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search.ts
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search.ts
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import { defineStore } from "pinia"
import { useStorage } from "@vueuse/core"
import { env } from "~/utils/env"
import { deepClone } from "~/utils/clone"
import type { DeepWriteable } from "~/types/utils"
import {
ALL_MEDIA,
AUDIO,
IMAGE,
SearchType,
SupportedMediaType,
supportedMediaTypes,
SupportedSearchType,
supportedSearchTypes,
isAdditionalSearchType,
searchPath,
} from "~/constants/media"
import {
filtersToQueryData,
queryDictionaryToQueryParams,
pathToSearchType,
queryToFilterData,
} from "~/utils/search-query-transform"
import {
FilterCategory,
FilterItem,
Filters,
filterData,
mediaFilterKeys,
mediaUniqueFilterKeys,
} from "~/constants/filters"
import { INCLUDE_SENSITIVE_QUERY_PARAM } from "~/constants/content-safety"
import { useProviderStore } from "~/stores/provider"
import { useFeatureFlagStore } from "~/stores/feature-flag"
import { useMediaStore } from "~/stores/media"
import { SearchQuery, PaginatedSearchQuery } from "~/types/search"
import type { Ref } from "vue"
import type { Dictionary } from "vue-router/types/router"
import type { Context } from "@nuxt/types"
export const isSearchTypeSupported = (
st: SearchType
): st is SupportedSearchType => {
return supportedSearchTypes.includes(st as SupportedSearchType)
}
export interface SearchState {
searchType: SearchType
recentSearches: Ref<string[]>
backToSearchPath: string
searchTerm: string
localSearchTerm: string
filters: Filters
}
/**
* Builds the search query parameters for the given search type, filters, and search term.
* `q` parameter is always included as the first query parameter.
* If the search type is not supported, only the `q` parameter is included.
* This is used, for instance, for content switcher links for `video`/`model_3d` search pages.
* Only the filters that are relevant for the search type and have a value are included.
*
* `INCLUDE_SENSITIVE_QUERY_PARAM` is never added to the frontend search query. It is added
* to the API search query if the setting is `on` in the featureFlagStore.
*/
export function computeQueryParams(
searchType: SearchType,
filters: Filters,
searchTerm: string,
mode: "frontend" | "API"
) {
const q = searchTerm.trim()
if (!isSearchTypeSupported(searchType)) {
return { q }
}
// Ensure that `q` always comes first in the frontend URL.
const searchQuery: SearchQuery = {
q,
// The filters object is converted to a Record<string, string> object.
// e.g., { licenseTypes: [{ code: "commercial", checked: true }] }
// => { license_type: "commercial" }
...filtersToQueryData(filters, searchType),
}
// `INCLUDE_SENSITIVE_QUERY_PARAM` is used in the API params, but not shown on the frontend.
const ffStore = useFeatureFlagStore()
if (mode === "API" && ffStore.isOn("fetch_sensitive")) {
searchQuery[INCLUDE_SENSITIVE_QUERY_PARAM] = "true"
}
return searchQuery
}
export const useSearchStore = defineStore("search", {
state: (): SearchState => ({
searchType: ALL_MEDIA,
searchTerm: "",
backToSearchPath: "",
localSearchTerm: "",
recentSearches: useStorage<string[]>("recent-searches", []),
filters: deepClone(filterData as DeepWriteable<typeof filterData>),
}),
hydrate(state) {
// @ts-expect-error https://github.com/microsoft/TypeScript/issues/43826
state.recentSearches = useStorage<string[]>("recent-searches", [])
},
getters: {
filterCategories(state) {
return Object.keys(state.filters) as FilterCategory[]
},
/**
* Returns the search query parameters for API request.
* The main difference between api and frontend query parameters is that
* the API query parameters include the `include_sensitive_results` parameter.
*/
apiSearchQueryParams(state) {
return computeQueryParams(
state.searchType,
state.filters,
state.searchTerm,
"API"
)
},
/**
* Returns the number of checked filters.
*/
appliedFilterCount(state) {
const filterKeys = mediaFilterKeys[state.searchType]
return filterKeys.reduce((count, filterCategory) => {
return (
count + state.filters[filterCategory].filter((f) => f.checked).length
)
}, 0)
},
/**
* Returns the object with filters for selected search type,
* with codes, names for i18n labels, and checked status.
*/
searchFilters(state) {
return mediaFilterKeys[state.searchType].reduce((obj, filterKey) => {
obj[filterKey] = this.filters[filterKey]
return obj
}, {} as Filters)
},
/**
* True if any filter for selected search type is checked.
