<script>
	import {Meteor} from "meteor/meteor";
	import {onMount} from "svelte";
	import {Sites} from "../api/sites";
	import GridTable from "./GridTable.svelte";
	import {writable} from "svelte/store";
	import TextField from '@smui/textfield';
	import HelperText from '@smui/textfield/helper-text';
	import {Students} from "../api/students";
	import {Staff} from "../api/staff";
	import {AssetTypes} from "../api/asset-types";

	onMount(async () => {
		Meteor.subscribe('sites');
		Meteor.subscribe('assetTypes');
	});

	// Should not be needed now.  Did not work well - had a bug somewhere.
	// const fixRecords = () => {Meteor.call("admin.fixRecords");}

	const siteColumns = [
		{
			key: "_id",
			title: "ID",
			value: v => v._id,
			minWidth: 20,
			weight: 1,
			cls: "id",
		}, {
			key: "name",
			title: "Name",
			value: v => v.name,
			minWidth: 100,
			weight: 1,
			cls: "name",
		},
	];
	const actions = {
		title: "Actions",
		headerWidgets: [
			{icon: "add_box", action: () => {editedSite.set({name: ""});}, tooltip: "Add a new Site."}
		],
		rowWidgets: [
			{icon: "add_circle", action: (v) => {editedSite.set(v)}},
			{icon: "delete", action: (v) => {deleteSite(v)}}
		],
	};
	const deleteSite = site => {
		//TODO:
	};
	// Create a holder for the site being edited.  This allows us to clear the editor when the user finishes, and allows the table or parent view to setup the editor.
	let editedSite = writable(null);
	let dirtySite = null;
	// Copy the edited site when ever it changes, set some defaults for a new site object (to make the view happy).
	editedSite.subscribe(site => {dirtySite = Object.assign({name: ""}, site)});
	// Load the sites (reactive).
	let sites = Sites.find({});
	const applySiteChanges = () => {
		if(dirtySite._id)
			Meteor.call("sites.update", dirtySite._id, dirtySite.name);
		else
			Meteor.call("sites.add", dirtySite.name);
		editedSite.set(null);
	}
	const rejectSiteChanges = () => {
		editedSite.set(null);
	}
	let selectedSite = null;
	
	let students = null;
	let staff = null;
	$: {
		if(selectedSite) {
			Meteor.subscribe('students', selectedSite._id);
			Meteor.subscribe('staff', selectedSite._id);
			students = Students.find({siteId: selectedSite._id});
			staff = Staff.find({siteId: selectedSite._id});
		}
	}
	const onSiteSelection = (e) => {
		selectedSite = Sites.findOne({_id: e.detail});
	}

	const uploadStudents = () => {
		// console.log(files);
		// console.log(selectedSite);
		// console.log(selectedSite._id);
		if(files && files.length) {
			let file = files[0];
			let reader = new FileReader();
			reader.onload = (e) => {
				// console.log("Sending Data");
				// console.log(selectedSite._id);
				// console.log(reader.result);
				Meteor.call('students.loadCsv', reader.result, selectedSite._id);
			}
			reader.readAsText(file, "UTF-8");
		}
	}
	let files;

	const studentColumns = [
		{
			key: "_id",
			title: "ID",
			value: v => v._id,
			minWidth: 20,
			weight: 1,
			cls: "id",
		}, {
			key: "email",
			title: "Email",
			value: v => v.email,
			minWidth: 100,
			weight: 1,
			cls: "email",
		}, {
			key: "firstName",
			title: "First Name",
			value: v => v.firstName,
			minWidth: 100,
			weight: 1,
			cls: "firstName",
		}, {
			key: "lastName",
			title: "Last Name",
			value: v => v.lastName,
			minWidth: 100,
			weight: 1,
			cls: "lastName",
		}, {
			key: "grade",
			title: "Grade",
			value: v => v.grade,
			minWidth: 100,
			weight: 1,
			cls: "grade",
		},
	];
	let editedStudent = writable(null);
	const onStudentSelection = (e) => {

