<!--
SPDX-FileCopyrightText: syuilo and other misskey contributors
SPDX-License-Identifier: AGPL-3.0-only
-->

<template>
  <div>
    <div :class="[$style.banner ,{[$style.gamingDark]: gamingType ==='dark' , [$style.gamingLight]: gamingType ==='light'}]">
      <i class="ti ti-user-edit"></i>
    </div>
    <MkSpacer :marginMin="20" :marginMax="32">
      <form class="_gaps_m" autocomplete="new-password" @submit.prevent="onSubmit">
        <MkInput v-if="instance.disableRegistration" v-model="invitationCode" type="text" :spellcheck="false" required>
          <template #label>{{ i18n.ts.invitationCode }}</template>
          <template #prefix><i class="ti ti-key"></i></template>
        </MkInput>
        <MkInput v-model="username" type="text" pattern="^[a-zA-Z0-9_]{1,20}$" :spellcheck="false"
                 autocomplete="username" required data-cy-signup-username @update:modelValue="onChangeUsername">
          <template #label>{{ i18n.ts.username }}
            <div v-tooltip:dialog="i18n.ts.usernameInfo" class="_button _help"><i class="ti ti-help-circle"></i></div>
          </template>
          <template #prefix>@</template>
          <template #suffix>@{{ host }}</template>
          <template #caption>
            <div><i class="ti ti-alert-triangle ti-fw"></i> {{ i18n.ts.cannotBeChangedLater }}</div>
            <span v-if="usernameState === 'wait'" style="color:#999"><MkLoading :em="true"/> {{
                i18n.ts.checking
              }}</span>
            <span v-else-if="usernameState === 'ok'" style="color: var(--success)"><i
                class="ti ti-check ti-fw"></i> {{ i18n.ts.available }}</span>
            <span v-else-if="usernameState === 'unavailable'" style="color: var(--error)"><i
                class="ti ti-alert-triangle ti-fw"></i> {{ i18n.ts.unavailable }}</span>
            <span v-else-if="usernameState === 'error'" style="color: var(--error)"><i
                class="ti ti-alert-triangle ti-fw"></i> {{ i18n.ts.error }}</span>
            <span v-else-if="usernameState === 'invalid-format'" style="color: var(--error)"><i
                class="ti ti-alert-triangle ti-fw"></i> {{ i18n.ts.usernameInvalidFormat }}</span>
            <span v-else-if="usernameState === 'min-range'" style="color: var(--error)"><i
                class="ti ti-alert-triangle ti-fw"></i> {{ i18n.ts.tooShort }}</span>
            <span v-else-if="usernameState === 'max-range'" style="color: var(--error)"><i
                class="ti ti-alert-triangle ti-fw"></i> {{ i18n.ts.tooLong }}</span>
          </template>
        </MkInput>
        <MkInput v-if="instance.emailRequiredForSignup" v-model="email" :debounce="true" type="email"
                 :spellcheck="false" required data-cy-signup-email @update:modelValue="onChangeEmail">
          <template #label>{{ i18n.ts.emailAddress }}
            <div v-tooltip:dialog="i18n.ts._signup.emailAddressInfo" class="_button _help"><i
                class="ti ti-help-circle"></i></div>
          </template>
          <template #prefix><i class="ti ti-mail"></i></template>
          <template #caption>
            <span v-if="emailState === 'wait'" style="color:#999"><MkLoading :em="true"/> {{ i18n.ts.checking }}</span>
            <span v-else-if="emailState === 'ok'" style="color: var(--success)"><i
                class="ti ti-check ti-fw"></i> {{ i18n.ts.available }}</span>
            <span v-else-if="emailState === 'unavailable:used'" style="color: var(--error)"><i
                class="ti ti-alert-triangle ti-fw"></i> {{ i18n.ts._emailUnavailable.used }}</span>
            <span v-else-if="emailState === 'unavailable:format'" style="color: var(--error)"><i
