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app/src/main/kotlin/ac/mdiq/podcini/net/feed/searcher/ItunesTopListLoader.kt
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,86 @@ | ||
| package ac.mdiq.podcini.net.feed.searcher | ||
|
|
||
| import ac.mdiq.podcini.R | ||
| import ac.mdiq.podcini.net.download.service.PodciniHttpClient.getHttpClient | ||
| import ac.mdiq.podcini.storage.model.Feed | ||
| import ac.mdiq.podcini.util.Logd | ||
| import android.content.Context | ||
| import okhttp3.CacheControl | ||
| import okhttp3.OkHttpClient | ||
| import okhttp3.Request | ||
| import org.json.JSONArray | ||
| import org.json.JSONException | ||
| import org.json.JSONObject | ||
| import java.io.IOException | ||
| import java.util.Locale | ||
| import java.util.concurrent.TimeUnit | ||
|
|
||
| class ItunesTopListLoader(private val context: Context) { | ||
|
|
||
| @Throws(JSONException::class, IOException::class) | ||
| fun loadToplist(country: String, limit: Int, subscribed: List<Feed>): List<PodcastSearchResult> { | ||
| val client = getHttpClient() | ||
| val feedString: String | ||
| var loadCountry = country | ||
| if (COUNTRY_CODE_UNSET == country) loadCountry = Locale.getDefault().country | ||
| feedString = try { getTopListFeed(client, loadCountry) | ||
| } catch (e: IOException) { if (COUNTRY_CODE_UNSET == country) getTopListFeed(client, "US") else throw e } | ||
| return removeSubscribed(parseFeed(feedString), subscribed, limit) | ||
| } | ||
|
|
||
| @Throws(IOException::class) | ||
| private fun getTopListFeed(client: OkHttpClient, country: String): String { | ||
| val url = "https://itunes.apple.com/%s/rss/toppodcasts/limit=$NUM_LOADED/explicit=true/json" | ||
| Logd(TAG, "Feed URL " + String.format(url, country)) | ||
| val httpReq: Request.Builder = Request.Builder() | ||
| .cacheControl(CacheControl.Builder().maxStale(1, TimeUnit.DAYS).build()) | ||
| .url(String.format(url, country)) | ||
| client.newCall(httpReq.build()).execute().use { response -> | ||
| if (response.isSuccessful) return response.body!!.string() | ||
| if (response.code == 400) throw IOException("iTunes does not have data for the selected country.") | ||
| val prefix = context.getString(R.string.error_msg_prefix) | ||
| throw IOException(prefix + response) | ||
| } | ||
| } | ||
|
|
||
| @Throws(JSONException::class) | ||
| private fun parseFeed(jsonString: String): List<PodcastSearchResult> { | ||
| val result = JSONObject(jsonString) | ||
| val feed: JSONObject | ||
| val entries: JSONArray | ||
| try { | ||
| feed = result.getJSONObject("feed") | ||
| entries = feed.getJSONArray("entry") | ||
| } catch (_: JSONException) { return ArrayList() } | ||
| val results: MutableList<PodcastSearchResult> = ArrayList() | ||
| for (i in 0 until entries.length()) { | ||
| val json = entries.getJSONObject(i) | ||
| results.add(PodcastSearchResult.fromItunesToplist(json)) | ||
| } | ||
| return results | ||
| } | ||
|
|
||
| companion object { | ||
| private val TAG: String = ItunesTopListLoader::class.simpleName ?: "Anonymous" | ||
| const val PREF_KEY_COUNTRY_CODE: String = "country_code" | ||
| const val PREF_KEY_HIDDEN_DISCOVERY_COUNTRY: String = "hidden_discovery_country" | ||
| const val PREF_KEY_NEEDS_CONFIRM: String = "needs_confirm" | ||
| const val PREFS: String = "CountryRegionPrefs" | ||
| const val COUNTRY_CODE_UNSET: String = "99" | ||
| private const val NUM_LOADED = 25 | ||
|
|
||
| private fun removeSubscribed(suggestedPodcasts: List<PodcastSearchResult>, subscribedFeeds: List<Feed>, limit: Int): List<PodcastSearchResult> { | ||
| val subscribedPodcastsSet: MutableSet<String> = HashSet() | ||
| for (subscribedFeed in subscribedFeeds) { | ||
| if (subscribedFeed.title != null && subscribedFeed.author != null) | ||
| subscribedPodcastsSet.add(subscribedFeed.title!!.trim { it <= ' ' } + " - " + subscribedFeed.author!!.trim { it <= ' ' }) | ||
| } | ||
| val suggestedNotSubscribed: MutableList<PodcastSearchResult> = ArrayList() | ||
| for (suggested in suggestedPodcasts) { | ||
| if (!subscribedPodcastsSet.contains(suggested.title.trim { it <= ' ' })) suggestedNotSubscribed.add(suggested) | ||
| if (suggestedNotSubscribed.size == limit) return suggestedNotSubscribed | ||
| } | ||
| return suggestedNotSubscribed | ||
| } | ||
| } | ||
| } |
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