package eu.kanade.tachiyomi.source

import eu.kanade.tachiyomi.source.model.Page
import eu.kanade.tachiyomi.source.model.SChapter
import eu.kanade.tachiyomi.source.model.SManga
import eu.kanade.tachiyomi.util.awaitSingle
import rx.Observable

/**
 * A basic interface for creating a source. It could be an online source, a local source, etc.
 */
interface Source {

    /**
     * ID for the source. Must be unique.
     */
    val id: Long

    /**
     * Name of the source.
     */
    val name: String

    val lang: String
        get() = ""

    /**
     * Get the updated details for a manga.
     *
     * @param manga the manga to update.
     */
    @Suppress("DEPRECATION")
    suspend fun getMangaDetails(manga: SManga): SManga {
        return fetchMangaDetails(manga).awaitSingle()
    }

    /**
     * Get all the available chapters for a manga.
     *
     * @param manga the manga to update.
     */
    @Suppress("DEPRECATION")
    suspend fun getChapterList(manga: SManga): List<SChapter> {
        return fetchChapterList(manga).awaitSingle()
    }

    /**
     * Get the list of pages a chapter has. Pages should be returned
     * in the expected order; the index is ignored.
     *
     * @param chapter the chapter.
     */
    @Suppress("DEPRECATION")
    suspend fun getPageList(chapter: SChapter): List<Page> {
        return fetchPageList(chapter).awaitSingle()
    }

    /**
     * Returns an observable with the updated details for a manga.
     *
     * @param manga the manga to update.
     */
    @Deprecated(
        "Use the non-RxJava API instead",
        ReplaceWith("getMangaDetails"),
    )
    fun fetchMangaDetails(manga: SManga): Observable<SManga> = throw IllegalStateException(
        "Not used",
    )

    /**
     * Returns an observable with all the available chapters for a manga.
     *
     * @param manga the manga to update.
     */
    @Deprecated(
        "Use the non-RxJava API instead",
        ReplaceWith("getChapterList"),
    )
    fun fetchChapterList(manga: SManga): Observable<List<SChapter>> = throw IllegalStateException(
        "Not used",
    )

    /**
     * Returns an observable with the list of pages a chapter has. Pages should be returned
     * in the expected order; the index is ignored.
     *
     * @param chapter the chapter.
     */
    @Deprecated(
        "Use the non-RxJava API instead",
        ReplaceWith("getPageList"),
    )
    fun fetchPageList(chapter: SChapter): Observable<List<Page>> = Observable.empty()
}