({
mutationFn: directEnrollStudent,
onSuccess: (_, { classroomId, playerId }) => {
invalidateForEvent(queryClient, 'enrollmentCompleted', { classroomId, playerId })
},
})
}
// ============================================================================
// Parent Enrollment Approval API Functions
// ============================================================================
/**
* Fetch pending enrollment requests for current user as parent
*/
async function fetchPendingApprovalsForParent(): Promise<EnrollmentRequestWithRelations[]> {
const res = await api('enrollment-requests/pending')
if (!res.ok) throw new Error('Failed to fetch pending approvals')
const data = await res.json()
return data.requests
}
/**
* Approve enrollment request as parent
*/
async function approveRequestAsParent(
requestId: string
): Promise<{ request: EnrollmentRequest; enrolled: boolean }> {
const res = await api(`enrollment-requests/${requestId}/approve`, {
method: 'POST',
})
if (!res.ok) {
const data = await res.json()
throw new Error(data.error || 'Failed to approve request')
}
return res.json()
}
/**
* Deny enrollment request as parent
*/
async function denyRequestAsParent(requestId: string): Promise<EnrollmentRequest> {
const res = await api(`enrollment-requests/${requestId}/deny`, {
method: 'POST',
})
if (!res.ok) {
const data = await res.json()
throw new Error(data.error || 'Failed to deny request')
}
const data = await res.json()
return data.request
}
// ============================================================================
// Parent Enrollment Approval Hooks
// ============================================================================
/**
* Get pending enrollment requests for current user as parent
*
* These are requests initiated by teachers for the user's children,
* where parent approval hasn't been given yet.
*/
export function usePendingApprovalsForParent() {
return useQuery({
queryKey: classroomKeys.pendingParentApprovals(),
queryFn: fetchPendingApprovalsForParent,
staleTime: 30 * 1000, // 30 seconds
})
}
/**
* Approve enrollment request as parent
*/
export function useApproveEnrollmentRequestAsParent() {
const queryClient = useQueryClient()
return useMutation({
mutationFn: approveRequestAsParent,
onSuccess: (result) => {
if (result.enrolled) {
invalidateForEvent(queryClient, 'enrollmentCompleted', {
classroomId: result.request.classroomId,
playerId: result.request.playerId,
})
} else {
invalidateForEvent(queryClient, 'requestApproved', {
classroomId: result.request.classroomId,
})
}
},
})
}
/**
* Deny enrollment request as parent
*/
export function useDenyEnrollmentRequestAsParent() {
const queryClient = useQueryClient()
return useMutation({
mutationFn: denyRequestAsParent,
onSuccess: (request) => {
invalidateForEvent(queryClient, 'requestDenied', {
classroomId: request.classroomId,
})
},
})
}
// ============================================================================
// Classroom Presence API Functions
// ============================================================================
export interface PresenceStudent extends Player {
enteredAt: string
enteredBy: string
}
/**
* Fetch students currently present in a classroom
*/
async function fetchClassroomPresence(classroomId: string): Promise<PresenceStudent[]> {
const res = await api(`classrooms/${classroomId}/presence`)
if (!res.ok) throw new Error('Failed to fetch classroom presence')
const data = await res.json()
return data.students
}
/**
* Enter a student into a classroom
*/
async function enterClassroom(params: {
classroomId: string
playerId: string
}): Promise<{ success: boolean; error?: string }> {
const res = await api(`classrooms/${params.classroomId}/presence`, {
method: 'POST',
headers: { 'Content-Type': 'application/json' },
body: JSON.stringify({ playerId: params.playerId }),
})
const data = await res.json()
if (!res.ok) {
return { success: false, error: data.error || 'Failed to enter classroom' }
}
return { success: true }
}
/**
* Remove a student from a classroom
*/
async function leaveClassroom(params: { classroomId: string; playerId: string }): Promise<void> {
const res = await api(`classrooms/${params.classroomId}/presence/${params.playerId}`, {
method: 'DELETE',
})
if (!res.ok) {
const data = await res.json()
throw new Error(data.error || 'Failed to leave classroom')
}
}
// ============================================================================
// Classroom Presence Hooks
// ============================================================================
/**