	}

	const staffColumns = [
		{
			key: "_id",
			title: "ID",
			value: v => v._id,
			minWidth: 20,
			weight: 1,
			cls: "id",
		}, {
			key: "email",
			title: "Email",
			value: v => v.email,
			minWidth: 100,
			weight: 1,
			cls: "email",
		}, {
			key: "firstName",
			title: "First Name",
			value: v => v.firstName,
			minWidth: 100,
			weight: 1,
			cls: "firstName",
		}, {
			key: "lastName",
			title: "Last Name",
			value: v => v.lastName,
			minWidth: 100,
			weight: 1,
			cls: "lastName",
		},
	];
	let editedStaff = writable(null);
	const onStaffSelection = (e) => {

	}

	const assetTypesColumns = [
		{
			key: "_id",
			title: "ID",
			value: v => v._id,
			minWidth: 20,
			weight: 1,
			cls: "id",
		}, {
			key: "name",
			title: "Name",
			value: v => v.name,
			minWidth: 100,
			weight: 1,
			cls: "name",
		}, {
			key: "description",
			title: "Description",
			value: v => v.description,
			minWidth: 100,
			weight: 1,
			cls: "description",
		},
	];
	const assetTypesActions = {
		title: "Actions",
		headerWidgets: [
			{icon: "add_box", action: () => {editedAssetType.set({name: ""});}, tooltip: "Add a new asset type."}
		],
		rowWidgets: [
			{icon: "add_circle", action: (v) => {editedAssetType.set(v)}},
			{icon: "delete", action: (v) => {deleteAssetType(v)}}
		],
	};
	let editedAssetType = writable(null);
	const onAssetTypeSelection = (e) => {
	}
	let dirtyAssetType = null;
	// Copy the edited value when ever it changes, set some defaults for a new value object (to make the view happy).
	editedAssetType.subscribe(v => {dirtyAssetType = Object.assign({name: "", description: ""}, v)});
	// Load the sites (reactive).
	let assetTypes = AssetTypes.find({});
	const deleteAssetType = assetType => {
		//TODO:
	};
	const applyAssetTypeChanges = () => {
		if(dirtyAssetType._id)
			Meteor.call("assetTypes.update", dirtyAssetType._id, dirtyAssetType.name, dirtyAssetType.description);
		else
			Meteor.call("assetTypes.add", dirtyAssetType.name, dirtyAssetType.description);
		editedAssetType.set(null);
	}
	const rejectAssetTypeChanges = () => {
		editedSite.set(null);
	}
</script>

<div class="container">
	<h2>Sites</h2>
	<GridTable bind:rows={sites} columns="{siteColumns}" actions="{actions}" rowKey="{(v) => {return v._id}}" bind:edited="{editedSite}" on:selection={onSiteSelection}>
		{#if dirtySite}
			<div class="editorContainer">
				<div style="grid-column: 1/span 1">
					<TextField type="text" style="width: 100%" bind:value={dirtySite.name} label="Name">
						<HelperText slot="helper">Provide a unique name for the site.</HelperText>
					</TextField>
				</div>

				<button type="button" style="grid-column: 2/span 1;" class="button accept-button material-icons material-symbols-outlined" on:click={applySiteChanges}>
					check
				</button>
				<button type="button" style="grid-column: 3/span 1;" class="button reject-button material-icons material-symbols-outlined" on:click={rejectSiteChanges}>
					close
				</button>
			</div>
		{/if}
	</GridTable>

