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vcoppe
2024-05-07 13:19:02 +02:00
parent f2bba14174
commit 2379cb2860
1 changed files with 21 additions and 8 deletions
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29
website/src/lib/db.ts
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@@ -10,7 +10,7 @@ class Database extends Dexie {
fileids!: Dexie.Table<string, string>;
files!: Dexie.Table<FreezedObject<GPXFile>, string>;
patches!: Dexie.Table<{ patch: Patch[], inversePatch: Patch[] }, number>;
patches!: Dexie.Table<{ patch: Patch[], inversePatch: Patch[], index: number }, number>;
settings!: Dexie.Table<any, string>;
constructor() {
@@ -175,9 +175,19 @@ liveQuery(() => db.fileids.toArray()).subscribe(dbFileIds => {
});
const patchIndex: Readable<number> = dexieStore(() => db.settings.get('patchIndex'), -1);
const patchCount: Readable<number> = dexieStore(() => db.patches.count(), 0);
export const canUndo: Readable<boolean> = derived(patchIndex, ($patchIndex) => $patchIndex >= 0);
export const canRedo: Readable<boolean> = derived([patchIndex, patchCount], ([$patchIndex, $patchCount]) => $patchIndex < $patchCount - 1);
const patchMinMaxIndex: Readable<{ min: number, max: number }> = dexieStore(() => {
let ordered = db.patches.orderBy(':id');
return Promise.all([ordered.first(), ordered.last()]).then(([first, last]) => {
return {
min: first?.index ?? 0,
max: (last?.index ?? -1) + 1
};
});
}, { min: 0, max: 0 });
export const canUndo: Readable<boolean> = derived([patchIndex, patchMinMaxIndex], ([$patchIndex, $patchMinMaxIndex]) => $patchIndex >= $patchMinMaxIndex.min);
export const canRedo: Readable<boolean> = derived([patchIndex, patchMinMaxIndex], ([$patchIndex, $patchMinMaxIndex]) => {
return $patchIndex < $patchMinMaxIndex.max - 1;
});
// Helper function to apply a callback to the global file state
function applyGlobal(callback: (files: Map<string, GPXFile>) => void) {
@@ -207,14 +217,17 @@ function applyToFiles(fileIds: string[], callback: (file: GPXFile) => void) {
// Store the new patches in the database
async function storePatches(patch: Patch[], inversePatch: Patch[]) {
if (get(patchIndex) !== undefined) {
db.patches.where(':id').above(get(patchIndex)).delete();
db.patches.where(':id').above(get(patchIndex)).delete(); // Delete all patches after the current patch to avoid redoing them
db.patches.where(':id').below(get(patchMinMaxIndex).max - 50).delete(); // Keep only the last 50 patches
}
db.transaction('rw', db.patches, db.settings, async () => {
let index = get(patchIndex) + 1;
await db.patches.put({
patch,
inversePatch
}, get(patchIndex) + 1);
await db.settings.put(get(patchIndex) + 1, 'patchIndex');
inversePatch,
index
}, index);
await db.settings.put(index, 'patchIndex');
});
}