                class="ti ti-alert-triangle ti-fw"></i> {{ i18n.ts._emailUnavailable.format }}</span>
            <span v-else-if="emailState === 'unavailable:disposable'" style="color: var(--error)"><i
                class="ti ti-alert-triangle ti-fw"></i> {{ i18n.ts._emailUnavailable.disposable }}</span>
            <span v-else-if="emailState === 'unavailable:mx'" style="color: var(--error)"><i
                class="ti ti-alert-triangle ti-fw"></i> {{ i18n.ts._emailUnavailable.mx }}</span>
            <span v-else-if="emailState === 'unavailable:smtp'" style="color: var(--error)"><i
                class="ti ti-alert-triangle ti-fw"></i> {{ i18n.ts._emailUnavailable.smtp }}</span>
            <span v-else-if="emailState === 'unavailable'" style="color: var(--error)"><i
                class="ti ti-alert-triangle ti-fw"></i> {{ i18n.ts.unavailable }}</span>
            <span v-else-if="emailState === 'error'" style="color: var(--error)"><i
                class="ti ti-alert-triangle ti-fw"></i> {{ i18n.ts.error }}</span>
          </template>
        </MkInput>
        <MkInput v-model="password" type="password" autocomplete="new-password" required data-cy-signup-password
                 @update:modelValue="onChangePassword">
          <template #label>{{ i18n.ts.password }}</template>
          <template #prefix><i class="ti ti-lock"></i></template>
          <template #caption>
            <span v-if="passwordStrength == 'low'" style="color: var(--error)"><i
                class="ti ti-alert-triangle ti-fw"></i> {{ i18n.ts.weakPassword }}</span>
            <span v-if="passwordStrength == 'medium'" style="color: var(--warn)"><i
                class="ti ti-check ti-fw"></i> {{ i18n.ts.normalPassword }}</span>
            <span v-if="passwordStrength == 'high'" style="color: var(--success)"><i
                class="ti ti-check ti-fw"></i> {{ i18n.ts.strongPassword }}</span>
          </template>
        </MkInput>
        <MkInput v-model="retypedPassword" type="password" autocomplete="new-password" required
                 data-cy-signup-password-retype @update:modelValue="onChangePasswordRetype">
          <template #label>{{ i18n.ts.password }} ({{ i18n.ts.retype }})</template>
          <template #prefix><i class="ti ti-lock"></i></template>
          <template #caption>
            <span v-if="passwordRetypeState == 'match'" style="color: var(--success)"><i class="ti ti-check ti-fw"></i> {{
                i18n.ts.passwordMatched
              }}</span>
            <span v-if="passwordRetypeState == 'not-match'" style="color: var(--error)"><i
                class="ti ti-alert-triangle ti-fw"></i> {{ i18n.ts.passwordNotMatched }}</span>
          </template>
        </MkInput>
        <MkCaptcha v-if="instance.enableHcaptcha" ref="hcaptcha" v-model="hCaptchaResponse" :class="$style.captcha"
                   provider="hcaptcha" :sitekey="instance.hcaptchaSiteKey"/>
        <MkCaptcha v-if="instance.enableRecaptcha" ref="recaptcha" v-model="reCaptchaResponse" :class="$style.captcha"
                   provider="recaptcha" :sitekey="instance.recaptchaSiteKey"/>
        <MkCaptcha v-if="instance.enableTurnstile" ref="turnstile" v-model="turnstileResponse" :class="$style.captcha"
                   provider="turnstile" :sitekey="instance.turnstileSiteKey"/>
        <MkButton type="submit" :disabled="shouldDisableSubmitting" large gradate rounded data-cy-signup-submit
                  style="margin: 0 auto;">
          <template v-if="submitting">
            <MkLoading :em="true" :colored="false"/>
          </template>
          <template v-else>{{ i18n.ts.start }}</template>
        </MkButton>
      </form>
    </MkSpacer>
  </div>
</template>

