<template>
  <NuxtLayout>
    <div id="root-container" style="margin-top: 5dvh;">
      <div id="main-container">
        <div v-if="!instanceUrl">
          <div v-if="instanceError" style="color: red;">
            {{ instanceError }}
          </div>
          <form @submit="selectInstance">
            <div>
              <label for="instance-url">Instance URL</label>
              <br>
              <input type="url" name="instance-url" id="instance-url" required v-model="instanceUrlInput">
            </div>
            <div>
              <button type="submit">Next</button>
            </div>
          </form>
        </div>
        <div v-else id="auth-form-container">
          <slot />
        </div>
        <div v-if="auth.accessToken.value">
          You're logged in!
          <form @submit="logout">
            <div>
              <label for="logout-password">Password</label>
              <br>
              <input type="password" name="logout-password" id="logout-password" v-model="form.password" required>
            </div>
            <div>
              <button type="submit">Log out</button>
            </div>
          </form>
          <div>
            <button @click="refresh">Refresh</button>
          </div>
          <div>
            <button @click="showUser">Show user</button>
          </div>
          <div>
            <button @click="getUser">Get me</button>
          </div>
        </div>
      </div>
    </div>
  </NuxtLayout>
</template>

<script lang="ts" setup>
import { FetchError } from 'ofetch';

const redirectTo = useRoute().query.redirect_to;

const apiVersion = useRuntimeConfig().public.apiVersion;
const instanceUrl = ref<string | null | undefined>(null);
const instanceUrlInput = ref<string>();
const instanceError = ref<string>();

const auth = useAuth();

if (auth.accessToken.value) {
  //navigateTo(redirectTo ? redirectTo as string : useAppConfig().baseURL as string);
}

onMounted(() => {
  const cookie = useCookie("instance_url").value;
  instanceUrl.value = cookie;
  console.log(cookie);
  console.log("set instance url to:", instanceUrl.value);
});

async function selectInstance(e: Event) {
  e.preventDefault();
  if (instanceUrlInput.value) {
    const instanceUrlObj = new URL(`api/v${apiVersion}/stats`, instanceUrlInput.value.endsWith("/") ? instanceUrlInput.value : instanceUrlInput.value + "/");
    try {
      const res = await $fetch.raw(instanceUrlObj.href);
      console.log("instance res:", res);
      instanceError.value = "";
      const origin = new URL(res.url).origin;
      localStorage.setItem("instanceUrl", origin);
      instanceUrl.value = origin;
      useCookie("instance_url").value = origin;
      useCookie("api_base").value = origin + `/api/v${apiVersion}`;
      localStorage.setItem("apiBase", origin + `/api/v${apiVersion}`);
    } catch (error: any) {
      if (error instanceof FetchError) {
        console.log("Status code:", error.response?.status);
        if (error.response?.status == 404) {
          instanceError.value = "An instance with that URL does not exist or is currently down.";
        }
      }
      console.error("Error:", error);
    }
  }
}

const form = reactive({
  password: ""
});

async function logout(e: Event) {
  e.preventDefault();
  await auth.logout(form.password);
  console.log("logout");
}

async function refresh(e: Event) {
  e.preventDefault();
  await auth.refresh();
  console.log("refreshed");
}

async function getUser(e: Event) {
  e.preventDefault();
  await auth.getUser();
  console.log("user:", auth.user.value);
}

async function showUser(e: Event) {
  e.preventDefault();
  console.log("user:", auth.user.value);
}

</script>

<style>
#root-container, #main-container  {
  display: flex;
  flex-direction: column;
  align-items: center;
}

#auth-form-container,
#auth-form-container form {
  display: flex;
  width: 50dvw;
  flex-direction: column;
  align-items: center;
  gap: 1em;
}

#auth-form-container form {
  text-align: left;
  margin-top: 10dvh;
}
</style>