<template>
  <div class="flex flex-col gap-5 pt-4">
    <div class="card-surface">
      <div class="flex flex-col items-center gap-3">
        <p class="gw-metric">Coefficient relatif &agrave; l'anciennet&eacute;</p>

        <!-- My seniority -->
        <div class="flex flex-col items-center gap-1 w-full max-w-80">
          <label class="gw-text text-sm">Mon anciennet&eacute;</label>
          <input
            v-model="myDate"
            type="date"
            :min="Block0Date"
            :max="todayDate"
            class="gw-input w-full"
          />
          <p :class="['gw-text text-center text-sm', { invisible: !myDate }]">
            {{ getDays(myDate) || 0 }} DUs cr&eacute;&eacute;s
          </p>
        </div>

        <!-- Role -->
        <div class="flex items-center justify-center gap-2 mt-2">
          <span class="gw-text text-xs text-right">offre<br />le produit ou service</span>
          <label class="gw-toggle shrink-0">
            <input v-model="isSeller" type="checkbox" />
            <span class="gw-toggle-slider" />
          </label>
          <span class="gw-text text-xs">re&ccedil;oit<br />le produit ou service</span>
        </div>

        <!-- Other party name + add button -->
        <div class="flex items-center gap-4 w-full max-w-80">
          <div class="flex-1">
            <label class="gw-text text-sm">Nom {{ !isSeller ? 'du receveur' : "de l'offreur" }}</label>
            <input
              v-model="otherName"
              type="text"
              maxlength="25"
              class="gw-input w-full"
            />
          </div>
          <button
            v-if="!isBaseFriend"
            class="gw-icon-btn self-end mb-0.5"
            :disabled="!otherName || !otherDate || isFriend"
            :title="friends.some((f) => f.name === otherName) ? 'Mettre \u00e0 jour' : 'Ajouter relation'"
            @click="addFriend"
          >
            <svg v-if="friends.some((f) => f.name === otherName)" class="w-4 h-4" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2"><path d="M21 2v6h-6M3 12a9 9 0 0 1 15-6.7L21 8M3 22v-6h6M21 12a9 9 0 0 1-15 6.7L3 16" /></svg>
            <svg v-else class="w-4 h-4" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2"><line x1="12" y1="5" x2="12" y2="19" /><line x1="5" y1="12" x2="19" y2="12" /></svg>
          </button>
        </div>

        <!-- Other party date -->
        <div class="flex flex-col items-center gap-1 w-full max-w-80">
          <label class="gw-text text-sm">
            Anciennet&eacute; {{ otherName ? 'de ' + otherName : !isSeller ? 'du receveur' : "de l'offreur" }}
          </label>
          <input
            v-model="otherDate"
            type="date"
            :min="Block0Date"
            :max="todayDate"
            class="gw-input w-full max-w-64"
          />
          <p :class="['gw-text text-center text-sm', { invisible: !otherDate }]">
            {{ getDays(otherDate) || 0 }} DUs cr&eacute;&eacute;s
          </p>
        </div>

        <!-- Price -->
        <div class="flex items-center gap-3 justify-center">
          <label class="gw-text text-sm whitespace-nowrap">&Eacute;valuation de r&eacute;f.</label>
          <div class="relative">
            <input
              :value="price"
              type="number"
              min="0"
              :step="Math.ceil(Number(price) / 10 / 2) || 1"
              placeholder="0.00"
              class="gw-input w-40 pr-14"
              @input="price = Math.min(Number(($event.target as HTMLInputElement).value), 9999).toString()"
            />
            <select
              v-model="currency"
              class="absolute right-2 top-1/2 -translate-y-1/2 bg-transparent text-white/40 text-sm cursor-pointer border-0 outline-none"
              @change="price = '1'"
            >
              <option value="DU" class="bg-surface-100">DU</option>
              <option value="G1" class="bg-surface-100">&#x11E;1</option>
            </select>
          </div>
        </div>

        <!-- Discount -->
        <div class="flex items-center gap-3 justify-center">
          <label class="gw-text text-sm whitespace-nowrap">R&eacute;duction newbie</label>
          <div class="relative">
            <input
              :value="discount"
              type="number"
              min="0"
              :step="Math.ceil(Number(discount) / 10 / 2) || 1"
              placeholder="0"
              class="gw-input w-40 pr-8"
              @input="discount = Math.min(Number(($event.target as HTMLInputElement).value), 99).toString()"
            />
            <span class="absolute right-2 top-1/2 -translate-y-1/2 text-white/40 text-sm pointer-events-none">%</span>
          </div>
        </div>

        <!-- Corrected price -->
        <p class="gw-title mt-4">
&Eacute;valuation corrig&eacute;e : {{ fr(getFinalPrice(isSeller ? myDate : otherDate)) }} {{ currencyDisplay }}
        </p>
      </div>
    </div>

    <!-- Relations table -->
    <GratewizardGwRelations
      :items="tableItems"
      :base-friends="baseFriends"
      result-label="ÉVAL."
      @select="(f) => { otherName = f.name; otherDate = f.date; }"
      @remove="removeFriend"
    />
  </div>
</template>

<script setup lang="ts">
import { Block0Date, getDays, getRatio, dateToString, fr, type Friend, type TableFriend } from '~/utils/gratewizard';

const todayDate = dateToString(new Date());
const baseFriends: Friend[] = [
  { name: 'Bloc 0', date: Block0Date },
  { name: 'Arrivant juste', date: todayDate },
];

const price = useLocalStorage('price', '1');
const discount = useLocalStorage('discount', '0');
const myDate = useLocalStorage<string | undefined>('myDate', undefined);
const isSeller = useLocalStorage('isSeller', true);
const currency = useLocalStorage('currency', 'DU');
const otherName = useLocalStorage('otherName', '');
const otherDate = useLocalStorage<string | undefined>('otherDate', undefined);
const friends = useLocalStorage<Friend[]>('friends', []);

const currencyDisplay = computed(() => currency.value === 'G1' ? '\u011e1' : 'DU');

function getFinalPrice(date: string | undefined): number {
  if ((!date && !myDate.value) || (!date && !otherDate.value)) return Number(price.value);
  const ratio = date
    ? myDate.value && (!isSeller.value || !otherDate.value)
      ? getRatio(date, myDate.value)
      : getRatio(date, otherDate.value)
    : 1;
  const d = Number(discount.value) / 100;
  const p = Number(price.value);
  return (1 - d) * p + d * p * ratio;
}

function addFriend() {
  if (!otherDate.value || !otherName.value) return;
  if (friends.value.some((f) => f.name === otherName.value)) {
    friends.value = friends.value.map((f) =>
      f.name === otherName.value ? { ...f, date: otherDate.value! } : f
    );
  } else {
    friends.value = [...friends.value, { name: otherName.value, date: otherDate.value }];
  }
}

function removeFriend(name: string) {
  friends.value = friends.value.filter((f) => f.name !== name);
}

const isBaseFriend = computed(() =>
  baseFriends.some((f) => f.name === otherName.value && f.date === otherDate.value)
);
const isFriend = computed(() =>
  friends.value.some((f) => f.name === otherName.value && f.date === otherDate.value)
);

const tableItems = computed<TableFriend[]>(() => {
  return baseFriends.concat(friends.value).map((friend) => ({
    ...friend,
    displayName: friend.name.substring(0, 10),
    displayDate: new Date(friend.date).toLocaleDateString('fr-FR', { dateStyle: 'short' }),
    result: fr(getFinalPrice(friend.date)),
    du: getDays(friend.date),
  }));
});
</script>
