MapComplete/src/UI/Studio/SchemaBasedArray.svelte

<script lang="ts">
  import EditLayerState from "./EditLayerState"
  import type { ConfigMeta } from "./configMeta"
  import { UIEventSource } from "../../Logic/UIEventSource"
  import SchemaBasedInput from "./SchemaBasedInput.svelte"
  import SchemaBasedField from "./SchemaBasedField.svelte"
  import { TrashIcon } from "@babeard/svelte-heroicons/mini"
  import QuestionPreview from "./QuestionPreview.svelte"
  import SchemaBasedMultiType from "./SchemaBasedMultiType.svelte"
  import ShowConversionMessage from "./ShowConversionMessage.svelte"

  export let state: EditLayerState
  export let schema: ConfigMeta

  let title = schema.path.at(-1)
  let singular = title
  if (title?.endsWith("s")) {
    singular = title.slice(0, title.length - 1)
  }
  let article = "a"
  if (singular?.match(/^[aeoui]/)) {
    article = "an"
  }
  export let path: (string | number)[] = []

  const isTagRenderingBlock = path.length === 1 && path[0] === "tagRenderings"

  if (isTagRenderingBlock) {
    schema = { ...schema }
    schema.description = undefined
  }

  const subparts: ConfigMeta = state
    .getSchemaStartingWith(schema.path)
    .filter((part) => part.path.length - 1 === schema.path.length)

  let messages = state.messagesFor(path)

  const currentValue: UIEventSource<any[]> = state.getStoreFor(path)
  if (currentValue.data === undefined) {
    currentValue.setData([])
  }

  function createItem(valueToSet?: any) {
    if (currentValue.data === undefined) {
      currentValue.setData([])
    }
    currentValue.data.push(valueToSet)
    currentValue.ping()

    if (isTagRenderingBlock) {
      state.highlightedItem.setData({ path: [...path, currentValue.data.length - 1], schema })
    }
  }

  function fusePath(i: number, subpartPath: string[]): (string | number)[] {
    const newPath = [...path, i]
    const toAdd = [...subpartPath]
    for (const part of path) {
      if (toAdd[0] === part) {
        toAdd.splice(0, 1)
      } else {
        break
      }
    }
    newPath.push(...toAdd)
    console.log(
      "Fused path ",
      path.join("."),
      "+",
      i,
      "+",
      subpartPath.join("."),
      "into",
      newPath.join(".")
    )
    return newPath
  }

  function schemaForMultitype() {
    const sch = { ...schema }
    sch.hints.typehint = undefined
    return sch
  }

  function del(i: number) {
    currentValue.data.splice(i, 1)
    currentValue.ping()
  }

  function swap(i: number, j: number) {
    const x = currentValue.data[i]
    currentValue.data[i] = currentValue.data[j]
    currentValue.data[j] = x
    currentValue.ping()
  }

  function moveTo(source: number, target: number) {
    const x = currentValue.data[source]
    currentValue.data.splice(source, 1)
    currentValue.data.splice(target, 0, x)
    currentValue.ping()
  }
</script>

<div class="pl-2">
  <h3>{schema.path.at(-1)}</h3>

  {#if subparts.length > 0}
    <span class="subtle">
      {schema.description}
    </span>
  {/if}
  {#if $currentValue === undefined}
    No array defined
  {:else if $currentValue.length === 0}
    No values are defined
    {#if $messages.length > 0}
      {#each $messages as message}
        <ShowConversionMessage {message} />
      {/each}
    {/if}
  {:else if subparts.length === 0}
    <!-- We need an array of values, so we use the typehint of the _parent_ element as field -->
    {#each $currentValue as value, i}
      <div class="flex w-full">
        <SchemaBasedField {state} {schema} path={fusePath(i, [])} />
        <button
          class="h-fit w-fit rounded-full border border-black p-1"
          on:click={() => {
            del(i)
          }}
        >
          <TrashIcon class="h-4 w-4" />
        </button>
      </div>
    {/each}
  {:else}
    {#each $currentValue as value, i}
      {#if !isTagRenderingBlock}
        <div class="flex items-center justify-between">
          <h3 class="m-0">{singular} {i}</h3>
          <button
            class="h-fit w-fit rounded-full border border-black p-1"
            on:click={() => {
              del(i)
            }}
          >
            <TrashIcon class="h-4 w-4" />
          </button>
        </div>
      {/if}
      <div class="border border-black">
        {#if isTagRenderingBlock}
          <QuestionPreview {state} path={fusePath(i, [])} {schema}>
            <button
              on:click={() => {
                del(i)
              }}
            >
              <TrashIcon class="h-4 w-4" />
              Delete this question
            </button>

            {#if i > 0}
              <button
                on:click={() => {
                  moveTo(i, 0)
                }}
              >
                Move to front
              </button>

              <button
                on:click={() => {
                  swap(i, i - 1)
                }}
              >
                Move up
              </button>
            {/if}
            {#if i + 1 < $currentValue.length}
              <button
                on:click={() => {
                  swap(i, i + 1)
                }}
              >
                Move down
              </button>
              <button
                on:click={() => {
                  moveTo(i, $currentValue.length - 1)
                }}
              >
                Move to back
              </button>
            {/if}
          </QuestionPreview>
        {:else if schema.hints.types}
          <SchemaBasedMultiType {state} path={fusePath(i, [])} schema={schemaForMultitype()} />
        {:else}
          {#each subparts as subpart}
            <SchemaBasedInput {state} path={fusePath(i, [subpart.path.at(-1)])} schema={subpart} />
          {/each}
        {/if}
      </div>
    {/each}
  {/if}
  <div class="flex">
    <button on:click={() => createItem()}>Add {article} {singular}</button>
    {#if path.length === 1 && path[0] === "tagRenderings"}
      <button
        on:click={() => {
          createItem("images")
        }}
      >
        Add a builtin tagRendering
      </button>
    {/if}
    <slot name="extra-button" />
  </div>
</div>