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import { Alert } from 'react-native';
import * as ImagePicker from 'expo-image-picker';
import * as ImageManipulator from 'expo-image-manipulator';
import { UserProfile } from '@/models/profile';
import type { ProfileEventSummary } from '@/models/profile';
import type { PrivacyLevel } from '@/models/event';
import {
confirmProfileAvatarUpload,
getMyCanceledEvents,
getMyCompletedEvents,
getMyHostedEvents,
getMyProfile,
getProfileAvatarUploadUrl,
getMyUpcomingEvents,
} from '@/services/profileService';
import { ApiError } from '@/services/api';
import { useAuth } from '@/contexts/AuthContext';
import { uploadFileToPresignedUrl } from '@/services/eventService';
import { shouldShowProfileEvent } from '@/utils/eventStatus';
export interface ProfileEventItem {
id: string;
title: string;
start_time: string;
end_time?: string | null;
image_url?: string | null;
category_label: string;
status: string;
privacy_level: PrivacyLevel | null;
}
export interface ProfileViewModel {
profile: UserProfile | null;
isLoading: boolean;
isUploadingAvatar: boolean;
apiError: string | null;
imageError: string | null;
imageUploadSuccessMessage: string | null;
primaryName: string;
secondaryName: string | null;
avatarInitial: string;
overallRatingLabel: string;
hostRatingLabel: string;
participantRatingLabel: string;
hostedEvents: ProfileEventItem[];
attendedEvents: ProfileEventItem[];
hostedCount: number;
attendedCount: number;
pickAvatar: () => Promise<void>;
refresh: () => Promise<void>;
}
function decodeFileUriOnce(uri: string): string {
if (!uri.startsWith('file://')) {
return uri;
}
try {
return `file://${decodeURIComponent(uri.slice('file://'.length))}`;
} catch {
return uri;
}
}
function normalizePickedImageUri(uri: string): string {
let normalized = uri;
for (let i = 0; i < 3; i += 1) {
const next = decodeFileUriOnce(normalized);
if (next === normalized) break;
normalized = next;
}
return normalized;
}
function getPickedImageUriCandidates(uri: string): string[] {
return [...new Set([uri, decodeFileUriOnce(uri), normalizePickedImageUri(uri)])];
}
async function preparePickedImageUri(uri: string): Promise<string> {
let lastError: unknown = null;
for (const candidateUri of getPickedImageUriCandidates(uri)) {
try {
const preparedImage = await ImageManipulator.manipulateAsync(
candidateUri,
[],
{ compress: 0.9, format: ImageManipulator.SaveFormat.JPEG },
);
return preparedImage.uri;
} catch (error) {
lastError = error;
}
}
throw lastError ?? new Error('Could not prepare the selected image');
}
async function selectAvatarImage(): Promise<ImagePicker.ImagePickerResult> {
return ImagePicker.launchImageLibraryAsync({
mediaTypes: ['images'],
allowsEditing: true,
aspect: [1, 1],
quality: 0.8,
});
}
function normalizeEndTime(value?: string | null): string | null {
Iif (!value) return null;
const trimmed = value.trim();
Iif (!trimmed) return null;
// Some profile-event endpoints serialize missing end times as Go's zero time.
if (trimmed.startsWith('0001-01-01')) return null;
return trimmed;
}
function mapProfileEvent(event: ProfileEventSummary): ProfileEventItem {
return {
id: event.id,
title: event.title,
start_time: event.start_time,
end_time: normalizeEndTime(event.end_time),
image_url: event.image_url ?? null,
category_label: event.category ?? 'Event',
status: event.status,
privacy_level: event.privacy_level ?? null,
};
}
function mergeEventsById(...groups: ProfileEventSummary[][]): ProfileEventItem[] {
const seen = new Set<string>();
const merged: ProfileEventItem[] = [];
for (const group of groups) {
for (const event of group) {
if (seen.has(event.id)) continue;
seen.add(event.id);
merged.push(mapProfileEvent(event));
}
}
return merged;
}
function excludeHostedEvents(
events: ProfileEventItem[],
hosted: ProfileEventItem[],
): ProfileEventItem[] {
const hostedIds = new Set(hosted.map((event) => event.id));
return events.filter((event) => !hostedIds.has(event.id));
}
export function useProfileViewModel(): ProfileViewModel {
const { token } = useAuth();
const [profile, setProfile] = useState<UserProfile | null>(null);
const [hostedEvents, setHostedEvents] = useState<ProfileEventItem[]>([]);
const [attendedEvents, setAttendedEvents] = useState<ProfileEventItem[]>([]);
const [isLoading, setIsLoading] = useState(true);
const [isUploadingAvatar, setIsUploadingAvatar] = useState(false);
const [apiError, setApiError] = useState<string | null>(null);
const [imageError, setImageError] = useState<string | null>(null);
const [imageUploadSuccessMessage, setImageUploadSuccessMessage] = useState<string | null>(null);
const imageUploadSuccessTimerRef = useRef<ReturnType<typeof setTimeout> | null>(null);
const [overallRatingLabel, setOverallRatingLabel] = useState('New');
const [hostRatingLabel, setHostRatingLabel] = useState('New');
const [participantRatingLabel, setParticipantRatingLabel] = useState('New');
const fetchProfile = useCallback(
async (mode: 'initial' | 'refresh') => {
if (!token) {
setProfile(null);
setHostedEvents([]);
setAttendedEvents([]);
setOverallRatingLabel('New');