<script lang="ts" setup>
import {computed, ref, watch} from 'vue';
import {toUnicode} from 'punycode/';
import MkButton from './MkButton.vue';
import MkInput from './MkInput.vue';
import MkSwitch from './MkSwitch.vue';
import MkCaptcha, {type Captcha} from '@/components/MkCaptcha.vue';
import * as config from '@/config.js';
import * as os from '@/os.js';
import {login} from '@/account.js';
import {instance} from '@/instance.js';
import {i18n} from '@/i18n.js';
import {defaultStore} from "@/store.js";


let gamingType = computed(defaultStore.makeGetterSetter('gamingType'));

const props = withDefaults(defineProps<{
  autoSet?: boolean;
}>(), {
  autoSet: false,
});

const emit = defineEmits<{
  (ev: 'signup', user: Record<string, any>): void;
  (ev: 'signupEmailPending'): void;
}>();

const host = toUnicode(config.host);

let hcaptcha = $ref<Captcha | undefined>();
let recaptcha = $ref<Captcha | undefined>();
let turnstile = $ref<Captcha | undefined>();

let username: string = $ref('');
let password: string = $ref('');
let retypedPassword: string = $ref('');
let invitationCode: string = $ref('');
let email = $ref('');
let usernameState: null | 'wait' | 'ok' | 'unavailable' | 'error' | 'invalid-format' | 'min-range' | 'max-range' = $ref(null);
let emailState: null | 'wait' | 'ok' | 'unavailable:used' | 'unavailable:format' | 'unavailable:disposable' | 'unavailable:mx' | 'unavailable:smtp' | 'unavailable' | 'error' = $ref(null);
let passwordStrength: '' | 'low' | 'medium' | 'high' = $ref('');
let passwordRetypeState: null | 'match' | 'not-match' = $ref(null);
let submitting: boolean = $ref(false);
let hCaptchaResponse = $ref(null);
let reCaptchaResponse = $ref(null);
let turnstileResponse = $ref(null);
let usernameAbortController: null | AbortController = $ref(null);
let emailAbortController: null | AbortController = $ref(null);

const shouldDisableSubmitting = $computed((): boolean => {
  return submitting ||
      instance.enableHcaptcha && !hCaptchaResponse ||
      instance.enableRecaptcha && !reCaptchaResponse ||
      instance.enableTurnstile && !turnstileResponse ||
      instance.emailRequiredForSignup && emailState !== 'ok' ||
      usernameState !== 'ok' ||
      passwordRetypeState !== 'match';
});

function getPasswordStrength(source: string): number {
  let strength = 0;
  let power = 0.018;

  // 英数字
  if (/[a-zA-Z]/.test(source) && /[0-9]/.test(source)) {
    power += 0.020;
  }

  // 大文字と小文字が混ざってたら
  if (/[a-z]/.test(source) && /[A-Z]/.test(source)) {
    power += 0.015;
  }

  // 記号が混ざってたら
  if (/[!\x22\#$%&@'()*+,-./_]/.test(source)) {
    power += 0.02;
  }

  strength = power * source.length;

  return Math.max(0, Math.min(1, strength));
}

function onChangeUsername(): void {
  if (username === '') {
    usernameState = null;
    return;
  }

  {
    const err =
        !username.match(/^[a-zA-Z0-9_]+$/) ? 'invalid-format' :
            username.length < 1 ? 'min-range' :
                username.length > 20 ? 'max-range' :
                    null;

    if (err) {
      usernameState = err;
      return;
    }
  }

  if (usernameAbortController != null) {
    usernameAbortController.abort();
  }
  usernameState = 'wait';
  usernameAbortController = new AbortController();

  os.api('username/available', {
    username,
  }, undefined, usernameAbortController.signal).then(result => {
    usernameState = result.available ? 'ok' : 'unavailable';
  }).catch((err) => {
    if (err.name !== 'AbortError') {
      usernameState = 'error';
    }
  });
}

function onChangeEmail(): void {
  if (email === '') {
    emailState = null;
    return;
  }

  if (emailAbortController != null) {
    emailAbortController.abort();
  }
  emailState = 'wait';
  emailAbortController = new AbortController();

  os.api('email-address/available', {
    emailAddress: email,
  }, undefined, emailAbortController.signal).then(result => {
    emailState = result.available ? 'ok' :
        result.reason === 'used' ? 'unavailable:used' :
            result.reason === 'format' ? 'unavailable:format' :
                result.reason === 'disposable' ? 'unavailable:disposable' :
                    result.reason === 'mx' ? 'unavailable:mx' :
                        result.reason === 'smtp' ? 'unavailable:smtp' :
                            'unavailable';
  }).catch((err) => {
    if (err.name !== 'AbortError') {
      emailState = 'error';
    }
  });
}

