feat(chart): add chart functionality with ECharts integration and update output view options

src/components/chart/QueryChart.vue

@@ -0,0 +1,167 @@
+<script setup lang="ts">
+import { ref, computed, watch } from "vue";
+import { useI18n } from "vue-i18n";
+import { use } from "echarts/core";
+import { CanvasRenderer } from "echarts/renderers";
+import { LineChart, BarChart, PieChart } from "echarts/charts";
+import { GridComponent, TooltipComponent, LegendComponent } from "echarts/components";
+import VChart from "vue-echarts";
+import { BarChart3 } from "lucide-vue-next";
+import { Button } from "@/components/ui/button";
+import { Select, SelectContent, SelectItem, SelectTrigger, SelectValue } from "@/components/ui/select";
+import type { QueryResult } from "@/types/database";
+import { useTheme } from "@/composables/useTheme";
+
+use([CanvasRenderer, LineChart, BarChart, PieChart, GridComponent, TooltipComponent, LegendComponent]);
+
+const props = defineProps<{
+  result: QueryResult;
+}>();
+
+const { t } = useI18n();
+const { isDark } = useTheme();
+
+type ChartType = "line" | "bar" | "pie";
+const chartType = ref<ChartType>("bar");
+const xColumn = ref("");
+const yColumns = ref<string[]>([]);
+
+const numericColumns = computed(() =>
+  props.result.columns.filter((_, idx) => props.result.rows.some((row) => typeof row[idx] === "number")),
+);
+
+const allColumns = computed(() => props.result.columns);
+
+watch(
+  () => props.result,
+  () => {
+    const cols = props.result.columns;
+    const numCols = numericColumns.value;
+    xColumn.value = cols.find((c) => !numCols.includes(c)) || cols[0] || "";
+    yColumns.value = numCols.length > 0 ? [numCols[0]] : [];
+  },
+  { immediate: true },
+);
+
+function toggleYColumn(col: string) {
+  const idx = yColumns.value.indexOf(col);
+  if (idx >= 0) {
+    yColumns.value = yColumns.value.filter((c) => c !== col);
+  } else {
+    yColumns.value = [...yColumns.value, col];
+  }
+}
+
+const chartOption = computed(() => {
+  const xIdx = props.result.columns.indexOf(xColumn.value);
+  if (xIdx < 0 || yColumns.value.length === 0) return null;
+
+  const xData = props.result.rows.map((row) => String(row[xIdx] ?? ""));
+
+  if (chartType.value === "pie") {
+    const yIdx = props.result.columns.indexOf(yColumns.value[0]);
+    if (yIdx < 0) return null;
+    return {
+      tooltip: { trigger: "item" },
+      legend: { bottom: 0, textStyle: { color: isDark.value ? "#ccc" : "#333" } },
+      series: [
+        {
+          type: "pie",
+          radius: ["30%", "60%"],
+          data: xData.map((name, i) => ({
+            name,
+            value: Number(props.result.rows[i][yIdx]) || 0,
+          })),
+        },
+      ],
+    };
+  }
+
+  const yIndices = yColumns.value.map((c) => props.result.columns.indexOf(c)).filter((i) => i >= 0);
+
+  return {
+    tooltip: { trigger: "axis" },
+    legend: {
+      bottom: 0,
+      textStyle: { color: isDark.value ? "#ccc" : "#333" },
+    },
+    grid: { left: 60, right: 20, top: 20, bottom: 40 },
+    xAxis: {
+      type: "category" as const,
+      data: xData,
+      axisLabel: { color: isDark.value ? "#aaa" : "#666" },
+    },
+    yAxis: {
+      type: "value" as const,
+      axisLabel: { color: isDark.value ? "#aaa" : "#666" },
+    },
+    series: yIndices.map((yIdx) => ({
+      name: props.result.columns[yIdx],
+      type: chartType.value,
+      data: props.result.rows.map((row) => Number(row[yIdx]) || 0),
+      smooth: chartType.value === "line",
+    })),
+  };
+});
+
+const hasData = computed(() => props.result.rows.length > 0 && numericColumns.value.length > 0);
+</script>
+
+<template>
+  <div class="h-full flex flex-col">
+    <div v-if="!hasData" class="flex-1 flex flex-col items-center justify-center gap-2 text-muted-foreground text-sm">
+      <BarChart3 class="h-10 w-10 opacity-30" />
+      <span>{{ t("chart.noNumericData") }}</span>
+    </div>
+    <template v-else>
+      <div class="h-9 shrink-0 border-b bg-muted/20 px-3 flex items-center gap-3 text-xs">
+        <div class="flex items-center gap-1.5">
+          <span class="text-muted-foreground">{{ t("chart.type") }}</span>
+          <div class="flex gap-0.5">
+            <Button
+              v-for="ct in ['bar', 'line', 'pie'] as ChartType[]"
+              :key="ct"
+              size="sm"
+              :variant="chartType === ct ? 'secondary' : 'ghost'"
+              class="h-6 px-2 text-xs"
+              @click="chartType = ct"
+            >
+              {{ t(`chart.${ct}`) }}
+            </Button>
+          </div>
+        </div>
+        <span class="h-4 w-px bg-border" />
+        <div class="flex items-center gap-1.5">
+          <span class="text-muted-foreground">X</span>
+          <Select :model-value="xColumn" @update:model-value="(v: any) => (xColumn = v)">
+            <SelectTrigger class="h-6 w-auto max-w-40 border-0 bg-transparent px-1 text-xs shadow-none focus:ring-0">
+              <SelectValue />
+            </SelectTrigger>
+            <SelectContent>
+              <SelectItem v-for="col in allColumns" :key="col" :value="col">{{ col }}</SelectItem>
+            </SelectContent>
+          </Select>
+        </div>
+        <span class="h-4 w-px bg-border" />
+        <div class="flex items-center gap-1.5">
+          <span class="text-muted-foreground">Y</span>
+          <div class="flex gap-0.5">
+            <Button
+              v-for="col in numericColumns"
+              :key="col"
+              size="sm"
+              :variant="yColumns.includes(col) ? 'secondary' : 'ghost'"
+              class="h-6 px-2 text-xs"
+              @click="toggleYColumn(col)"
+            >
+              {{ col }}
+            </Button>
+          </div>
+        </div>
+      </div>
+      <div class="flex-1 min-h-0 p-2">
+        <VChart v-if="chartOption" :option="chartOption" autoresize class="h-full w-full" />
+      </div>
+    </template>
+  </div>
+</template>