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import {update, set, merge, isPlainObject, isArray, mapValues, pickBy} from 'lodash';
import type {Action, ActionType} from './types';
import type {CannerSchema} from '../components/types';
/**
* change actions to variables which is the argument of graphql mutation
*/
export default function actionsToVariables(actions: Array<Action<ActionType>>, schema: CannerSchema) {
const variables = {payload: {}, where: {}};
actions.forEach(action => {
let {path = '', value, id, relation, key} = action.payload;
const relationField = genRelationField(schema, key);
value = parseArrayToSet(value, relationField);
switch(action.type) {
case 'CREATE_ARRAY': {
// remove null relation
const ensureValue = pickBy(value, (v, k) => v !== null && k !== '__typename' && relationField.indexOf(k) === -1);
merge(variables.payload, ensureValue);
break;
}
case 'UPDATE_ARRAY':
case 'UPDATE_OBJECT': {
merge(variables.payload, value);
merge(variables.where, {id});
variables.payload = removeTypename(variables.payload);
break;
}
case 'CONNECT': {
if (relation && relation.type === 'toMany') {
update(variables.payload, path.split('/'), relationField => {
Eif (isArray(relationField) || !relationField) {
return {
connect: [{
id: value.id
}]
};
}
relationField.connect.push({
id: value.id
});
return relationField;
});
} else {
set(variables.payload, path.split('/').concat('connect'), {id: value.id});
}
Eif (id) {
merge(variables.where, {id});
}
break;
}
case 'CREATE_AND_CONNECT': {
if (relation && relation.type === 'toMany') {
update(variables.payload, path.split('/').concat('create'), arr => (arr || []).concat(value));
} else {
set(variables.payload, path.split('/').concat('create'), value);
}
merge(variables.where, {id});
break;
}
case 'DISCONNECT':
if (relation && relation.type === 'toMany') {
update(variables.payload, path.split('/').concat('disconnect'), arr => (arr || []).concat({id: value.id}));
} else {
set(variables.payload, path.split('/').concat('disconnect'), true);
}
Eif (id) {
merge(variables.where, {id});
}
break;
case 'DISCONNECT_AND_DELETE':
if (relation && relation.type === 'toMany') {
update(variables.payload, path.split('/').concat('delete'), arr => (arr || []).concat(value));
} else {
set(variables.payload, path.split('/').concat('delete'), true);
}
merge(variables.where, {id});
break;
case 'DELETE_ARRAY':
merge(variables.where, {id});
break;
default:
break;
}
});
Eif (isPlainObject(variables.payload)) {
delete variables.payload.id;
}
return variables;
}
/**
* add typename: null in every object
*/
export function removeTypename(payload: any): any {
if (isPlainObject(payload)) {
const newPayload = {...payload};
delete newPayload.__typename;
return mapValues(newPayload, value => removeTypename(value));
} else if (Array.isArray(payload)) {
return payload.map(item => removeTypename(item));
}
return payload;
}
export function addTypename(payload: any): any {
if (isArray(payload)) {
return payload.map(item => addTypename(item));
}
if (isPlainObject(payload)) {
return mapValues(payload, (item, key) => {
return key === '__typename' ?
item :
addTypename(item)
});
} else {
return payload;
}
}
/**
*
* In canner graphql interface,
* an array value should become a object with `set` keyword.
*
* for examples:
* origin payload = {
* hobbies: ['basketball', 'swim']
* name: 'James'
* }
* will become
* {
* hobbies: {
* set: ['basketball', 'swim']
* },
* name: 'James'
* }
*
*/
export function parseArrayToSet(payload: any, relationField: Array<string>, key?: string): any {
if (isArray(payload) && relationField.indexOf(key) === -1) {
return {
set: payload.map(v => parseArrayToSet(v, relationField))
};
} else if (isPlainObject(payload)) {
return mapValues(payload, (v, k) => parseArrayToSet(v, relationField, k));
} else {
return payload
}
}
/**
* find the relation field in first level relation
*/
export function genRelationField(schema: Object, key: string): Array<string> {
const keySchema = schema[key];
let items = {};
if (keySchema.type === 'object') {
items = keySchema.items;
} else Eif (keySchema.type === 'array') {
items = keySchema.items.items
} else {
return [];
}
return Object.keys(items).filter((field: string) => items[field].type === 'relation');
} |