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type TLinks = {
self: string
first?: object
last?: object
next?: object
prev?: object
}
type TResponse = {
links: TLinks
data: TDataElement[]
metadata: {
total: number
page: number
pages: number
size: number
}
}
type TDataElement = {
type: string
id: string
links: TLinks
attributes: {
[key: string]: any
}
relationships?: {
[key: string]: any
}
}
export default (req) => {
try {
const { queryResult, settings } = req
const { url, responseType } = settings
const entity = req.params.children ?? req.params.entity
if (responseType === 'json') return queryResult.primary
const { entityDef, body } = req
const { primaryKey } = entityDef
const result: TResponse = {
links: {
self: url,
first: {
url,
body: {
...body,
pagination: {
...body.pagination,
page: 1,
},
},
},
last: {
url,
body: {
...body,
pagination: {
...body.pagination,
page: queryResult.metadata.pages,
},
},
},
},
data: [],
metadata: queryResult.metadata,
}
if (result.metadata.page < result.metadata.pages) {
result.links.next = {
url,
body: {
...body,
pagination: {
...body.pagination,
page: result.metadata.page + 1,
},
},
}
}
if (
result.metadata.page > 1 &&
result.metadata.page <= result.metadata.pages
) {
result.links.prev = {
url,
body: {
...body,
pagination: {
...body.pagination,
page: result.metadata.page - 1,
},
},
}
}
let fields = body.fields && body.fields[entity] ? body.fields[entity] : []
fields = fields.map((field) => field.trim())
for (const record of queryResult.primary) {
const element: TDataElement = {
type: entity,
id: record[primaryKey],
links: {
self: `${url}/${record[primaryKey]}`,
},
attributes: {},
}
/**
* Attributes handler
*/
Object.keys(record).forEach((key) => {
if (!fields.length || fields.includes(key)) {
element.attributes[key] = record[key]
}
})
/* END Attributes handler */
/**
* Relationships handler
*/
if (entity === req.params.entity && entityDef.relationships) {
Object.keys(entityDef.relationships).forEach((relationship) => {
if (!element.relationships) {
element.relationships = {}
}
// has-one
if (entityDef.relationships[relationship].type === 'has-one') {
if (record[entityDef.relationships[relationship].foreignKey]) {
element.relationships[relationship] = {
type: relationship,
id: record[entityDef.relationships[relationship].foreignKey],
}
}
// Handle included relationships
if (
queryResult.secondary[relationship] &&
queryResult.secondary[relationship].length
) {
let relatedFields =
body.fields && body.fields[relationship]
? body.fields[relationship]
: []
relatedFields = relatedFields.map((field) => field.trim())
const relatedRecord = queryResult.secondary[relationship][0]
if (relatedFields.length) {
Object.keys(relatedRecord).forEach((key) => {
if (!relatedFields.includes(key)) {
delete relatedRecord[key]
}
})
}
element.relationships[relationship].attributes = relatedRecord
}
}
// has-many
if (entityDef.relationships[relationship].type === 'has-many') {
let relatedFields =
body.fields && body.fields[relationship]
? body.fields[relationship]
: []
relatedFields = relatedFields.map((field) => field.trim())
const relatedRecords: Record<string, any>[] = []
if (queryResult.secondary[relationship]) {
for (const relatedRecord of queryResult.secondary[relationship]) {
const record: Record<string, any> = {
type: relationship,
id: relatedRecord[
entityDef.relationships[relationship].primaryKey
],
}
if (relatedFields.length) {
Object.keys(relatedRecord).forEach((key) => {
if (!relatedFields.includes(key)) {
delete relatedRecord[key]
}
})
}
record.attributes = relatedRecord
relatedRecords.push(record)
}
}
element.relationships[relationship] = {
links: {
related: `${url}/${record[primaryKey]}/${relationship}`,
},
}
if (queryResult.secondary[relationship]) {
element.relationships[relationship].data = relatedRecords || []
}
}
})
}
/* END Relationships handler */
result.data.push(element)
}
return result
} catch (error: any) {
throw new CustomError(`[normalizeDataStoreResults] ${error.message}`, 400)
}
}
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