Improve the Potentially Ambiguous Response Text of Registration and Reset Password

[YuevUwU]

Issue

There are too many issue and Discord comment about login and registration😭
So I made some guesses and mark "Ask us why???" in the flow chart with my test.
The flow chart doesn't list all possibilities, but infers the possible action based on the hint message.
I put the flow chart in the bottom of this body.
^{This suggestion probably spans phira, phira-web, and closed-source API modifications, so I submit a discussion rather than an issue.}

Idea

Message

Those messages is for reference only. It may not comform to grammatical or idiomatic usage. And probably increase risk.

Client

This section may need to notify translator to help to add the extra information.
Or clear their untranslated text to expose the extra hint. Or add the extra hint after translated text. (Inspired by PO file)

# Registeration Fallback
- Please check your inbox for an activation email from Phira.
+ Please check your inbox for an activation email from Phira.
+ If it doesn't appear, there are probably three possiblility occured
+ - The mail is probably in the spam box.
+ - You type a wrong email.
+ - You haven't registered successfully. Or you should activate you account by the activation link in mailbox.
+ - The mail may be in the spam box.
+ - The mail is sending, and you may need to wait for a while.
+ - The mail service is down.

API

# Login an Unverified Account Fallback
- The account is not activated yet. Please follow the instructions in the activation email.
+ If it doesn't appear, there are probably three possiblility occured
+ - The mail is probably in the spam box.
+ - You type a wrong email.
+ - You haven't registered successfully. Or you should activate you account by the activation link in mailbox.
+ - The mail may be in the spam box.
+ - The mail is sending, and you may need to wait for a while.
+ - The mail service is down.

# Login with Wrong Email or Password Fallback
- Email or password is wrong.
+ Email or password is wrong. Try to reset password in phira.moe or register again.

# Register again
- Email occupied.
+ Email occupied. Please login this mail if it's you own, or reset password if your account seems to be stolen.

# Submit "Reset Password"
- (Blank)
+ Check out your mailbox if you have logged in the account before.
+ If it doesn't appear, there are probably three possiblility occured
+ - The mail is probably in the spam box.
+ - You type a wrong email.
+ - You haven't registered successfully. Or you should activate you account by the activation link in mailbox.
+ - The mail may be in the spam box.
+ - The mail is sending, and you may need to wait for a while.
+ - The mail service is down. Please retry in a few hours.

# Access expired link, probably register or reset password
- Link has expired.
+ Link has expired. Please request operation (Register, Reset password, etc.) again.

UI

Client

• Current dialog box of client can be easily closed by tap anywhere.
  User may tap mistakenly and didn't see what we said.
  Consider to only trigger if button is clicked.
• Provide a "Reset Password" entrypoint like phira.moe.

Web

• Current phira.moe use pop-up notification from top with disappear automatically.
  If really add more guide message, it will be failed easily to read the detail.
  Consider to not disappear automatically if it really changed.

Flow Chart

flowchart TD
    Start1@{ shape: sm-circ, label: "Unregistered" } -->|Register on phira.moe| RegWeb(Registered)
    Start1 -->|Register on client| RegClient(Please check your inbox for an activation email from Phira.)
    RegClient -->|Activate<br>and Login| Stop1
    RegClient -.-> MailServiceUnavailable@{ shape: trap-t, label: "Not received mail<br>Report issue" }
    RegClient -.->|"Login(?)"| GoActivate(The account is not activated yet. Please follow the instructions in the activation email.)
    RegWeb -->|Login| GoActivate
    GoActivate -.-> MailServiceUnavailable
    GoActivate -->|Activate<br>and Login| Stop1
    GoActivate -->|"Register(again)"| Occupied(Email occupied)
    GoActivate -.->|"May not clear(?)<br>or Think the request hasn't been processed by server(?)<br>because the word 'activate'(?)"| Timeout
    RegWeb --> Timeout@{ shape: trap-t, label: "Wait for 10 minutes<br>(Or Timeout)" }
    Timeout -->|Activate| LinkExpired(Link has expired)
    LinkExpired --> Start2
    Timeout -->|Login| Wrong
    Start1 -->|Login| Wrong(Email or password is wrong)
    Occupied --> Ask1
    Wrong -->|"No idea<br>Or can't find the entry to reset the password"| Ask2
    Wrong -->|Reset Password| Blank("(Blank page)")
    Blank --> Ask2
    Blank --> Check@{ shape: trap-t, label: "Check Mailbox<br>(Has registered?)" }
    Check -->|"No<br>(no mail sent)"| Ask2
    Check -->|Yes| Reset(Reset successfully)
    Reset -->|Login| Stop2
    Start2@{ shape: sm-circ, label: "Unregistered" }
    Ask1@{ shape: flag, label: "Ask us why???" } -->|Login<br>or after Reset Password| Stop1
    Ask2@{ shape: flag, label: "Ask us why???" } --> Start2
    Stop1@{ shape: framed-circle, label: "Login Successfully" }
    Stop2@{ shape: framed-circle, label: "Login Successfully" }

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