"use strict";

const Promise = require("bluebird");
const dlayer = require("../packages/dlayer");
const All = require("../packages/graphql-interface/symbols/all");
const loaders = require("./loaders");
const types = require("./types");

function typeFromSource(source, ids, factoryFunction) {
	return Promise.try(() => {
		if (ids != null) {
			return source.loadMany(ids);
		} else {
			return source.load(All); // FIXME: Symbol
		}
	}).then((items) => {
		return items.map((item) => factoryFunction(item));
	});
}

module.exports = function () {
	return dlayer({
		makeContext: function () {
			return {
				sources: loaders()
			};
		},
		schema: {
			hardware: {
				drives: ({ paths }, { sources }) => {
					return typeFromSource(sources.smartctlScan, paths, (device) => types.Drive({ path: device.path }));
				}
			},
			resources: {
				blockDevices: ({ names }, { sources }) => {
					return typeFromSource(sources.lsblk, names, (device) => types.BlockDevice({ name: device.name }));
				},
				lvm: {
					physicalVolumes: {
						$get: ({ paths }, { sources }) => {
							return typeFromSource(sources.lvmPhysicalVolumes, paths, (volume) => types.LVMPhysicalVolume({ path: volume.path }));
						},
						$methods: {}
					},
					volumeGroups: ({ names }, { sources }) => {
						return typeFromSource(sources.lvmVolumeGroups, names, (group) => types.LVMVolumeGroup({ name: group.name }));
					}
				},
				images: {
					installationMedia: [],
					vmImages: []
				}
			},
		}
	});
};


// let schemaTodo = {
// 	system: {
// 		hardware: { ... },
// 		lvm: {
// 			...
// 		}
// 	},
// 	resources: {
// 		storagePools: {
// 			name: "...",
// 			type: "lvm|folder",
// 			isLocal: true,
// 			folderPath: "...",
// 			lvmVolumeGroup: LVMVolumeGroup,
// 			$$update: {
// 				$arguments: {
// 					name: "..." 
// 				}
// 			},
// 			$$delete: {},
// 			$collection: {
// 				$$create: {
// 					$arguments: {
// 						name: "poolName",
// 						volumeGroup: "name",
// 						// or:
// 						folderPath: "path"
// 					}
// 					// standard fields for a storage pool entry go here, including LVMVolumeGroup resolution!
// 				}
// 			},
// 		},
// 		networkPools: { ... },
// 		storageVolumes: {
// 			id: 0,
// 			userID: 0,
// 			pool: StoragePool,
// 			poolID: 0, // the index/ID within the pool
// 			size: 0, // bytes-iec
// 		},
// 		instances: {
// 			id: 0,
// 			userID: 0,
// 			state: "running|stopped|creating",
// 			storageVolumes: StorageVolume, // in boot order

// 		}
// 	}
// };