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Update useAssetURL to avoid database access when not needed

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This commit is contained in:
Mitchell McCaffrey 2021-05-13 16:28:02 +10:00
parent 2ac3fcf5fb
commit 2b8bc11b5c
1 changed files with 42 additions and 25 deletions
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67
src/contexts/AssetsContext.js
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@ -179,31 +179,48 @@ export function useAssetURL(assetId, type, defaultSources, unknownSource) {
return;
}
async function updateAssetURL() {
const asset = await getAsset(assetId);
if (asset) {
setAssetURLs((prevURLs) => {
if (assetId in prevURLs) {
// Check if the asset url is already added and increase references
return {
...prevURLs,
[assetId]: {
...prevURLs[assetId],
references: prevURLs[assetId].references + 1,
},
};
} else {
// Create url if the asset doesn't have a url
const url = URL.createObjectURL(
new Blob([asset.file], { type: asset.mime })
);
return {
...prevURLs,
[assetId]: { url, id: assetId, references: 1 },
};
}
});
function updateAssetURL() {
function increaseReferences(prevURLs) {
return {
...prevURLs,
[assetId]: {
...prevURLs[assetId],
references: prevURLs[assetId].references + 1,
},
};
}
function createURL(prevURLs, asset) {
const url = URL.createObjectURL(
new Blob([asset.file], { type: asset.mime })
);
return {
...prevURLs,
[assetId]: { url, id: assetId, references: 1 },
};
}
setAssetURLs((prevURLs) => {
if (assetId in prevURLs) {
// Check if the asset url is already added and increase references
return increaseReferences(prevURLs);
} else {
getAsset(assetId).then((asset) => {
if (!asset) {
return;
}
setAssetURLs((prevURLs) => {
if (assetId in prevURLs) {
// Check again if it exists
return increaseReferences(prevURLs);
} else {
// Create url if the asset doesn't have a url
return createURL(prevURLs, asset);
}
});
});
return prevURLs;
}
});
}
updateAssetURL();
@ -307,7 +324,7 @@ export function useDataURL(
if (!data) {
return;
}
async function loadAssetId() {
function loadAssetId() {
if (data.type === "default") {
setAssetId(data.key);
} else {