src/components/tasks/GanttChart.vue

@@ -5,10 +5,9 @@
 	/>
 	<div ref="ganttContainer" class="gantt-container" v-else>
 		<GGanttChart
-			:date-format="DAYJS_ISO_DATE_FORMAT"
-			:chart-start="isoToKebabDate(filters.dateFrom)"
-			:chart-end="isoToKebabDate(filters.dateTo)"
-			precision="day"
+			:chart-start="dateFromDate"
+			:chart-end="dateToDate"
+			:precision="ganttChartPrecision"
 			bar-start="startDate"
 			bar-end="endDate"
 			:grid="true"
@@ -40,15 +39,9 @@
 <script setup lang="ts">
 import {computed, ref, watch, toRefs, onActivated} from 'vue'
 import {useRouter} from 'vue-router'
-
 import {getHexColor} from '@/models/task'
-
 import {colorIsDark} from '@/helpers/color/colorIsDark'
-import {isoToKebabDate} from '@/helpers/time/isoToKebabDate'
-import {parseKebabDate} from '@/helpers/time/parseKebabDate'
-
 import type {ITask, ITaskPartialWithId} from '@/modelTypes/ITask'
-import type {DateISO} from '@/types/DateISO'
 import type {GanttFilters} from '@/views/project/helpers/useGanttFilters'
 
 import {
@@ -66,12 +59,10 @@ export interface GanttChartProps {
 	isLoading: boolean,
 	filters: GanttFilters,
 	tasks: Map<ITask['id'], ITask>,
-	defaultTaskStartDate: DateISO
-	defaultTaskEndDate: DateISO
+	defaultTaskStartDate: Date
+	defaultTaskEndDate: Date
 }
 
-const DAYJS_ISO_DATE_FORMAT = 'YYYY-MM-DD'
-
 const props = defineProps<GanttChartProps>()
 
 const emit = defineEmits<{
@@ -93,16 +84,28 @@ const dateFromDate = computed(() => new Date(new Date(filters.value.dateFrom).se
 const dateToDate = computed(() => new Date(new Date(filters.value.dateTo).setHours(23,59,0,0)))
 
 const DAY_WIDTH_PIXELS = 30
+const DAY_HOUR_PRECISION_THRESHOLD = 5
+
 const ganttChartWidth = computed(() => {
 
 	const ganttContainerReference = ganttContainer?.value
 	const ganttContainerWidth = ganttContainerReference ? (ganttContainerReference['clientWidth'] ?? 0) : 0
 
 	const dateDiff = Math.floor((dateToDate.value.valueOf() - dateFromDate.value.valueOf()) / MILLISECONDS_A_DAY)
-	const calculatedWidth = dateDiff * DAY_WIDTH_PIXELS
+
+	let calculatedWidth = dateDiff * DAY_WIDTH_PIXELS
+
+	if(dateDiff < DAY_HOUR_PRECISION_THRESHOLD) {
+		calculatedWidth *= 24
+	}
 
 	return (calculatedWidth > ganttContainerWidth) ? calculatedWidth + 'px' : '100%'
+})
 
+const ganttChartPrecision = computed(() => {
+	const dateDiff = Math.floor((dateToDate.value.valueOf() - dateFromDate.value.valueOf()) / MILLISECONDS_A_DAY)
+
+	return dateDiff < DAY_HOUR_PRECISION_THRESHOLD ? 'hour' : 'day'
 })
 
 const ganttBars = ref<GanttBarObject[][]>([])
@@ -121,9 +124,10 @@ watch(
 
 function transformTaskToGanttBar(t: ITask) {
 	const black = 'var(--grey-800)'
+
 	return [{
-		startDate: isoToKebabDate(t.startDate ? t.startDate.toISOString() : props.defaultTaskStartDate),
-		endDate: isoToKebabDate(t.endDate ? t.endDate.toISOString() : props.defaultTaskEndDate),
+		startDate: t.startDate ?? props.defaultTaskStartDate,
+		endDate: t.endDate ?? props.defaultTaskEndDate,
 		ganttBarConfig: {
 			id: String(t.id),
 			label: t.title,
@@ -143,10 +147,32 @@ async function updateGanttTask(e: {
 	e: MouseEvent;
 	datetime?: string | undefined;
 }) {
+
+	const taskId = Number(e.bar.ganttBarConfig.id)
+	const task = tasks.value.get(taskId)
+
+	const startDate: Date = new Date(e.bar.startDate)
+	const endDate: Date = new Date(e.bar.endDate)
+
+	if(task && ganttChartPrecision.value == 'day') {
+
+		if(task.startDate) {
+			startDate.setHours(task.startDate.getHours(), task.startDate.getMinutes(), task.startDate.getSeconds())
+		} else {
+			startDate.setHours(0,0,0)
+		}
+
+		if(task.endDate) {
+			endDate.setHours(task.endDate.getHours(), task.endDate.getMinutes(), task.endDate.getSeconds())
+		} else {
+			endDate.setHours(23,59,59)
+		}
+	}
+
 	emit('update:task', {
-		id: Number(e.bar.ganttBarConfig.id),
-		startDate: new Date(parseKebabDate(e.bar.startDate).setHours(0,0,0,0)),
-		endDate: new Date(parseKebabDate(e.bar.endDate).setHours(23,59,0,0)),
+		id: Number(taskId),
+		startDate: startDate,
+		endDate: endDate,
 	})
 }
 