*/
isAnyFilterApplied() {
const filterEntries = Object.entries(this.searchFilters) as [
string,
FilterItem[]
][]
return filterEntries.some(([, filterItems]) =>
filterItems.some((filter) => filter.checked)
)
},
/**
* Returns whether the current `searchType` is a supported media type for search.
*/
searchTypeIsSupported(state) {
return isSearchTypeSupported(state.searchType)
},
},
actions: {
setBackToSearchPath(path: string) {
this.backToSearchPath = path
},
/**
* Updates the search type and search term, and returns the
* updated localized search path.
*/
updateSearchPath({
type,
searchTerm,
}: { type?: SearchType; searchTerm?: string } = {}): string {
if (type) {
this.setSearchType(type)
}
if (searchTerm) {
this.setSearchTerm(searchTerm)
}
return this.getSearchPath()
},
/**
* Returns localized frontend search path for the given search type.
*
* If search type is not provided, returns the path for the current search type.
* If query is not provided, returns current query parameters.
* If only the search type is provided, the query is computed for this search type.
*/
getSearchPath({
type,
query,
}: { type?: SearchType; query?: PaginatedSearchQuery } = {}): string {
const searchType = type ?? this.searchType
const queryParams =
query ??
computeQueryParams(
searchType,
this.filters,
this.searchTerm,
"frontend"
)
return this.$nuxt.localePath({
path: searchPath(searchType),
query: queryParams as unknown as Dictionary<string>,
})
},
setSearchType(type: SearchType) {
const featureFlagStore = useFeatureFlagStore()
if (
!featureFlagStore.isOn("additional_search_types") &&
isAdditionalSearchType(type)
) {
throw new Error(
`Please enable the 'additional_search_types' flag to use the ${type}`
)
}
this.searchType = type
this.clearOtherMediaTypeFilters(type)
},
/**
* The user can set several `q` query parameters, but we only
* use the first one.
* @param q - The URL `q` query parameter
*/
setSearchTerm(q: string | undefined | null) {
const formattedTerm = q ? q.trim() : ""
if (this.searchTerm === formattedTerm) return
this.searchTerm = formattedTerm
this.localSearchTerm = formattedTerm
this.addRecentSearch(formattedTerm)
const mediaStore = useMediaStore()
mediaStore.clearMedia()
},
/**
* This method need not exist and is only used to fix an odd
* hydration bug in the search route. After navigating from
* the homepage, the watcher in useStorage doesn't work.
*/
refreshRecentSearches() {
// @ts-expect-error https://github.com/microsoft/TypeScript/issues/43826
this.recentSearches = useStorage<string[]>("recent-searches", [])
},
/** Add a new term to the list of recent search terms */
addRecentSearch(
search: string /** A search term to add to the saved list.*/
) {
/**
* Add the latest search to the top of the stack,
* then add the existing items, making sure not to exceed
* the max count, and removing existing occurrences of the
* latest search term, if there are any.
*/
this.recentSearches = [
search,
...this.recentSearches.filter((i) => i !== search),
].slice(0, parseInt(env.savedSearchCount))
},
clearRecentSearches() {
this.recentSearches = []
},
/**
* Initial filters do not include the provider filters. We create the provider filters object
* when we fetch the provider data on the Nuxt server initialization.
* We call this function to reset the filters to the initial base filters AND the provider filters.
*/
getBaseFiltersWithProviders() {
const resetProviders = (mediaType: SupportedMediaType): FilterItem[] => {
return this.filters[`${mediaType}Providers`].map((provider) => ({
...provider,
checked: false,
}))
}
return {
...(deepClone(filterData) as DeepWriteable<typeof filterData>),
audioProviders: resetProviders(AUDIO),
imageProviders: resetProviders(IMAGE),
}
},
async initProviderFilters() {
const providerStore = useProviderStore()
const providers = await providerStore.getProviders()
for (const mediaType of supportedMediaTypes) {
this.updateProviderFilters({
mediaType,
providers: providers[mediaType],
})
}
},
/**
* Merge providers from API response with the filters that came from the browse URL search query string
* and match the checked properties in the store.
*/
updateProviderFilters({
mediaType,
providers,
}: {
mediaType: SupportedMediaType
providers: { source_name: string; display_name: string }[]
}) {
const providersKey: FilterCategory = `${mediaType}Providers`
const currentProviders = this.filters[providersKey]
? [...this.filters[providersKey]]
: []
this.filters[providersKey] = providers.map((provider) => {
const existingProviderFilterIdx = currentProviders.findIndex(
(p) => p.code === provider.source_name
)
const checked =
existingProviderFilterIdx >= 0
? currentProviders[existingProviderFilterIdx].checked
: false
return {
code: provider.source_name,
name: provider.display_name,
checked,
}
})
},
/**
* Toggle a filter's checked parameter. Requires either codeIdx or code.