	{#if selectedSite}
		<h2>Site Students</h2>
		<form on:submit|preventDefault={uploadStudents}>
			<input style="display: inline-block" type="file" multiple="false" accept="text/csv" bind:files={files}/>
			<input type="submit" value="Upload"/>
		</form>
		<GridTable bind:rows={students} columns="{studentColumns}" actions="{null}" rowKey="{(v) => {return v._id}}" bind:edited="{editedStudent}" on:selection={onStudentSelection}>
			{#if dirtySite}
				<div class="editorContainer">
					<div style="grid-column: 1/span 1">
						<TextField type="text" style="width: 100%" bind:value={dirtySite.name} label="Name">
							<HelperText slot="helper">Provide a unique name for the site.</HelperText>
						</TextField>
					</div>

					<button type="button" style="grid-column: 2/span 1;" class="button accept-button material-icons material-symbols-outlined" on:click={applySiteChanges}>
						check
					</button>
					<button type="button" style="grid-column: 3/span 1;" class="button reject-button material-icons material-symbols-outlined" on:click={rejectSiteChanges}>
						close
					</button>
				</div>
			{/if}
		</GridTable>

		<h2>Site Staff</h2>
		<GridTable bind:rows={staff} columns="{staffColumns}" actions="{null}" rowKey="{(v) => {return v._id}}" bind:edited="{editedStaff}" on:selection={onStaffSelection}>
			{#if dirtySite}
				<div class="editorContainer">
					<div style="grid-column: 1/span 1">
						<TextField type="text" style="width: 100%" bind:value={dirtySite.name} label="Name">
							<HelperText slot="helper">Provide a unique name for the site.</HelperText>
						</TextField>
					</div>

					<button type="button" style="grid-column: 2/span 1;" class="button accept-button material-icons material-symbols-outlined" on:click={applySiteChanges}>
						check
					</button>
					<button type="button" style="grid-column: 3/span 1;" class="button reject-button material-icons material-symbols-outlined" on:click={rejectSiteChanges}>
						close
					</button>
				</div>
			{/if}
		</GridTable>
	{/if}
	
	<h2>Asset Types</h2>
	<GridTable bind:rows={assetTypes} columns="{assetTypesColumns}" actions="{assetTypesActions}" rowKey="{(v) => {return v._id}}" bind:edited="{editedAssetType}" on:selection={onAssetTypeSelection}>
		{#if dirtyAssetType}
			<div class="editorContainer">
				<div style="grid-column: 1/span 1">
					<TextField type="text" style="width: 100%" bind:value={dirtyAssetType.name} label="Name">
						<HelperText slot="helper">Provide a unique name for the asset type.</HelperText>
					</TextField>
					<TextField type="text" style="width: 100%" bind:value={dirtyAssetType.description} label="Description">
						<HelperText slot="helper">A detailed description.</HelperText>
					</TextField>
				</div>

				<button type="button" style="grid-column: 2/span 1;" class="button accept-button material-icons material-symbols-outlined" on:click={applyAssetTypeChanges}>check</button>
				<button type="button" style="grid-column: 3/span 1;" class="button reject-button material-icons material-symbols-outlined" on:click={rejectAssetTypeChanges}>close</button>
			</div>
		{/if}
	</GridTable>
	<!--{#each sites as site}-->
	<!--	<div>{site.name}</div>-->
	<!--{/each}-->
<!--	<button type="button" on:click={fixRecords}>Fix Records</button>-->
</div>

<style>
	form {
		margin: 0;
	}
	.editorContainer {
		display: grid;
        grid-template-columns: minmax(10px, 1fr) minmax(3rem, 3rem) minmax(3rem, 3rem);
	}
	.accept-button, .reject-button {
		font-size: .8rem;
        padding: .6rem;
        margin: auto;
        color: white;
        border-radius: 50%;
        border: 0;
        font-weight: 800;
		alignment: center;
		cursor: pointer;
	}
    .accept-button {
	    background-color: rgba(61, 148, 61, 0.91);
    }
    .reject-button {
	    background-color: rgba(176, 64, 64, 0.61);
    }
    .accept-button:hover {
        background-color: rgb(61, 148, 61);
    }
	.reject-button:hover {
        background-color: rgb(176, 64, 64);
    }
</style>