src/constants/date.ts

@@ -1,4 +1,5 @@
 export const DATEFNS_DATE_FORMAT_KEBAB = 'yyyy-LL-dd'
+export const DATEFNS_DATETIME_FORMAT_KEBAB = 'yyyy-LL-dd HH:mm'
 
 export const SECONDS_A_MINUTE = 60
 export const SECONDS_A_HOUR = SECONDS_A_MINUTE * 60

src/helpers/time/isoToKebabDate.ts

@@ -1,5 +1,5 @@
 import type {DateISO} from '@/types/DateISO'
-import type {DateKebab} from '@/types/DateKebab'
+import type {DateKebab, TimeKebab} from '@/types/DateKebab'
 
 // ✅ Format a date to YYYY-MM-DD (or any other format)
 function padTo2Digits(num: number) {
@@ -13,4 +13,16 @@ export function isoToKebabDate(isoDate: DateISO) {
 		padTo2Digits(date.getMonth() + 1), // January is 0, but we want it to be 1
 		padTo2Digits(date.getDate()),
 	].join('-') as DateKebab
+}
+
+export function isoToKebabTime(isoDate: DateISO) {
+	const date = new Date(isoDate)
+	return [
+		date.getFullYear(),
+		padTo2Digits(date.getMonth() + 1), // January is 0, but we want it to be 1
+		padTo2Digits(date.getDate()),
+	].join('-') + ' ' + [
+		padTo2Digits(date.getHours()), // January is 0, but we want it to be 1
+		padTo2Digits(date.getMinutes()),
+	].join(':') as TimeKebab
 }

src/helpers/time/parseKebabDate.ts

@@ -1,7 +1,11 @@
 import {parse} from 'date-fns'
-import {DATEFNS_DATE_FORMAT_KEBAB} from '@/constants/date'
-import type {DateKebab} from '@/types/DateKebab'
+import {DATEFNS_DATE_FORMAT_KEBAB, DATEFNS_DATETIME_FORMAT_KEBAB} from '@/constants/date'
+import type {DateKebab, TimeKebab} from '@/types/DateKebab'
 
 export function parseKebabDate(date: DateKebab): Date {
 	return parse(date, DATEFNS_DATE_FORMAT_KEBAB, new Date())
+}
+
+export function parseKebabDateTime(date: TimeKebab): Date {
+	return parse(date, DATEFNS_DATETIME_FORMAT_KEBAB, new Date())
 }

src/types/DateKebab.ts

@@ -2,3 +2,8 @@
 * Date in Format 2022-12-10
 */
 export type DateKebab = `${string}-${string}-${string}`
+
+/**
+* Date in Format 2022-12-10 00:00
+*/
+export type TimeKebab = `${string}-${string}-${string} ${string}:${string}`

src/views/project/ProjectGantt.vue

@@ -65,7 +65,6 @@ import {createAsyncComponent} from '@/helpers/createAsyncComponent'
 import {useGanttFilters} from './helpers/useGanttFilters'
 import {RIGHTS} from '@/constants/rights'
 
-import type {DateISO} from '@/types/DateISO'
 import type {ITask} from '@/modelTypes/ITask'
 
 type Options = Flatpickr.Options.Options
@@ -91,12 +90,12 @@ const {
 const DEFAULT_DATE_RANGE_DAYS = 7
 
 const today = new Date()
-const defaultTaskStartDate: DateISO = new Date(today.setHours(0, 0, 0, 0)).toISOString()
-const defaultTaskEndDate: DateISO = new Date(new Date(
+const defaultTaskStartDate: Date = new Date(today.setHours(0, 0, 0, 0))
+const defaultTaskEndDate: Date = new Date(new Date(
 	today.getFullYear(),
 	today.getMonth(),
 	today.getDate() + DEFAULT_DATE_RANGE_DAYS,
-).setHours(23, 59, 0, 0)).toISOString()
+).setHours(23, 59, 0, 0))
 
 async function addGanttTask(title: ITask['title']) {
 	return await addTask({