<script setup lang="ts">
import WorkflowDocumentationTabs from "@/components/workflows/WorkflowDocumentationTabs.vue";
import { onMounted, reactive, ref, watch } from "vue";
import { GitRepository, requiredRepositoryFiles } from "@/utils/GitRepository";
import FontAwesomeIcon from "@/components/FontAwesomeIcon.vue";

import { useRouter } from "vue-router";
import { Toast } from "bootstrap";
import { useWorkflowStore } from "@/stores/workflows";
import type { WorkflowIn } from "@/client/workflow";
import { useWorkflowExecutionStore } from "@/stores/workflowExecutions";
import ParameterSchemaFormComponent from "@/components/parameter-schema/ParameterSchemaFormComponent.vue";
import BootstrapToast from "@/components/BootstrapToast.vue";
import type { WorkflowParameters } from "@/types/WorkflowParameters";

const props = defineProps<{
  wid: string;
}>();

const router = useRouter();
const workflowStore = useWorkflowStore();
const executionRepository = useWorkflowExecutionStore();

const workflowState = reactive<{
  workflow?: WorkflowIn;
  loading: boolean;
  changelogMarkdown?: string;
  descriptionMarkdown?: string;
  usageMarkdown?: string;
  outputMarkdown?: string;
  parameterSchema?: Record<string, never>;
  repo: GitRepository;
}>({
  loading: true,
  workflow: undefined,
  repo: GitRepository.buildRepository(
    "https://github.de/eample/example",
    "0123456789abcdef",
  ),
});

const workflowExecutionState = reactive<{
  loading: boolean;
  errorType?: string;
}>({
  loading: false,
  errorType: undefined,
});

const showDocumentation = ref<boolean>(true);
let errorToast: Toast | null = null;

function downloadVersionFiles() {
  if (workflowState.workflow) {
    workflowState.loading = true;
    Promise.all(
      requiredRepositoryFiles(workflowState.workflow.modes).map((file) =>
        workflowState.repo.downloadFile(file).then((response) => {
          if (file.includes("README")) {
            workflowState.descriptionMarkdown = response.data;
          } else if (file.includes("CHANGELOG")) {
            workflowState.changelogMarkdown = response.data;
          } else if (file.includes("usage")) {
            workflowState.usageMarkdown = response.data;
          } else if (file.includes("output")) {
            workflowState.outputMarkdown = response.data;
          } else if (file.endsWith("json")) {
            workflowState.parameterSchema = response.data;
          }
        }),
      ),
    ).finally(() => {
      workflowState.loading = false;
    });
  }
}

watch(
  () => workflowState.workflow,
  (newWorkflow, oldWorkflow) => {
    if (
      newWorkflow &&
      newWorkflow?.git_commit_hash !== oldWorkflow?.git_commit_hash
    ) {
      workflowState.repo = GitRepository.buildRepository(
        newWorkflow.repository_url,
        newWorkflow.git_commit_hash,
        newWorkflow.token ?? undefined,
      );
      downloadVersionFiles();
    }
  },
);

function startWorkflow(
  parameters: WorkflowParameters,
  notes?: string,
  logs_s3_path?: string,
  debug_s3_path?: string,
  provenance_s3_path?: string,
) {
  if (workflowState.workflow) {
    errorToast?.hide();
    workflowExecutionState.loading = true;
    executionRepository
      .startDevExecution({
        git_commit_hash: workflowState.workflow.git_commit_hash,
        parameters: parameters,
        logs_s3_path: logs_s3_path ? logs_s3_path : undefined,
        debug_s3_path: debug_s3_path ? debug_s3_path : undefined,
        provenance_s3_path: provenance_s3_path ? provenance_s3_path : undefined,
        repository_url: workflowState.workflow.repository_url,
        token: workflowState.workflow.token ?? undefined,
        mode:
          (workflowState.workflow.modes ?? []).length > 0
            ? {
                name: "",
                // eslint-disable-next-line @typescript-eslint/no-non-null-assertion
                entrypoint: workflowState.workflow.modes![0].entrypoint,
                // eslint-disable-next-line @typescript-eslint/no-non-null-assertion
                schema_path: workflowState.workflow.modes![0].schema_path,
              }
            : undefined,
      })
      .then(() => {
        router.push({
          name: "workflow-executions",
        });
      })
      .catch((err) => {
        console.error(err);
        if (err.body["detail"].includes("workflow execution limit")) {
          workflowExecutionState.errorType = "limit";
        }
        errorToast?.show();
      })
      .finally(() => {
        workflowExecutionState.loading = false;
      });
  }
}

onMounted(() => {
  errorToast = new Toast("#arbitraryWorkflowExecutionViewErrorToast");
  workflowStore.getArbitraryWorkflow(props.wid).then((workflow) => {
    workflowState.workflow = workflow;
  });
});
</script>

<template>
  <bootstrap-toast
    toast-id="arbitraryWorkflowExecutionViewErrorToast"
    color-class="danger"
  >
    <template #default> Error starting workflow </template>
    <template #body>
      <template v-if="workflowExecutionState.errorType === 'limit'">
        You have too many active workflow executions to start a new one.
      </template>
      <template v-else>
        There was an error with starting the workflow execution. Look in the
        console for more information.
      </template>
    </template>
  </bootstrap-toast>
  <template v-if="workflowState.workflow">
    <div class="row m-1 border-bottom mb-4">
      <h1 class="mb-2">Arbitrary Workflow</h1>
    </div>
    <h5>
      Git Repository:
      <a target="_blank" :href="workflowState.workflow?.repository_url">{{
        workflowState.workflow?.repository_url
      }}</a>
    </h5>
    <h5 :class="{ 'mb-5': workflowState.workflow.modes!.length < 1 }">
      Git Commit Hash: {{ workflowState.workflow?.git_commit_hash }}
    </h5>
    <template v-if="workflowState.workflow.modes!.length > 0">
      <h5>Entrypoint: {{ workflowState.workflow?.modes?.[0].entrypoint }}</h5>
      <h5 class="mb-5">
        Schema File:
        {{ workflowState.workflow?.modes?.[0].schema_path }}
      </h5>
    </template>
    <div class="d-flex justify-content-center mb-5" v-if="showDocumentation">
      <a
        role="button"
        href="#"
        class="btn btn-success btn-lg mx-auto fs-4"
        :class="{ disabled: !workflowState.parameterSchema }"
        @click="showDocumentation = false"
      >
        <font-awesome-icon icon="fa-solid fa-rocket" class="me-2" />
        <span class="align-middle">Launch</span>
      </a>
    </div>
    <workflow-documentation-tabs
      v-if="showDocumentation"
      :loading="workflowState.loading"
      :output-markdown="workflowState.outputMarkdown"
      :usage-markdown="workflowState.usageMarkdown"
      :description-markdown="workflowState.descriptionMarkdown"
      :changelog-markdown="workflowState.changelogMarkdown"
      :parameter-schema="workflowState.parameterSchema"
    />
    <parameter-schema-form-component
      v-else
      :loading="workflowExecutionState.loading"
      :schema="workflowState.parameterSchema"
      @start-workflow="startWorkflow"
    />
  </template>
  <template v-else>
    <div class="text-center fs-1 mt-5">
      <font-awesome-icon
        icon="fa-solid fa-magnifying-glass"
        class="my-5 fs-0"
        style="color: var(--bs-secondary)"
      />
      <p class="my-5">Could not find your workflow.<br />Please re-enter it.</p>
      <router-link :to="{ name: 'workflows' }" class="mt-5">Back</router-link>
    </div>
  </template>
</template>

<style scoped></style>