setHostRatingLabel('New');
setParticipantRatingLabel('New');
setApiError('You must be logged in to view your profile.');
setIsLoading(false);
return;
}
if (mode === 'initial') setIsLoading(true);
setApiError(null);
try {
const [
profileResult,
hostedResult,
upcomingResult,
completedResult,
canceledResult,
] = await Promise.all([
getMyProfile(token),
getMyHostedEvents(token),
getMyUpcomingEvents(token),
getMyCompletedEvents(token),
getMyCanceledEvents(token),
]);
setProfile(profileResult);
const allHostedEvents = hostedResult.events.map(mapProfileEvent);
const visibleHostedEvents = allHostedEvents.filter((event) =>
shouldShowProfileEvent(event.status),
);
const mergedAttendedEvents = excludeHostedEvents(
mergeEventsById(
upcomingResult.events,
completedResult.events,
canceledResult.events,
),
allHostedEvents,
).filter((event) => shouldShowProfileEvent(event.status));
setHostedEvents(visibleHostedEvents);
setAttendedEvents(mergedAttendedEvents);
setOverallRatingLabel(
profileResult.final_score != null
? profileResult.final_score.toFixed(1)
: 'New',
);
setHostRatingLabel(
profileResult.host_score?.score != null
? profileResult.host_score.score.toFixed(1)
: 'New',
);
setParticipantRatingLabel(
profileResult.participant_score?.score != null
? profileResult.participant_score.score.toFixed(1)
: 'New',
);
} catch (err) {
setHostedEvents([]);
setAttendedEvents([]);
setOverallRatingLabel('New');
setHostRatingLabel('New');
setParticipantRatingLabel('New');
if (err instanceof ApiError) {
setApiError(err.message);
} else {
setApiError('Failed to load profile. Please try again.');
}
} finally {
setIsLoading(false);
}
},
[token],
);
useEffect(() => {
void fetchProfile('initial');
}, [token]);
useEffect(
() => () => {
Iif (imageUploadSuccessTimerRef.current) clearTimeout(imageUploadSuccessTimerRef.current);
},
[],
);
const refresh = useCallback(async () => {
await fetchProfile('refresh');
}, [fetchProfile]);
const pickAvatar = useCallback(async () => {
if (!token) {
setImageError('You must be logged in to update your profile photo.');
return;
}
setImageError(null);
if (imageUploadSuccessTimerRef.current) {
clearTimeout(imageUploadSuccessTimerRef.current);
imageUploadSuccessTimerRef.current = null;
}
setImageUploadSuccessMessage(null);
try {
const permission = await ImagePicker.requestMediaLibraryPermissionsAsync();
if (permission.status !== 'granted') {
const message = 'Please allow access to your photo library to add a profile photo.';
setImageError(message);
Alert.alert('Permission required', message);
return;
}
const result = await selectAvatarImage();
if (result.canceled) return;
const asset = result.assets[0];
if (!asset?.uri) {
setImageError('We could not read the selected image. Please try a different one.');
return;
}
let preparedImageUri: string;
try {
preparedImageUri = await preparePickedImageUri(asset.uri);
} catch {
setImageError('We could not process the selected image. Please try a different one.');
return;
}
setIsUploadingAvatar(true);
const original = await ImageManipulator.manipulateAsync(
preparedImageUri,
[{ resize: { width: 1200 } }],
{ compress: 0.8, format: ImageManipulator.SaveFormat.JPEG },
);
const small = await ImageManipulator.manipulateAsync(
preparedImageUri,
[{ resize: { width: 400 } }],
{ compress: 0.7, format: ImageManipulator.SaveFormat.JPEG },
);
const uploadInit = await getProfileAvatarUploadUrl(token);
const originalUpload = uploadInit.uploads.find((u) => u.variant === 'ORIGINAL');
const smallUpload = uploadInit.uploads.find((u) => u.variant === 'SMALL');
if (!originalUpload || !smallUpload) {
throw new Error('Missing upload instructions from server');
}
await Promise.all([
uploadFileToPresignedUrl(
originalUpload.method,
originalUpload.url,
originalUpload.headers,
original.uri,
),
uploadFileToPresignedUrl(
smallUpload.method,
smallUpload.url,
smallUpload.headers,
small.uri,
),
]);
await confirmProfileAvatarUpload(uploadInit.confirm_token, token);
await refresh();
if (imageUploadSuccessTimerRef.current) clearTimeout(imageUploadSuccessTimerRef.current);
setImageUploadSuccessMessage('Profile photo updated successfully.');
imageUploadSuccessTimerRef.current = setTimeout(() => {
setImageUploadSuccessMessage(null);
imageUploadSuccessTimerRef.current = null;
}, 5000);
} catch (error) {
if (error instanceof ApiError) {
setImageError(error.message);
} else {
setImageError('We could not upload the selected image. Please try again.');
}
} finally {
setIsUploadingAvatar(false);
}
}, [refresh, token]);
const primaryName = profile?.display_name ?? profile?.username ?? '';
const secondaryName = profile?.display_name ? profile.username : null;
const avatarInitial = primaryName.trim().charAt(0).toUpperCase() || '?';
return {
profile,
isLoading,
isUploadingAvatar,
apiError,
imageError,
imageUploadSuccessMessage,
primaryName,
secondaryName,
avatarInitial,
overallRatingLabel,
hostRatingLabel,
participantRatingLabel,
hostedEvents,
attendedEvents,
hostedCount: hostedEvents.length,
attendedCount: attendedEvents.length,
pickAvatar,
refresh,
};
}
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