"use strict";

const assert = require("assert");
const capitalize = require("capitalize");

const pickBestOption = require("./pick-best-option");
const mapManufacturer = require("./map-manufacturer");
const normalizeString = require("./normalize-string");
const syncpipe = require("syncpipe");

function fixCasing(name) {
	let normalized = normalizeString(name);

	// NOTE: We ignore <= 4 character manufacturer names, as those are likely to be abbreviations, and therefore should remain all-uppercase
	if (normalized.length > 4 && normalized === normalized.toUpperCase()) {
		// String is in all-caps
		return capitalize.words(normalized);
	} else {
		return normalized;
	}
}

module.exports = function createDatasheet(api, data) {
	let { createItem, mergeItem } = api;

	let url = normalizeString(data.url);
	
	if (url != null) {
		let productID = normalizeString(data.productID);
		let model = normalizeString(data.name);
		let description = normalizeString(data.description);
		let source = data.source;
		let priority = data.priority;
		let manufacturer = normalizeString(data.manufacturer);
		
		assert(manufacturer != null);
		assert(model != null);

		let mappedManufacturer = syncpipe(manufacturer, [
			(_) => (data.fixCasing === true)
				? fixCasing(_)
				: _,
			(_) => mapManufacturer(_)
		]);

		let mappedID = `datasheet:${mappedManufacturer}:${model}`;
		let unmappedID = `datasheet:${manufacturer}:${model}`;

		createItem({
			id: mappedID,
			update: (data) => pickBestOption(data, {
				priority: priority,
				source: source,
				manufacturer: mappedManufacturer,
				productID: productID,
				name: model,
				description: description,
				url: url
			}) 
		});

		if (mappedID !== unmappedID) {
			// NOTE: This is to get rid of items which were created before a mapping for that manufacturer existed; it essentially removes and redirects the old name into the new, normalized name.
			mergeItem({
				from: unmappedID,
				into: mappedID,
				merge: (into, from) => pickBestOption(from, into)
			});
		}
	}
};