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fix: fresh export URI per save (stale thumbnail), lock spot-meter + quick EV slider, honor photo GPS over device fallback

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This commit is contained in:
3dtours
2026-09-08 10:42:08 +07:00
parent 8eca31ce58
commit 358f9b0f2f
4 changed files with 150 additions and 20 deletions
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src/utils/exportEngine.ts
+24 -8
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@@ -60,9 +60,13 @@ function screenSharpenImage(image: SkImage, amount = 0.5): SkImage {
return sharpened;
}
// Fixed filename: every export overwrites the previous one, so temp files
// never accumulate in the cache directory.
const EXPORT_FILE = `${FileSystem.cacheDirectory}camrecipe_pro_last_export.jpg`;
// Unique filename per export. A fixed path made every export share one URI, and
// RN's <Image> cache (keyed by URI) then kept showing the previous photo in the
// thumbnail after a new capture overwrote the file. A fresh URI per export busts
// that cache. Previous export file is deleted after the new one is written and
// gallery-saved, so at most one stale temp file can ever exist.
let lastExportPath: string | null = null;
const nextExportFile = () => `${FileSystem.cacheDirectory}camrecipe_pro_export_${Date.now()}.jpg`;
export async function processAndExportPhoto(
sourceUri: string,
@@ -299,9 +303,12 @@ export async function processAndExportPhoto(
bytes = patchJpegDpi(bytes, options.dpi);
}
// 10. Write binary bytes to temporary local file (overwrites previous export)
// 10. Write binary bytes to a unique temporary local file. The unique name
// is load-bearing: a fixed URI would be served from RN's <Image> cache and
// the thumbnail/preview would keep showing the previous export.
const exportFile = nextExportFile();
try {
new File(EXPORT_FILE).write(bytes);
new File(exportFile).write(bytes);
} catch (e) {
console.error('Failed to write export file: ' + e);
return null;
@@ -313,8 +320,17 @@ export async function processAndExportPhoto(
const mediaPermission = await MediaLibrary.requestPermissionsAsync();
if (mediaPermission.granted) {
try {
await MediaLibrary.saveToLibraryAsync(EXPORT_FILE);
return { uri: EXPORT_FILE, savedToLibrary: true };
await MediaLibrary.saveToLibraryAsync(exportFile);
// New file is safely in the gallery — retire the previous export temp.
if (lastExportPath && lastExportPath !== exportFile) {
try {
await FileSystem.deleteAsync(lastExportPath, { idempotent: true });
} catch (e) {
console.warn('Cleanup of previous export temp failed:', e);
}
}
lastExportPath = exportFile;
return { uri: exportFile, savedToLibrary: true };
} catch (e) {
console.warn('Save to gallery failed:', e);
}
@@ -323,7 +339,7 @@ export async function processAndExportPhoto(
}
console.error(`[export] gallery-save ${Date.now() - t0}ms`);
return { uri: EXPORT_FILE, savedToLibrary: false };
return { uri: exportFile, savedToLibrary: false };
} catch (error) {
console.error('Error during photo processing and export:', error);
return null;