package jp.juggler.subwaytooter.api.entity

import android.content.ContentValues
import android.content.Intent
import android.database.Cursor
import android.os.Bundle
import jp.juggler.util.JsonObject
import jp.juggler.util.getStringOrNull
import jp.juggler.util.notZero

class EntityId(val x : String) : Comparable<EntityId> {
	
	companion object {
		
		// IDのパース失敗時にエラー扱いしたくない場合に使われる
		internal val DEFAULT = EntityId("<>default")
		
		// マストドンのアカウント作成APIで作成した直後は「IDが発行されてない」状態になる
		internal val CONFIRMING = EntityId("<>confirming")

		fun mayDefault(x : String?) = if(x == null) DEFAULT else EntityId(x)
		
		fun mayNull(x : String?) = if(x == null) null else EntityId(x)
		
		fun String.decode() : EntityId? {
			if(this.isEmpty()) return null
			// first character is 'L' for EntityIdLong, 'S' for EntityIdString.
			// integer id is removed at https://source.joinmastodon.org/mastodon/docs/commit/e086d478afa140e7b0b9a60183655315966ad9ff
			return EntityId(this.substring(1))
		}
		
		fun from(intent : Intent?, key : String) =
			intent?.getStringExtra(key)?.decode()
		
		fun from(bundle : Bundle?, key : String) =
			bundle?.getString(key)?.decode()
		
		// 内部保存データのデコード用。APIレスポンスのパースに使ってはいけない
		fun from(data : JsonObject?, key : String) : EntityId? {
			val o = data?.get(key)
			if(o is Long) return EntityId(o.toString())
			return (o as? String)?.decode()
		}
		
		fun from(cursor : Cursor, key : String) =
			cursor.getStringOrNull(key)?.decode()

	}
	
	private fun encode() : String {
		val prefix = 'S'
		return "$prefix$this"
	}
	
	fun putTo(data : Intent, key : String) : Intent = data.putExtra(key, encode())
	
	fun putTo(bundle : Bundle, key : String) = bundle.putString(key, encode())
	
	fun putTo(data : JsonObject, key : String) = data.apply {
		put(key, encode())
	}
	
	fun putTo(cv : ContentValues, key : String) {
		cv.put(key, encode())
	}
	
	val isDefault : Boolean
		get() = this == DEFAULT
	
	val notDefault : Boolean
		get() = this != DEFAULT

	val notDefaultOrConfirming : Boolean
		get() = this != DEFAULT && this != CONFIRMING
	
	override fun compareTo(other : EntityId) : Int =
		(x.length - other.x.length).notZero() ?: x.compareTo(other.x)
	
	override fun equals(other : Any?) : Boolean = if(other is EntityId) {
		x == other.x
	} else {
		false
	}
	
	override fun hashCode() = x.hashCode()
	
	override fun toString() = x
	
	fun isNewerThan(previous : EntityId?) = when(previous) {
		null -> true
		else -> this > previous
	}
}

fun EntityId?.putMayNull(cv : ContentValues, key : String) {
	if(this == null) {
		cv.putNull(key)
	} else {
		this.putTo(cv, key)
	}
}