package com.hyperling.weather

/**
 * Platform-agnostic location storage abstraction.
 */
object LocationStorage {
    /**
     * Load all saved locations.
     */
    fun load(): List<LocationEntry> = getStorage().load()
    
    /**
     * Save all locations (replaces existing).
     */
    fun save(locations: List<LocationEntry>) = getStorage().save(locations)
    
    /**
     * Save a single location, merging with existing list.
     */
    fun saveOne(location: LocationEntry) = getStorage().saveOne(location)
    
    /**
     * Delete a location by id.
     */
    fun delete(id: Long) = getStorage().delete(id)
    
    expect fun getStorage(): StorageBackend
}

interface StorageBackend {
    fun load(): List<LocationEntry>
    fun save(locations: List<LocationEntry>)
    fun saveOne(location: LocationEntry)
    fun delete(id: Long)
}

expect fun getPlatformStorage(): StorageBackend