export const DB_NAME = 'opchan-local';
export const DB_VERSION = 3;
export const STORE = {
    CELLS: 'cells',
    POSTS: 'posts',
    COMMENTS: 'comments',
    VOTES: 'votes',
    MODERATIONS: 'moderations',
    USER_IDENTITIES: 'userIdentities',
    USER_AUTH: 'userAuth',
    DELEGATION: 'delegation',
    UI_STATE: 'uiState',
    META: 'meta',
    BOOKMARKS: 'bookmarks',
};
/**
 * Open (and create/upgrade) the IndexedDB database used by LocalDatabase.
 * Minimal schema focused on key-based access patterns we already use in memory.
 */
export function openLocalDB() {
    return new Promise((resolve, reject) => {
        const request = indexedDB.open(DB_NAME, DB_VERSION);
        request.onerror = () => reject(request.error);
        request.onsuccess = () => resolve(request.result);
        request.onupgradeneeded = () => {
            const db = request.result;
            // Create stores if they do not exist
            if (!db.objectStoreNames.contains(STORE.CELLS)) {
                db.createObjectStore(STORE.CELLS, { keyPath: 'id' });
            }
            if (!db.objectStoreNames.contains(STORE.POSTS)) {
                const store = db.createObjectStore(STORE.POSTS, { keyPath: 'id' });
                // Minimal index to fetch posts by cellId
                store.createIndex('by_cellId', 'cellId', { unique: false });
            }
            if (!db.objectStoreNames.contains(STORE.COMMENTS)) {
                const store = db.createObjectStore(STORE.COMMENTS, { keyPath: 'id' });
                // Minimal index to fetch comments by postId
                store.createIndex('by_postId', 'postId', { unique: false });
            }
            if (!db.objectStoreNames.contains(STORE.VOTES)) {
                // Votes are keyed by composite key `${targetId}:${author}`
                db.createObjectStore(STORE.VOTES, { keyPath: 'key' });
            }
            if (!db.objectStoreNames.contains(STORE.MODERATIONS)) {
                // Moderations keyed by targetId
                db.createObjectStore(STORE.MODERATIONS, { keyPath: 'targetId' });
            }
            if (!db.objectStoreNames.contains(STORE.USER_IDENTITIES)) {
                // User identities keyed by address
                db.createObjectStore(STORE.USER_IDENTITIES, { keyPath: 'address' });
            }
            if (!db.objectStoreNames.contains(STORE.USER_AUTH)) {
                // User authentication data with single key 'current'
                db.createObjectStore(STORE.USER_AUTH, { keyPath: 'key' });
            }
            if (!db.objectStoreNames.contains(STORE.DELEGATION)) {
                // Key delegation information with single key 'current'
                db.createObjectStore(STORE.DELEGATION, { keyPath: 'key' });
            }
            if (!db.objectStoreNames.contains(STORE.UI_STATE)) {
                // UI state like wizard flags, preferences
                db.createObjectStore(STORE.UI_STATE, { keyPath: 'key' });
            }
            if (!db.objectStoreNames.contains(STORE.META)) {
                // Misc metadata like lastSync timestamps
                db.createObjectStore(STORE.META, { keyPath: 'key' });
            }
            if (!db.objectStoreNames.contains(STORE.BOOKMARKS)) {
                const store = db.createObjectStore(STORE.BOOKMARKS, { keyPath: 'id' });
                // Index to fetch bookmarks by user
                store.createIndex('by_userId', 'userId', { unique: false });
                // Index to fetch bookmarks by type
                store.createIndex('by_type', 'type', { unique: false });
                // Index to fetch bookmarks by targetId
                store.createIndex('by_targetId', 'targetId', { unique: false });
            }
        };
    });
}
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