* Get students currently present in a classroom
*/
export function useClassroomPresence(classroomId: string | undefined) {
return useQuery({
queryKey: classroomKeys.presence(classroomId ?? ''),
queryFn: () => fetchClassroomPresence(classroomId!),
enabled: !!classroomId,
staleTime: 15 * 1000, // 15 seconds - presence changes frequently
refetchInterval: 30 * 1000, // Poll every 30 seconds for real-time feel
})
}
/**
* Enter a student into a classroom
*/
export function useEnterClassroom() {
const queryClient = useQueryClient()
return useMutation({
mutationFn: enterClassroom,
onSuccess: (result, { classroomId, playerId }) => {
if (result.success) {
invalidateForEvent(queryClient, 'studentEntered', { classroomId, playerId })
}
},
})
}
/**
* Remove a student from a classroom
*/
export function useLeaveClassroom() {
const queryClient = useQueryClient()
return useMutation({
mutationFn: leaveClassroom,
onSuccess: (_, { classroomId, playerId }) => {
invalidateForEvent(queryClient, 'studentLeft', { classroomId, playerId })
},
})
}
// ============================================================================
// Active Sessions API Functions and Hooks
// ============================================================================
/**
* Active session information for a student
*/
export interface ActiveSessionInfo {
/** Session plan ID (for observation) */
sessionId: string
/** Player ID */
playerId: string
/** When the session started */
startedAt: string
/** Current part index */
currentPartIndex: number
/** Current slot index within the part */
currentSlotIndex: number
/** Total parts in session */
totalParts: number
/** Total problems in session */
totalProblems: number
/** Number of completed problems */
completedProblems: number
/** Whether the student is currently present in the classroom */
isPresent?: boolean
}
/**
* Fetch active practice sessions for students in a classroom
*/
async function fetchActiveSession(classroomId: string): Promise<ActiveSessionInfo[]> {
const res = await api(`classrooms/${classroomId}/presence/active-sessions`)
if (!res.ok) throw new Error('Failed to fetch active sessions')
const data = await res.json()
return data.sessions
}
/**
* Get active practice sessions for students in a classroom
*
* Teachers can use this to see which students are currently practicing
* and observe their sessions in real-time.
*/
export function useActiveSessionsInClassroom(classroomId: string | undefined) {
return useQuery({
queryKey: classroomKeys.activeSessions(classroomId ?? ''),
queryFn: () => fetchActiveSession(classroomId!),
enabled: !!classroomId,
staleTime: 10 * 1000, // 10 seconds - sessions change frequently
refetchInterval: 15 * 1000, // Poll every 15 seconds for real-time updates
})
}
// ============================================================================
// Student Enrollment API Functions
// ============================================================================
export interface PresenceInfo {
playerId: string
classroomId: string
enteredAt: string
enteredBy: string
classroom?: Classroom
}
/**
* Fetch classrooms a student is enrolled in
*/
async function fetchEnrolledClassrooms(playerId: string): Promise<Classroom[]> {
const res = await api(`players/${playerId}/enrolled-classrooms`)
if (!res.ok) throw new Error('Failed to fetch enrolled classrooms')
const data = await res.json()
return data.classrooms
}
/**
* Fetch student's current classroom presence
*/
async function fetchStudentPresence(playerId: string): Promise<PresenceInfo | null> {
const res = await api(`players/${playerId}/presence`)
if (!res.ok) throw new Error('Failed to fetch student presence')
const data = await res.json()
return data.presence
}
// ============================================================================
// Student Enrollment Hooks
// ============================================================================
/**
* Get classrooms a student is enrolled in
*/
export function useEnrolledClassrooms(playerId: string | undefined) {
return useQuery({
queryKey: playerKeys.enrolledClassrooms(playerId!),
queryFn: () => fetchEnrolledClassrooms(playerId!),
enabled: !!playerId,
staleTime: 60 * 1000, // 1 minute
})
}
/**
* Get student's current classroom presence
*/
export function useStudentPresence(playerId: string | undefined) {
return useQuery({
queryKey: playerKeys.presence(playerId!),
queryFn: () => fetchStudentPresence(playerId!),
enabled: !!playerId,
staleTime: 30 * 1000, // 30 seconds
})
}
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