feat(fc2c-i): pinia stores for showcase, tag directory, artist

frontend/src/stores/artist.js

@@ -0,0 +1,63 @@
+import { defineStore } from 'pinia'
+import { ref, computed } from 'vue'
+import { useApi } from '../composables/useApi.js'
+
+const PAGE = 60
+
+export const useArtistStore = defineStore('artist', () => {
+  const api = useApi()
+  const overview = ref(null)
+  const images = ref([])
+  const nextCursor = ref(null)
+  const loading = ref(false)
+  const imagesLoading = ref(false)
+  const error = ref(null)
+  const notFound = ref(false)
+  let started = false
+
+  async function load(slug) {
+    overview.value = null
+    images.value = []
+    nextCursor.value = null
+    notFound.value = false
+    started = false
+    error.value = null
+    loading.value = true
+    try {
+      overview.value = await api.get(`/api/artist/${encodeURIComponent(slug)}`)
+      await loadMoreImages(slug)
+    } catch (e) {
+      if (e.status === 404) notFound.value = true
+      else error.value = e.message
+    } finally {
+      loading.value = false
+    }
+  }
+
+  async function loadMoreImages(slug) {
+    if (imagesLoading.value) return
+    if (started && nextCursor.value === null) return
+    imagesLoading.value = true
+    try {
+      const params = { limit: PAGE }
+      if (nextCursor.value) params.cursor = nextCursor.value
+      const body = await api.get(
+        `/api/artist/${encodeURIComponent(slug)}/images`, { params }
+      )
+      images.value.push(...body.images)
+      nextCursor.value = body.next_cursor
+      started = true
+    } catch (e) {
+      error.value = e.message
+    } finally {
+      imagesLoading.value = false
+    }
+  }
+
+  const hasMoreImages = computed(() => !started || nextCursor.value !== null)
+
+  return {
+    overview, images, loading, imagesLoading, error, notFound,
+    hasMoreImages, load, loadMoreImages
+  }
+})