<template>
  <div class="container section" id="error-wrapper">
    <div class="column">
      <section>
        <div class="picture-wrapper">
          <picture>
            <source
              srcset="
                /img/pics/error-480w.webp  1x,
                /img/pics/error-1024w.webp 2x
              "
              type="image/webp"
            />
            <source
              srcset="/img/pics/error-480w.jpg 1x, /img/pics/error-1024w.jpg 2x"
              type="image/jpeg"
            />

            <img
              :src="`/img/pics/error-480w.jpg`"
              alt=""
              width="480"
              height="312"
              loading="lazy"
            />
          </picture>
        </div>
        <b-message type="is-danger" class="is-size-5">
          <h1>
            {{
              $t(
                "An error has occured. Sorry about that. You may try to reload the page."
              )
            }}
          </h1>
        </b-message>
      </section>
      <b-loading v-if="$apollo.loading" :active.sync="$apollo.loading" />
      <section v-else>
        <h2 class="is-size-5">{{ $t("What can I do to help?") }}</h2>
        <p class="content">
          <i18n
            tag="span"
            path="{instanceName} is an instance of {mobilizon_link}, a free software built with the community."
          >
            <b slot="instanceName">{{ config.name }}</b>
            <a slot="mobilizon_link" href="https://joinmobilizon.org">{{
              $t("Mobilizon")
            }}</a>
          </i18n>
          {{
            $t(
              "We improve this software thanks to your feedback. To let us know about this issue, two possibilities (both unfortunately require user account creation):"
            )
          }}
        </p>
        <div class="content">
          <ul>
            <li>
              <a
                href="https://framacolibri.org/c/mobilizon/39"
                target="_blank"
                >{{ $t("Open a topic on our forum") }}</a
              >
            </li>
            <li>
              <a
                href="https://framagit.org/framasoft/mobilizon/-/issues/new?issuable_template=Bug"
                target="_blank"
                >{{
                  $t("Open an issue on our bug tracker (advanced users)")
                }}</a
              >
            </li>
          </ul>
        </div>
        <p class="content">
          {{
            $t(
              "Please add as many details as possible to help identify the problem."
            )
          }}
        </p>

        <details>
          <summary class="is-size-5">{{ $t("Technical details") }}</summary>
          <p>{{ $t("Error message") }}</p>
          <pre>{{ error }}</pre>
          <p>{{ $t("Error stacktrace") }}</p>
          <pre>{{ error.stack }}</pre>
        </details>
        <p>
          {{
            $t(
              "The technical details of the error can help developers solve the problem more easily. Please add them to your feedback."
            )
          }}
        </p>
        <div class="buttons">
          <b-tooltip
            :label="tooltipConfig.label"
            :type="tooltipConfig.type"
            :active="copied !== false"
            always
          >
            <b-button @click="copyErrorToClipboard">{{
              $t("Copy details to clipboard")
            }}</b-button>
          </b-tooltip>
        </div>
      </section>
    </div>
  </div>
</template>
<script lang="ts">
import { CONTACT } from "@/graphql/config";
import { Component, Prop, Vue } from "vue-property-decorator";

@Component({
  apollo: {
    config: {
      query: CONTACT,
    },
  },
  metaInfo() {
    return {
      // eslint-disable-next-line @typescript-eslint/ban-ts-comment
      // @ts-ignore
      title: this.$t("Error") as string,
      titleTemplate: "%s | Mobilizon",
    };
  },
})
export default class ErrorComponent extends Vue {
  @Prop({ required: true, type: Error }) error!: Error;

  copied: "success" | "error" | false = false;

  config!: { contact: string | null; name: string };

  async copyErrorToClipboard(): Promise<void> {
    try {
      if (window.isSecureContext && navigator.clipboard) {
        await navigator.clipboard.writeText(this.fullErrorString);
      } else {
        this.fallbackCopyTextToClipboard(this.fullErrorString);
      }
      this.copied = "success";
      setTimeout(() => {
        this.copied = false;
      }, 2000);
    } catch (e) {
      this.copied = "error";
      console.error("Unable to copy to clipboard");
      console.error(e);
    }
  }

  get fullErrorString(): string {
    return `${this.error.name}: ${this.error.message}\n\n${this.error.stack}`;
  }

  get tooltipConfig(): { label: string | null; type: string | null } {
    if (this.copied === "success")
      return {
        label: this.$t("Error details copied!") as string,
        type: "is-success",
      };
    if (this.copied === "error")
      return {
        label: this.$t("Unable to copy to clipboard") as string,
        type: "is-danger",
      };
    return { label: null, type: "is-primary" };
  }

  private fallbackCopyTextToClipboard(text: string): void {
    const textArea = document.createElement("textarea");
    textArea.value = text;

    // Avoid scrolling to bottom
    textArea.style.top = "0";
    textArea.style.left = "0";
    textArea.style.position = "fixed";

    document.body.appendChild(textArea);
    textArea.focus();
    textArea.select();

    document.execCommand("copy");

    document.body.removeChild(textArea);
  }
}
</script>
<style lang="scss" scoped>
#error-wrapper {
  width: 100%;
  background: $white;

  section {
    margin-bottom: 2rem;
  }

  .picture-wrapper {
    text-align: center;
  }

  details {
    summary:hover {
      cursor: pointer;
    }
  }
}
</style>
