namespace services.concept
{
	
	/**
	 */
	export function get
	(
		concept_id : int
	) : Promise<entities.concept>
	{
		return repositories.concept.read(concept_id);
	}
	
	
	/**
	 */
	export async function suck
	(
		concept_thing : any
	) : Promise<int>
	{
		const type_id : int = await services.type.give(concept_thing["type"]);
		const concept_id : int = await repositories.concept_core.create
		(
			{
				"type_id": type_id,
				"description": concept_thing["description"],
			}
		);
		await concept_thing["tags"].map
		(
			async (tag_value) =>
			{
				const tag_id : int = await services.tag.give(tag_value);
				const concept_tag_id : int = await repositories.concept_tags.create
				(
					{
						"concept_id": concept_id,
						"tag_id": tag_id,
					}
				);
				return concept_tag_id;
			}
		);
		await Object.keys(concept_thing["translations"]).map
		(
			async (language_value) =>
			{
				const language_id : int = await services.language.give(language_value);
				const concept_translation_ids = await concept_thing["translations"][language_value].map
				(
					async (translation_value) =>
					{
						const concept_translation_id : int = await repositories.concept_translations.create
						(
							{
								"concept_id": concept_id,
								"language_id": language_id,
								"value": translation_value,
							}
						);
					}
				);
			}
		);
		return concept_id;
	}
	
	
	/**
	 */
	function parse_tags(
		tags_raw : string
	) : Array<string>
	{
		return (
			(tags_raw === null)
			? []
			: tags_raw.split(",")
		);
	}
	
	
	/**
	 */
	function parse_translations
	(
		translations_raw : string
	) : Array<{id : int; language : string; value : string;}>
	{
		let result : Array<{id : int; language : string; value : string;}> = [];
		const parts : Array<string> = translations_raw.split(",")
		parts.forEach
		(
			(part) =>
			{
				const [id, language, value] : Array<string> = part.split(":", 3);
				result.push({"id": parseInt(id), "language": language, "value": value});
			}
		);
		return result;
	}
	
	
	/**
	 */
	export function get_translations
	(
		language_from : string,
		language_to : string,
		part : string
	) : Promise<Array<type_row>>
	{
		return repositories.concept.get_translations
		(
			language_from,
			language_to,
			part
		);
	}
	
	
	/**
	 */
	export async function export_
	(
	) : Promise<Array<{id : int; type : string; description : string; tags : Array<string>; translations : Array<{id : int; language : string; value : string;}>;}>>
	{
		return (
			repositories.concept.export()
			.then
			(
				rows => Promise.resolve
				(
					rows.map
					(
						(row) => (
							{
								"id": row["id"],
								"type": row["type"],
								"description": row["description"],
								"tags": parse_tags(row["tags"]),
								"translations": parse_translations(row["translations"]),
							}
						)
					)
				)
			)
		)
	}

	
	/**
	 */
	export function search
	(
		part : string
	) : Promise<Array<{id : int; type : string; description : string; tags : Array<string>; translations : Array<{id : int; language : string; value : string;}>;}>>
	{
		return (
			repositories.concept.search(part)
			.then
			(
				rows => Promise.resolve
				(
					rows.map
					(
						(row) => (
							{
								"id": row["id"],
								"type": row["type"],
								"description": row["description"],
								"tags": parse_tags(row["tags"]),
								"translations": parse_translations(row["translations"]),
							}
						)
					)
				)
			)
		)
	}
	
}