current init

frontend/src/components/YearPicker.vue

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+<script setup>
+import { computed } from 'vue'
+
+const props = defineProps({
+  modelValue: { type: Array, default: () => [] },
+})
+
+const emit = defineEmits(['update:modelValue'])
+
+const monthNames = ['Jan', 'Feb', 'Mär', 'Apr', 'Mai', 'Jun', 'Jul', 'Aug', 'Sep', 'Okt', 'Nov', 'Dez']
+
+function buildCells(startIndex, count) {
+  const now = new Date()
+  const currentMonth = now.getMonth()
+  const currentYear = now.getFullYear()
+  const result = []
+
+  let row = 2
+  let col = 2
+
+  for (let i = 0; i < count; i++) {
+    const idx = startIndex + i
+    const m = (currentMonth + idx) % 12
+    const y = currentYear + Math.floor((currentMonth + idx) / 12)
+    const daysInMonth = new Date(y, m + 1, 0).getDate()
+    const firstDayOffset = (new Date(y, m, 1).getDay() + 6) % 7
+
+    result.push({
+      type: 'label',
+      name: monthNames[m],
+      row,
+      col: 1,
+      key: `label-${y}-${m}`,
+    })
+
+    if (i === 0) {
+      row++
+      col = 2 + firstDayOffset
+    } else {
+      const newCol = 2 + firstDayOffset
+      if (newCol < col) {
+        row++
+      }
+      col = newCol
+    }
+
+    for (let d = 1; d <= daysInMonth; d++) {
+      result.push({
+        type: 'day',
+        month: m + 1,
+        day: d,
+        row,
+        col,
+        key: `d-${y}-${m}-${d}`,
+      })
+      col++
+      if (col > 8) {
+        col = 2
+        row++
+      }
+    }
+  }
+
+  return result
+}
+
+const totalMonths = 12 - new Date().getMonth()
+const leftCount = Math.ceil(totalMonths / 2)
+const rightCount = totalMonths - leftCount
+
+const leftCells = computed(() => buildCells(0, leftCount))
+const rightCells = computed(() => buildCells(leftCount, rightCount))
+
+function isSelected(month, day) {
+  return props.modelValue.some(yd => yd.month === month && yd.day === day)
+}
+
+function toggle(month, day) {
+  const current = [...props.modelValue]
+  const index = current.findIndex(yd => yd.month === month && yd.day === day)
+  if (index === -1) {
+    current.push({ month, day })
+  } else {
+    current.splice(index, 1)
+  }
+  emit('update:modelValue', current)
+}
+</script>
+
+<template>
+  <div class="year-picker-columns">
+    <div v-for="(cells, side) in [leftCells, rightCells]" :key="side" class="year-picker">
+      <div class="header" style="grid-row:1;grid-column:1"></div>
+      <div class="weekday-header" style="grid-row:1;grid-column:2">Mo</div>
+      <div class="weekday-header" style="grid-row:1;grid-column:3">Di</div>
+      <div class="weekday-header" style="grid-row:1;grid-column:4">Mi</div>
+      <div class="weekday-header" style="grid-row:1;grid-column:5">Do</div>
+      <div class="weekday-header" style="grid-row:1;grid-column:6">Fr</div>
+      <div class="weekday-header" style="grid-row:1;grid-column:7">Sa</div>
+      <div class="weekday-header" style="grid-row:1;grid-column:8">So</div>
+
+      <template v-for="cell in cells" :key="cell.key">
+        <div
+          v-if="cell.type === 'label'"
+          class="month-label"
+          :style="{ gridRow: cell.row, gridColumn: cell.col }"
+        >
+          {{ cell.name }}
+        </div>
+        <label
+          v-else
+          class="day-option"
+          :class="{ active: isSelected(cell.month, cell.day) }"
+          :style="{ gridRow: cell.row, gridColumn: cell.col }"
+        >
+          <input
+            type="checkbox"
+            :checked="isSelected(cell.month, cell.day)"
+            @change="toggle(cell.month, cell.day)"
+            class="sr-only"
+          />
+          {{ cell.day }}
+        </label>
+      </template>
+    </div>
+  </div>
+</template>
+
+<style scoped>
+.year-picker-columns {
+  display: flex;
+  gap: 1.5rem;
+  width: 100%;
+}
+
+.year-picker {
+  flex: 1;
+  display: grid;
+  grid-template-columns: 2.5rem repeat(7, 1fr);
+  gap: 2px;
+}
+
+.weekday-header {
+  font-size: 0.6rem;
+  text-align: center;
+  color: var(--text);
+  font-weight: 500;
+}
+
+.month-label {
+  font-size: 0.7rem;
+  font-weight: 600;
+  color: var(--text-h);
+  display: flex;
+  align-items: center;
+}
+
+.day-option {
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  height: 2rem;
+  border: 1px solid var(--border);
+  border-radius: 4px;
+  cursor: pointer;
+  font-size: 0.65rem;
+  color: var(--text);
+  transition: all 0.15s;
+  user-select: none;
+}
+
+.day-option.active {
+  background: var(--accent);
+  color: #fff;
+  border-color: var(--accent);
+}
+
+.sr-only {
+  position: absolute;
+  width: 1px;
+  height: 1px;
+  overflow: hidden;
+  clip: rect(0, 0, 0, 0);
+}
+</style>