import { CodedError, Platform, UnavailabilityError } from 'expo-modules-core';
import ExpoFontLoader from './ExpoFontLoader';
import { FontDisplay } from './Font.types';
import { getAssetForSource, loadSingleFontAsync } from './FontLoader';
import { isLoadedInCache, isLoadedNative, loadPromises, markLoaded, purgeCache, purgeFontFamilyFromCache, } from './memory';
import { registerStaticFont } from './server';
// @needsAudit
/**
 * Synchronously detect if the font for `fontFamily` has finished loading.
 *
 * @param fontFamily The name used to load the `FontResource`.
 * @return Returns `true` if the font has fully loaded.
 */
export function isLoaded(fontFamily) {
    if (Platform.OS === 'web') {
        if (typeof ExpoFontLoader.isLoaded !== 'function') {
            throw new Error(`expected ExpoFontLoader.isLoaded to be a function, was ${typeof ExpoFontLoader.isLoaded}`);
        }
        return isLoadedInCache(fontFamily) || ExpoFontLoader.isLoaded(fontFamily);
    }
    return isLoadedNative(fontFamily);
}
/**
 * Synchronously get all the fonts that have been loaded.
 * This includes fonts that were bundled at build time using the config plugin, as well as those loaded at runtime using `loadAsync`.
 *
 * @returns Returns array of strings which you can use as `fontFamily` [style prop](https://reactnative.dev/docs/text#style).
 */
export function getLoadedFonts() {
    return ExpoFontLoader.getLoadedFonts();
}
// @needsAudit
/**
 * Synchronously detect if the font for `fontFamily` is still being loaded.
 *
 * @param fontFamily The name used to load the `FontResource`.
 * @returns Returns `true` if the font is still loading.
 */
export function isLoading(fontFamily) {
    return fontFamily in loadPromises;
}
// @needsAudit
/**
 * An efficient method for loading fonts from static or remote resources which can then be used
 * with the platform's native text elements. In the browser, this generates a `@font-face` block in
 * a shared style sheet for fonts. No CSS is needed to use this method.
 *
 * > **Note**: We recommend using the [config plugin](#configuration-in-app-config) instead whenever possible.
 *
 * @param fontFamilyOrFontMap String or map of values that can be used as the `fontFamily` [style prop](https://reactnative.dev/docs/text#style)
 * with React Native `Text` elements.
 * @param source The font asset that should be loaded into the `fontFamily` namespace.
 *
 * @return Returns a promise that fulfils when the font has loaded. Often you may want to wrap the
 * method in a `try/catch/finally` to ensure the app continues if the font fails to load.
 */
export function loadAsync(fontFamilyOrFontMap, source) {
    // NOTE(EvanBacon): Static render pass on web must be synchronous to collect all fonts.
    // Because of this, `loadAsync` doesn't use the `async` keyword and deviates from the
    // standard Expo SDK style guide.
    const isServer = Platform.OS === 'web' && typeof window === 'undefined';
    if (typeof fontFamilyOrFontMap === 'object') {
        if (source) {
            return Promise.reject(new CodedError(`ERR_FONT_API`, `No fontFamily can be used for the provided source: ${source}. The second argument of \`loadAsync()\` can only be used with a \`string\` value as the first argument.`));
        }
        const fontMap = fontFamilyOrFontMap;
        const names = Object.keys(fontMap);
        if (isServer) {
            names.map((name) => registerStaticFont(name, fontMap[name]));
            return Promise.resolve();
        }
        return Promise.all(names.map((name) => loadFontInNamespaceAsync(name, fontMap[name]))).then(() => { });
    }
    if (isServer) {
        registerStaticFont(fontFamilyOrFontMap, source);
        return Promise.resolve();
    }
    return loadFontInNamespaceAsync(fontFamilyOrFontMap, source);
}
async function loadFontInNamespaceAsync(fontFamily, source) {
    if (!source) {
        throw new CodedError(`ERR_FONT_SOURCE`, `Cannot load null or undefined font source: { "${fontFamily}": ${source} }. Expected asset of type \`FontSource\` for fontFamily of name: "${fontFamily}"`);
    }
    // we consult the native module to see if the font is already loaded
    // this is slower than checking the cache but can help avoid loading the same font n times
    if (isLoaded(fontFamily)) {
        return;
    }
    if (loadPromises.hasOwnProperty(fontFamily)) {
        return loadPromises[fontFamily];
    }
    // Important: we want all callers that concurrently try to load the same font to await the same
    // promise. If we're here, we haven't created the promise yet. To ensure we create only one
    // promise in the program, we need to create the promise synchronously without yielding the event
    // loop from this point.
    const asset = getAssetForSource(source);
    loadPromises[fontFamily] = (async () => {
        try {
            await loadSingleFontAsync(fontFamily, asset);
            markLoaded(fontFamily);
        }
        finally {
            delete loadPromises[fontFamily];
        }
    })();
    await loadPromises[fontFamily];
}
// @needsAudit
/**
 * Unloads all the custom fonts. This is used for testing.
 * @hidden
 */
export async function unloadAllAsync() {
    if (!ExpoFontLoader.unloadAllAsync) {
        throw new UnavailabilityError('expo-font', 'unloadAllAsync');
    }
    if (Object.keys(loadPromises).length) {
        throw new CodedError(`ERR_UNLOAD`, `Cannot unload fonts while they're still loading: ${Object.keys(loadPromises).join(', ')}`);
    }
    purgeCache();
    await ExpoFontLoader.unloadAllAsync();
}
// @needsAudit
/**
 * Unload custom fonts matching the `fontFamily`s and display values provided.
 * This is used for testing.
 *
 * @param fontFamilyOrFontMap The name or names of the custom fonts that will be unloaded.
 * @param options When `fontFamilyOrFontMap` is a string, this should be the font source used to load
 * the custom font originally.
 * @hidden
 */
export async function unloadAsync(fontFamilyOrFontMap, options) {
    if (!ExpoFontLoader.unloadAsync) {
        throw new UnavailabilityError('expo-font', 'unloadAsync');
    }
    if (typeof fontFamilyOrFontMap === 'object') {
        if (options) {
            throw new CodedError(`ERR_FONT_API`, `No fontFamily can be used for the provided options: ${options}. The second argument of \`unloadAsync()\` can only be used with a \`string\` value as the first argument.`);
        }
        const fontMap = fontFamilyOrFontMap;
        const names = Object.keys(fontMap);
        await Promise.all(names.map((name) => unloadFontInNamespaceAsync(name, fontMap[name])));
        return;
    }
    return await unloadFontInNamespaceAsync(fontFamilyOrFontMap, options);
}
async function unloadFontInNamespaceAsync(fontFamily, options) {
    if (!isLoaded(fontFamily)) {
        return;
    }
    else {
        purgeFontFamilyFromCache(fontFamily);
    }
    // Important: we want all callers that concurrently try to load the same font to await the same
    // promise. If we're here, we haven't created the promise yet. To ensure we create only one
    // promise in the program, we need to create the promise synchronously without yielding the event
    // loop from this point.
    if (!fontFamily) {
        throw new CodedError(`ERR_FONT_FAMILY`, `Cannot unload an empty name`);
    }
    if (!ExpoFontLoader.unloadAsync) {
        throw new UnavailabilityError('expo-font', 'unloadAsync');
    }
    await ExpoFontLoader.unloadAsync(fontFamily, options);
}
export { FontDisplay };
//# sourceMappingURL=Font.js.map