* Returns the new checked value.
*/
toggleFilter({
filterType,
codeIdx,
code,
}: {
filterType: FilterCategory
codeIdx?: number
code?: string
}): boolean {
return this.setFilter({ filterType, codeIdx, code, toggle: true })
},
/**
* Set the `checked` parameter of the specific search filter.
* @param filterType - the slug of the filter kind, e.g. `licenseType`.
* @param codeIdx - the index of the filter item to set.
* @param code - the slug code of the filter item, e.g. `commercial`.
* @param value - the value to set checked to, `true` by default.
* @param toggle - if `true`, the value will be toggled.
*/
setFilter({
filterType,
codeIdx,
code,
value = true,
toggle = false,
}: {
filterType: FilterCategory
codeIdx?: number
code?: string
value?: boolean
toggle?: boolean
}) {
if (typeof codeIdx === "undefined" && typeof code === "undefined") {
throw new Error(
`Cannot update filter of type ${filterType}. Use code or codeIdx parameter`
)
}
const filterItems = this.filters[filterType]
const idx = codeIdx ?? filterItems.findIndex((f) => f.code === code)
this.filters[filterType][idx].checked = toggle
? !this.filters[filterType][idx].checked
: value
return this.filters[filterType][idx].checked
},
/**
* Resets all filters to initial values.
* Provider filters are not in the initial filters, so they need to be
* handled separately.
*
*/
clearFilters() {
for (const filterCategory of this.filterCategories) {
for (const filterItem of this.filters[filterCategory]) {
filterItem.checked = false
}
}
},
/**
* After a search type is changed, unchecks all the filters that are not
* applicable for this Media type.
*/
clearOtherMediaTypeFilters(searchType: SearchType) {
const mediaTypesToClear = supportedSearchTypes.filter(
(type) => type !== searchType
)
const filterKeysToClear = mediaTypesToClear.reduce((acc, type) => {
return [...acc, ...mediaUniqueFilterKeys[type]]
}, [] as FilterCategory[])
this.filterCategories.forEach((filterCategory) => {
if (filterKeysToClear.includes(filterCategory)) {
this.filters[filterCategory] = this.filters[filterCategory].map(
(f) => ({ ...f, checked: false })
)
}
})
},
/**
* Replaces filters with the newFilterData object that was created using initial filters,
* and setting parameters from the search query to checked.
*/
replaceFilters(newFilterData: Filters) {
this.filterCategories.forEach((filterCategory) => {
this.filters[filterCategory] = newFilterData[filterCategory]
})
},
/**
* Called when a /search path is server-rendered.
*/
setSearchStateFromUrl({
path,
urlQuery,
}: {
path: string
urlQuery: Context["query"]
}) {
// Update `fetch_sensitive` from the feature flag store because
// the value is not present in the URL.
const ffStore = useFeatureFlagStore()
const query = queryDictionaryToQueryParams({
...urlQuery,
...(ffStore.isOn("fetch_sensitive")
? { [INCLUDE_SENSITIVE_QUERY_PARAM]: "true" }
: {}),
})
this.setSearchTerm(query.q)
this.searchType = pathToSearchType(path)
if (!isSearchTypeSupported(this.searchType)) return
const newFilterData = queryToFilterData({
query,
searchType: this.searchType,
defaultFilters: this.getBaseFiltersWithProviders(),
})
this.replaceFilters(newFilterData)
},
/**
* Selecting some filter items disables related items. For example, selecting an `nc`
* license filter (CC BY-NC, CC BY-NC-SA, CC BY-NC-ND) disables the `Commercial` license
* type filter. This function determines if the filter item should be disabled based on
* the currently checked filter items.
*/
isFilterDisabled(
item: FilterItem,
filterCategory: FilterCategory
): boolean {
if (!["licenseTypes", "licenses"].includes(filterCategory)) {
return false
}
if (item.code === "commercial" || item.code === "modification") {
const targetCode = {
commercial: "nc",
modification: "nd",
}[item.code]
return this.filters.licenses.some(
(item: FilterItem) => item.code.includes(targetCode) && item.checked
)
} else {
const dependentFilters: string[] = []
if (item.code.includes("nc")) {
dependentFilters.push("commercial")
}
if (item.code.includes("nd")) {
dependentFilters.push("modification")
}
return this.filters.licenseTypes.some(
(item: FilterItem) =>
dependentFilters.includes(item.code) && item.checked
)
}
},
},
})