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// Copyright 2025 Shota FUJI
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//
// SPDX-License-Identifier: Apache-2.0

import PlacKit
import os

class Zone {
	var ptr: UnsafeMutablePointer<PlacKit.plac_transport_zone>
	
	var id: String {
		return String(cString: ptr.pointee.id)
	}
	
	var name: String {
		return String(cString: ptr.pointee.name)
	}
	
	var playback: PlacKit.plac_transport_playback_state {
		return ptr.pointee.playback
	}
	
	init(ptr: UnsafeMutablePointer<PlacKit.plac_transport_zone>) {
		self.ptr = ptr
	}
	
	deinit {
		PlacKit.plac_transport_zone_release(ptr)
	}
}

class ZoneListEvent {
	let logger = Logger()
	
	var ptr: UnsafeMutablePointer<PlacKit.plac_transport_zone_list_event>
	
	var addedZones: [Zone]
	var changedZones: [Zone]
	var removedZoneIds: [String]
	
	init(ptr: UnsafeMutablePointer<PlacKit.plac_transport_zone_list_event>) {
		self.ptr = ptr
		
		var addedZones: [Zone] = []
		
		if var current = ptr.pointee.added_zones_ptr.pointee {
			for _ in 0..<ptr.pointee.added_zones_len {
				addedZones.append(Zone(ptr: PlacKit.plac_transport_zone_retain(current)))
				current = current.successor()
			}
			
			self.addedZones = addedZones
		} else {
			logger.warning("added_zones_ptr is null")
			self.addedZones = []
		}
		
		var changedZones: [Zone] = []
		
		if var current = ptr.pointee.changed_zones_ptr.pointee {
			for _ in 0..<ptr.pointee.changed_zones_len {
				changedZones.append(Zone(ptr: PlacKit.plac_transport_zone_retain(current)))
				current = current.successor()
			}
			
			self.changedZones = changedZones
		} else {
			logger.warning("changed_zones_ptr is null")
			self.changedZones = []
		}
		
		var removedZoneIds: [String] = []
		
		if var current = ptr.pointee.removed_zone_ids_ptr {
			for i in 0..<ptr.pointee.removed_zone_ids_len {
				if let strPtr = current.pointee {
					removedZoneIds.append(String(cString: strPtr))
				} else {
					logger.warning("removed_zone_ids_ptr[\(i)] is null pointer")
				}
				current = current.successor()
			}
			
			self.removedZoneIds = removedZoneIds
		} else {
			logger.warning("removed_zone_ids_ptr is null")
			self.removedZoneIds = []
		}
	}
	
	deinit {
		PlacKit.plac_transport_zone_list_event_release(ptr)
	}
}