/*
Copyright (C) 2025 QuantumNous

This program is free software: you can redistribute it and/or modify
it under the terms of the GNU Affero 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 Affero General Public License for more details.

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

For commercial licensing, please contact support@quantumnous.com
*/

import React, { memo } from 'react';
import { Card, Skeleton } from '@douyinfe/semi-ui';

const THEME_COLORS = {
  allVendors: {
    primary: '37 99 235',
    background: 'rgba(59, 130, 246, 0.1)',
    border: 'rgba(59, 130, 246, 0.2)'
  },
  specific: {
    primary: '16 185 129',
    background: 'rgba(16, 185, 129, 0.1)',
    border: 'rgba(16, 185, 129, 0.2)'
  },
  neutral: {
    background: 'rgba(156, 163, 175, 0.1)',
    border: 'rgba(156, 163, 175, 0.2)'
  }
};

const SIZES = {
  title: { width: { all: 120, specific: 100 }, height: 24 },
  tag: { width: 80, height: 20 },
  description: { height: 14 },
  avatar: { width: 40, height: 40 },
  searchInput: { height: 32 },
  button: { width: 80, height: 32 }
};

const SKELETON_STYLES = {
  cover: (primaryColor) => ({
    '--palette-primary-darkerChannel': primaryColor,
    backgroundImage: `linear-gradient(0deg, rgba(var(--palette-primary-darkerChannel) / 80%), rgba(var(--palette-primary-darkerChannel) / 80%)), url('/cover-4.webp')`,
    backgroundSize: 'cover',
    backgroundPosition: 'center',
    backgroundRepeat: 'no-repeat'
  }),
  title: {
    backgroundColor: 'rgba(255, 255, 255, 0.25)',
    borderRadius: 8,
    backdropFilter: 'blur(4px)'
  },
  tag: {
    backgroundColor: 'rgba(255, 255, 255, 0.2)',
    borderRadius: 9999,
    backdropFilter: 'blur(4px)',
    border: '1px solid rgba(255,255,255,0.3)'
  },
  description: {
    backgroundColor: 'rgba(255, 255, 255, 0.2)',
    borderRadius: 4,
    backdropFilter: 'blur(4px)'
  },
  avatar: (isAllVendors) => {
    const colors = isAllVendors ? THEME_COLORS.allVendors : THEME_COLORS.specific;
    return {
      backgroundColor: colors.background,
      borderRadius: 12,
      border: `1px solid ${colors.border}`
    };
  },
  searchInput: {
    backgroundColor: THEME_COLORS.neutral.background,
    borderRadius: 8,
    border: `1px solid ${THEME_COLORS.neutral.border}`
  },
  button: {
    backgroundColor: THEME_COLORS.neutral.background,
    borderRadius: 8,
    border: `1px solid ${THEME_COLORS.neutral.border}`
  }
};

const createSkeletonRect = (style = {}, key = null) => (
  <div key={key} className="animate-pulse" style={style} />
);

const PricingVendorIntroSkeleton = memo(({
  isAllVendors = false,
  isMobile = false
}) => {

  const placeholder = (
    <Card className="!rounded-2xl shadow-sm border-0"
      cover={
        <div
          className="relative h-full"
          style={SKELETON_STYLES.cover(isAllVendors ? THEME_COLORS.allVendors.primary : THEME_COLORS.specific.primary)}
        >
          <div className="relative z-10 h-full flex items-center justify-between p-4">
            <div className="flex-1 min-w-0 mr-4">
              <div className="flex flex-row flex-wrap items-center gap-2 sm:gap-3 mb-2">
                {createSkeletonRect({
                  ...SKELETON_STYLES.title,
                  width: isAllVendors ? SIZES.title.width.all : SIZES.title.width.specific,
                  height: SIZES.title.height
                }, 'title')}
                {createSkeletonRect({
                  ...SKELETON_STYLES.tag,
                  width: SIZES.tag.width,
                  height: SIZES.tag.height
                }, 'tag')}
              </div>
              <div className="space-y-2">
                {createSkeletonRect({
                  ...SKELETON_STYLES.description,
                  width: '100%',
                  height: SIZES.description.height
                }, 'desc1')}
                {createSkeletonRect({
                  ...SKELETON_STYLES.description,
                  backgroundColor: 'rgba(255, 255, 255, 0.15)',
                  width: '75%',
                  height: SIZES.description.height
                }, 'desc2')}
              </div>
            </div>

            <div className="flex-shrink-0 w-16 h-16 rounded-2xl bg-white/90 shadow-md backdrop-blur-sm flex items-center justify-center">
              {createSkeletonRect({
                ...SKELETON_STYLES.avatar(isAllVendors),
                width: SIZES.avatar.width,
                height: SIZES.avatar.height
              }, 'avatar')}
            </div>
          </div>
        </div>
      }
    >
      <div className="flex items-center gap-2 w-full">
        <div className="flex-1">
          {createSkeletonRect({
            ...SKELETON_STYLES.searchInput,
            width: '100%',
            height: SIZES.searchInput.height
          }, 'search')}
        </div>

        {createSkeletonRect({
          ...SKELETON_STYLES.button,
          width: SIZES.button.width,
          height: SIZES.button.height
        }, 'copy-button')}

        {isMobile && createSkeletonRect({
          ...SKELETON_STYLES.button,
          width: SIZES.button.width,
          height: SIZES.button.height
        }, 'filter-button')}
      </div>
    </Card>
  );

  return (
    <Skeleton loading={true} active placeholder={placeholder}></Skeleton>
  );
});

PricingVendorIntroSkeleton.displayName = 'PricingVendorIntroSkeleton';

export default PricingVendorIntroSkeleton;