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Original file line number | Diff line number | Diff line change |
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import { | ||
isFn, | ||
isPlainObject | ||
} from 'uni-shared' | ||
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import { | ||
shouldPromise | ||
} from './promise' | ||
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const HOOKS = [ | ||
'invoke', | ||
'success', | ||
'fail', | ||
'complete', | ||
'returnValue' | ||
] | ||
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const globalInterceptors = {} | ||
const scopedInterceptors = {} | ||
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function mergeHook (parentVal, childVal) { | ||
const res = childVal | ||
? parentVal | ||
? parentVal.concat(childVal) | ||
: Array.isArray(childVal) | ||
? childVal : [childVal] | ||
: parentVal | ||
return res | ||
? dedupeHooks(res) | ||
: res | ||
} | ||
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function dedupeHooks (hooks) { | ||
const res = [] | ||
for (let i = 0; i < hooks.length; i++) { | ||
if (res.indexOf(hooks[i]) === -1) { | ||
res.push(hooks[i]) | ||
} | ||
} | ||
return res | ||
} | ||
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function removeHook (hooks, hook) { | ||
const index = hooks.indexOf(hook) | ||
if (index !== -1) { | ||
hooks.splice(index, 1) | ||
} | ||
} | ||
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function mergeInterceptorHook (interceptor, option) { | ||
Object.keys(option).forEach(hook => { | ||
if (HOOKS.indexOf(hook) !== -1 && isFn(option[hook])) { | ||
interceptor[hook] = mergeHook(interceptor[hook], option[hook]) | ||
} | ||
}) | ||
} | ||
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function removeInterceptorHook (interceptor, option) { | ||
if (!interceptor || !option) { | ||
return | ||
} | ||
Object.keys(option).forEach(hook => { | ||
if (HOOKS.indexOf(hook) !== -1 && isFn(option[hook])) { | ||
removeHook(interceptor[hook], option[hook]) | ||
} | ||
}) | ||
} | ||
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export function addInterceptor (method, option) { | ||
if (typeof method === 'string' && isPlainObject(option)) { | ||
if (!shouldPromise(method)) { | ||
return console.warn(`${method} 不支持设置拦截器`) | ||
} | ||
mergeInterceptorHook(scopedInterceptors[method] || (scopedInterceptors[method] = {}), option) | ||
} else if (isPlainObject(method)) { | ||
mergeInterceptorHook(globalInterceptors, method) | ||
} | ||
} | ||
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export function removeInterceptor (method, option) { | ||
if (typeof method === 'string') { | ||
if (isPlainObject(option)) { | ||
removeInterceptorHook(scopedInterceptors[method], option) | ||
} else { | ||
delete scopedInterceptors[method] | ||
} | ||
} else if (isPlainObject(method)) { | ||
removeInterceptorHook(globalInterceptors, method) | ||
} | ||
} | ||
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function wrapperHook (hook) { | ||
return function (data) { | ||
return hook(data) || data | ||
} | ||
} | ||
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function isPromise (obj) { | ||
return !!obj && (typeof obj === 'object' || typeof obj === 'function') && typeof obj.then === 'function' | ||
} | ||
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function queue (hooks, data) { | ||
let promise = false | ||
for (let i = 0; i < hooks.length; i++) { | ||
const hook = hooks[i] | ||
if (promise) { | ||
promise = Promise.then(wrapperHook(hook)) | ||
} else { | ||
const res = hook(data) | ||
if (isPromise(res)) { | ||
promise = Promise.resolve(res) | ||
} | ||
if (res === false) { | ||
return { | ||
then () {} | ||
} | ||
} | ||
} | ||
} | ||
return promise || { | ||
then (callback) { | ||
return callback(data) | ||
} | ||
} | ||
} | ||
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function wrapperOptions (interceptor, options = {}) { | ||
['success', 'fail', 'complete'].forEach(name => { | ||
if (Array.isArray(interceptor[name])) { | ||
const oldCallback = options[name] | ||
options[name] = function callbackInterceptor (res) { | ||
queue(interceptor[name], res).then((res) => { | ||
/* eslint-disable no-mixed-operators */ | ||
return isFn(oldCallback) && oldCallback(res) || res | ||
}) | ||
} | ||
} | ||
}) | ||
return options | ||
} | ||
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export function wrapperReturnValue (method, returnValue) { | ||
const returnValueHooks = [] | ||
if (Array.isArray(globalInterceptors.returnValue)) { | ||
returnValueHooks.push(...globalInterceptors.returnValue) | ||
} | ||
const interceptor = scopedInterceptors[method] | ||
if (interceptor && Array.isArray(interceptor.returnValue)) { | ||
returnValueHooks.push(...interceptor.returnValue) | ||
} | ||
returnValueHooks.forEach(hook => { | ||
returnValue = hook(returnValue) || returnValue | ||
}) | ||
return returnValue | ||
} | ||
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function getApiInterceptorHooks (method) { | ||
const interceptor = Object.create(null) | ||
Object.keys(globalInterceptors).forEach(hook => { | ||
if (hook !== 'returnValue') { | ||
interceptor[hook] = globalInterceptors[hook].slice() | ||
} | ||
}) | ||
const scopedInterceptor = scopedInterceptors[method] | ||
if (scopedInterceptor) { | ||
Object.keys(scopedInterceptor).forEach(hook => { | ||
if (hook !== 'returnValue') { | ||
interceptor[hook] = (interceptor[hook] || []).concat(scopedInterceptor[hook]) | ||
} | ||
}) | ||
} | ||
return interceptor | ||
} | ||
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export function invokeApi (method, api, options, ...params) { | ||
const interceptor = getApiInterceptorHooks(method) | ||
if (interceptor) { | ||
if (Array.isArray(interceptor.invoke)) { | ||
const res = queue(interceptor.invoke, options) | ||
return res.then((options) => { | ||
return api(wrapperOptions(interceptor, options), ...params) | ||
}) | ||
} else { | ||
return api(wrapperOptions(interceptor, options), ...params) | ||
} | ||
} | ||
return api(options, ...params) | ||
} | ||
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export const promiseInterceptor = { | ||
returnValue (res) { | ||
if (!isPromise(res)) { | ||
return res | ||
} | ||
return res.then(res => { | ||
return res[1] | ||
}).catch(res => { | ||
return res[0] | ||
}) | ||
} | ||
} |
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Original file line number | Diff line number | Diff line change |
---|---|---|
@@ -0,0 +1,13 @@ | ||
import { | ||
promiseInterceptor | ||
} from 'uni-helpers/interceptor' | ||
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export { | ||
addInterceptor, | ||
removeInterceptor | ||
} | ||
from 'uni-helpers/interceptor' | ||
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export const interceptors = { | ||
promiseInterceptor | ||
} |
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