<!-- 
 Copyright (C) 2020 - 2024 3NSoft Inc.

 This program is free software: you can redistribute it and/or modify it under
 the terms of the GNU General Public License as published by the Free Software
 Foundation, either version 3 of the License, or (at your option) any later
 version.

 This program is distributed in the hope that it will be useful, but
 WITHOUT ANY WARRANTY; without even the implied warranty of
 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
 See the GNU General Public License for more details.

 You should have received a copy of the GNU General Public License along with
 this program. If not, see <http://www.gnu.org/licenses/>.
-->

<script lang="ts" setup>
  import { computed, onMounted, ref } from 'vue'
  import { getElementColor } from '@v1nt1248/3nclient-lib'

  const props = defineProps<{
    name: string;
    size?: number | string;
    shape?: 'circle' | 'box' | 'octagon' | 'decagon' | 'dodecagon' | undefined;
  }>()

  const shapes = {
    circle: 'circle(50% at 50% 50%)',
    box: 'polygon(0 0, 100% 0, 100% 100%, 0% 100%)',
    octagon: 'polygon(30% 0%, 70% 0%, 100% 30%, 100% 70%, 70% 100%, 30% 100%, 0% 70%, 0% 30%)',
    decagon: 'polygon(100.00% 50.00%,90.45% 79.39%,65.45% 97.55%,34.55% 97.55%,9.55% 79.39%,0.00% 50.00%,9.55% 20.61%,34.55% 2.45%,65.45% 2.45%,90.45% 20.61%)',
    dodecagon: 'polygon(100.00% 50.00%,93.30% 75.00%,75.00% 93.30%,50.00% 100.00%,25.00% 93.30%,6.70% 75.00%,0.00% 50.00%,6.70% 25.00%,25.00% 6.70%,50.00% 0.00%,75.00% 6.70%,93.30% 25.00%)',
  }

  const avatarElement = ref<HTMLDivElement|null>(null)

  const clipPathValue = computed(() => {
    if (!props.shape) {
      return shapes.circle
    }

    const value = shapes[props.shape]
    return value || shapes.circle
  })

  const letters = computed<string>(() => {
    return props.name.length === 1
      ? props.name.toLocaleUpperCase()
      : `${props.name[0].toLocaleUpperCase()}${props.name[1].toLocaleLowerCase()}`
  })

  const mainStyle = computed<Record<string, string>>(() => {
    return {
      '--clip-path-value': clipPathValue.value,
      backgroundColor: getElementColor(letters.value || '?'),
    }
  })

  onMounted(() => {
    if (avatarElement.value) {
      const avatarSize = Number(props.size || 36)
      avatarElement.value!.style.setProperty('--chat-avatar-size', `${avatarSize}px`)
    }
  })
</script>

<template>
  <div
    ref="avatarElement"
    class="chat-avatar"
    :style="mainStyle"
  >
    {{ letters }}
  </div>
</template>

<style lang="scss" scoped>
  .chat-avatar {
    --chat-avatar-size: calc(var(--base-size) * 4.5);
    --chat-avatar-text-size: calc(var(--chat-avatar-size) * 0.4);

    -webkit-font-smoothing: antialiased;
    min-height: var(--chat-avatar-size);
    height: var(--chat-avatar-size);
    min-width: var(--chat-avatar-size);
    width: var(--chat-avatar-size);
    position: relative;
    clip-path: var(--clip-path-value);
    color: var(--system-white, #fff);
    font-size: var(--chat-avatar-text-size);
    font-weight: 600;
    line-height: 1;
    z-index: 1;
    pointer-events: none;
    user-select: none;
    text-shadow: 2px 2px 5px var(--gray-90, #444);
    display: flex;
    justify-content: center;
    align-items: center;
  }
</style>