function onChangePassword(): void {
  if (password === '') {
    passwordStrength = '';
    return;
  }

  const strength = getPasswordStrength(password);
  passwordStrength = strength > 0.7 ? 'high' : strength > 0.3 ? 'medium' : 'low';
}

function onChangePasswordRetype(): void {
  if (retypedPassword === '') {
    passwordRetypeState = null;
    return;
  }

  passwordRetypeState = password === retypedPassword ? 'match' : 'not-match';
}

async function onSubmit(): Promise<void> {
  if (submitting) return;
  submitting = true;

  try {
    await os.api('signup', {
      username,
      password,
      emailAddress: email,
      invitationCode,
      'hcaptcha-response': hCaptchaResponse,
      'g-recaptcha-response': reCaptchaResponse,
      'turnstile-response': turnstileResponse,
    });
    if (instance.emailRequiredForSignup) {
      os.alert({
        type: 'success',
        title: i18n.ts._signup.almostThere,
        text: i18n.t('_signup.emailSent', {email}),
      });
      emit('signupEmailPending');
    } else {
      const res = await os.api('signin', {
        username,
        password,
      });
      emit('signup', res);

      if (props.autoSet) {
        return login(res.i);
      }
    }
  } catch {
    submitting = false;
    hcaptcha?.reset?.();
    recaptcha?.reset?.();
    turnstile?.reset?.();

    os.alert({
      type: 'error',
      text: i18n.ts.somethingHappened,
    });
  }
}
</script>

<style lang="scss" module>
.banner {
  padding: 16px;
  text-align: center;
  font-size: 26px;
  background-color: var(--accentedBg);
  color: var(--accent);

  &.gamingDark {
    background: linear-gradient(270deg, #e7a2a2, #e3cfa2, #ebefa1, #b3e7a6, #a6ebe7, #aec5e3, #cabded, #e0b9e3, #f4bddd);
    background-size: 1800% 1800%;
    -webkit-animation: AnimationDark var(--gamingspeed) cubic-bezier(0, 0.2, 0.90, 1) infinite;
    -moz-animation: AnimationDark var(--gamingspeed) cubic-bezier(0, 0.2, 0.90, 1) infinite;
    animation: AnimationDark var(--gamingspeed) cubic-bezier(0, 0.2, 0.90, 1) infinite;
    color: var(--navFg);
  }

  &.gamingLight {
    background: linear-gradient(270deg, #c06161, #c0a567, #b6ba69, #81bc72, #63c3be, #8bacd6, #9f8bd6, #d18bd6, #d883b4);
    background-size: 1800% 1800%;
    -webkit-animation: AnimationLight var(--gamingspeed) cubic-bezier(0, 0.2, 0.90, 1) infinite;
    -moz-animation: AnimationLight var(--gamingspeed) cubic-bezier(0, 0.2, 0.90, 1) infinite;
    animation: AnimationLight var(--gamingspeed) cubic-bezier(0, 0.2, 0.90, 1) infinite;
    color: var(--navFg);
  }

}

.captcha {
  margin: 16px 0;
}

@-webkit-keyframes AnimationLight {
  0% {
    background-position: 0% 50%
  }
  50% {
    background-position: 100% 50%
  }
  100% {
    background-position: 0% 50%
  }
}

@-moz-keyframes AnimationLight {
  0% {
    background-position: 0% 50%
  }
  50% {
    background-position: 100% 50%
  }
  100% {
    background-position: 0% 50%
  }
}

@keyframes AnimationLight {
  0% {
    background-position: 0% 50%
  }
  50% {
    background-position: 100% 50%
  }
  100% {
    background-position: 0% 50%
  }
}

@-webkit-keyframes AnimationDark {
  0% {
    background-position: 0% 50%
  }
  50% {
    background-position: 100% 50%
  }
  100% {
    background-position: 0% 50%
  }
}

@-moz-keyframes AnimationDark {
  0% {
    background-position: 0% 50%
  }
  50% {
    background-position: 100% 50%
  }
  100% {
    background-position: 0% 50%
  }
}

@keyframes AnimationDark {
  0% {
    background-position: 0% 50%
  }
  50% {
    background-position: 100% 50%
  }
  100% {
    background-position: 0% 50%
  }
}
</style>