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slightly changed the code to have less mutations, added comments

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This commit is contained in:
Henry Jameson 2018-12-14 17:33:48 +03:00
parent d7973b0b80
commit 13fbef4550
1 changed files with 41 additions and 30 deletions
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71
src/components/user_card_content/user_card_content.js
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@ -90,43 +90,54 @@ export default {
store.state.api.backendInteractor.followUser(this.user.id)
.then((followedUser) => store.commit('addNewUsers', [followedUser]))
.then(() => {
// For locked users we just mark it that we sent the follow request
if (this.user.locked) {
this.followRequestInProgress = false
this.followRequestSent = true
return
}
if (this.user.following) {
// If we get result immediately, just stop.
this.followRequestInProgress = false
return
}
if (!this.user.locked) {
let attemptsLeft = 3
const fetchUser = () => new Promise((resolve, reject) => {
setTimeout(() => {
store.state.api.backendInteractor.fetchUser({ id: this.user.id })
.then((user) => store.commit('addNewUsers', [user]))
.then(() => resolve(this.user.following))
.catch((e) => reject(e))
}, 500)
}).then((confirmed) => {
if (!confirmed && attemptsLeft > 0) {
attemptsLeft--
return fetchUser()
} else if (confirmed) {
return true
// But usually we don't get result immediately, so we ask server
// for updated user profile to confirm if we are following them
// Sometimes it takes several tries. Sometimes we end up not following
// user anyway, probably because they locked themselves and we
// don't know that yet.
// Recursive Promise, it will call itself up to 3 times.
const fetchUser = (attempt) => new Promise((resolve, reject) => {
setTimeout(() => {
store.state.api.backendInteractor.fetchUser({ id: this.user.id })
.then((user) => store.commit('addNewUsers', [user]))
.then(() => resolve([this.user.following, attempt]))
.catch((e) => reject(e))
}, 500)
}).then(([following, attempt]) => {
if (!following && attempt <= 3) {
// If we BE reports that we still not following that user - retry,
// increment attempts by one
return fetchUser(++attempt)
} else {
// If we run out of attempts, just return whatever status is.
return following
}
})
return fetchUser(1)
.then((following) => {
if (following) {
// We confirmed and everything its good.
this.followRequestInProgress = false
} else {
return false
// If after all the tries, just treat it as if user is locked
this.followRequestInProgress = false
this.followRequestSent = true
}
})
return fetchUser()
.then((successfulConfirmation) => {
if (successfulConfirmation) {
this.followRequestInProgress = false
} else {
this.followRequestInProgress = false
this.followRequestSent = true
}
})
} else {
this.followRequestInProgress = false
this.followRequestSent = true
}
})
},
unfollowUser () {