implemented selection functions

Signed-off-by: Stephan Richter <s.richter@srsoftware.de>

frontend/src/routes/time/Index.svelte

@@ -11,6 +11,50 @@
     let times = $state(null);
     let detail = $state(null);
     let sortedTimes = $derived.by(() => Object.values(times).sort((b, a) => a.start_time.localeCompare(b.start_time)));
+    let selected = $state({});
+    let ranges = {};
+    let timeMap = $derived.by(() => {
+        let result = {
+            months : {},
+            years  : {}
+        }
+        let lastYear   = null;
+        let lastMonth  = null;
+        let yearCount  = 0;
+        let monthCount = 0;
+        let yearIndex  = 0;
+        let monthIndex = 0;
+        for (let idx in sortedTimes){
+            const time  = sortedTimes[idx];
+            const start = time.start_time;
+            const year  = start.substring(0,4);
+            const month = start.substring(5,7);
+            if (year != lastYear){
+                lastYear = year;
+                if (yearCount) result.years[yearIndex] = yearCount;
+                yearCount = 0;
+                yearIndex = idx;
+            }
+            yearCount +=1;
+            if (month != lastMonth){
+                lastMonth = month;
+                if (monthCount) result.months[monthIndex] = monthCount;
+                monthCount = 0;
+                monthIndex = idx;
+            }
+            monthCount +=1;            
+        }
+        if (yearCount)  result.years[yearIndex] = yearCount;
+        if (monthCount) result.months[monthIndex] = monthCount;
+        console.log(result);
+        return result;
+    });
+
+    function calcYearMap(){
+        let result = Object.values(times).length;
+        console.log({result:result});
+        return result;
+    }
 
     async function loadTimes(){
         const url  = api('time');
@@ -26,6 +70,26 @@
         router.navigate(`task/${tid}/view`);
     }
 
+    function toggleRange(range){
+        let affected = sortedTimes.filter(time => time.start_time.startsWith(range));
+        if (ranges[range]){
+            delete ranges[range];
+            for (let time of affected){
+                if (selected[time.id]) delete selected[time.id]
+            }
+        } else {
+            for (let time of affected) selected[time.id] = true;
+            ranges[range] = true;
+        }
+    }
+
+    function toggleSelect(time_id){
+        detail = null;
+        if (selected[time_id]) {
+            delete selected[time_id]
+        } else selected[time_id] = true;
+    }
+
     async function update(time){
         const url = api(`time/${time.id}`);
         time.start_time = time.start_time.split(':').slice(0,2).join(':');
@@ -53,6 +117,12 @@
 
 <style>
     td { vertical-align: top; }
+    .year, .month{
+        border: 1px solid;
+    }
+    .selected td:not(.year):not(.month){
+        background: navy;
+    }
 </style>
 
 <h1>{t('timetracking')}</h1>
@@ -63,6 +133,8 @@
 <table class="timetracks">
     <thead>
         <tr>
+            <th>{t('year')}</th>
+            <th>{t('month')}</th>
             <th>{t('start_end')}</th>
             <th>{t('duration')}</th>
             <th>{t('subject')}</th>
@@ -71,35 +143,44 @@
         </tr>
     </thead>
     <tbody>
-        {#each sortedTimes as time}
-        {#if detail == time.id}
-        <tr>
+        {#each sortedTimes as time,line}
+        <tr class={selected[time.id]?'selected':''}>
+            {#if timeMap.years[line]}
+            <td class="year" rowspan={timeMap.years[line]} onclick={e => toggleRange(time.start_time.substring(0,4))}>
+                {time.start_time.substring(0,4)}
+            </td>
+            {/if}
+            {#if timeMap.months[line]}
+            <td class="month" rowspan={timeMap.months[line]} onclick={e => toggleRange(time.start_time.substring(0,7))}>
+                {time.start_time.substring(5,7)}
+            </td>
+            {/if}
+            {#if detail == time.id}
             <td colspan="5">
                 <TimeEditor record={time} onSet={update} />
             </td>
-        </tr>
-        {:else}
-        <tr onclick={e => {detail = time.id}}>
-            <td class="start_end">
+            {:else}
+            <td class="start_end" onclick={e => toggleSelect(time.id)}>
                 {time.start_time}{#if time.end_time}…{time.end_time}{/if}
             </td>
-            <td class="duration">{#if time.duration}
+            <td class="duration" onclick={e => {detail = time.id}}>
+                {#if time.duration}
                 {time.duration.toFixed(3)}&nbsp;h
                 {/if}
             </td>
-            <td class="subject">
+            <td class="subject" onclick={e => {detail = time.id}}>
                 {time.subject}
             </td>
-            <td class="tasks">
+            <td class="tasks" onclick={e => {detail = time.id}}>
                 {#each Object.entries(time.tasks) as [tid,task]}
                 <a href="#" onclick={e => openTask(tid)}>{task}</a>
                 {/each}
             </td>
-            <td class="state">
+            <td class="state" onclick={e => {detail = time.id}}>
                 {t("state_"+time.state.name.toLowerCase())}
             </td>
+            {/if}
         </tr>
-        {/if}
         {/each}
     </tbody>
 </table>