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const DB_TEMPLATE_LIST_HEADER = `
<table class="table table-striped">
  <thead>
    <tr>
      <th>Json</th>
    </tr>
  </thead>
  <tbody>
`;
const DB_TEMPLATE_LIST_ENTRY = `
<tr class="db-row">
  <td class="db-cell" data-key="date">##timeadded##</td>
  <td class="db-cell" data-key="coach">##user##</td>
  <td class="db-cell" data-key="json">[[Json]]</td>
</tr>
`;
const DB_TEMPLATE_LIST_FOOTER = `
 </tbody>
</table>
`;

class DB {
	constructor(id) {
		this.id = id;
	}

	async fetchEntries(params) {
		return loadFromDatabaseActivity(this.id, params)
	}

	async saveEntry(json) {
		return addEntryToDatabaseActivity(this.id, json);
	}
}

async function loadFromDatabaseActivity(id, params) {
	let dbUrl = `${window.location.origin}/mod/data/view.php?id=${id}&mode=list&perpage=1000`;
	// TODO(muhq): Why does this not include entries?
	if (params) {
		dbUrl += "&filter=1&advanced=1";
		for (const param in params) {
			dbUrl += `&${param}=${encodeURIComponent(params[param])}`
		}
	}

	const dbRes = await fetch(encodeURI(dbUrl));
	const dbDoc = new DOMParser().parseFromString(await dbRes.text(), 'text/html');
	let data = [];
	dbDoc.querySelectorAll('.db-row').forEach(row => {
		let entry = {};
		row.querySelectorAll('.db-cell').forEach(field => {
			const key = field.dataset.key;
			const value = field.innerText.trim();
			entry[key] = value;
		});
		data.push(entry);
	});
	return data;
}

async function addEntryToDatabaseActivity(id, json) {
	const url = `/mod/data/edit.php?id=${id}`;
	const editRes = await fetch(url);
	const editDoc = new DOMParser().parseFromString(await editRes.text(), 'text/html');
	const form = editDoc.querySelector('div[role="main"] > form');

	const formData = new FormData(form);

	for (const key in formData.keys()) {
		if (k.startsWith("field_")) {
			formData.set(key, json);
			// We found our json key
			break;
		}
	}
	formData.set("saveandview", "Speichern");

	return await fetch("/mod/data/edit.php", {
		method: "POST",
		// Set the FormData instance as the request body
		body: formData,
	});
}

export { DB, loadFromDatabaseActivity, addEntryToDatabaseActivity };