Add contributing file, rename some files

src/app/util/modal.ts

@@ -0,0 +1,48 @@
+import type {Component} from "svelte"
+import {writable} from "svelte/store"
+import {randomId, always, assoc, Emitter} from "@welshman/lib"
+import {goto} from "$app/navigation"
+
+export type ModalOptions = {
+  drawer?: boolean
+  fullscreen?: boolean
+  replaceState?: boolean
+  path?: string
+}
+
+export type Modal = {
+  id: string
+  component: Component
+  props: Record<string, any>
+  options: ModalOptions
+}
+
+export const emitter = new Emitter()
+
+export const modals = writable<Record<string, Modal>>({})
+
+export const pushModal = (
+  component: Component<any>,
+  props: Record<string, any> = {},
+  options: ModalOptions = {},
+) => {
+  const id = randomId()
+  const path = options.path || ""
+
+  modals.update(assoc(id, {id, component, props, options}))
+
+  goto(path + "#" + id, {replaceState: options.replaceState})
+
+  return id
+}
+
+export const pushDrawer = (
+  component: Component<any>,
+  props: Record<string, any> = {},
+  options: ModalOptions = {},
+) => pushModal(component, props, {...options, drawer: true})
+
+export const clearModals = () => {
+  modals.update(always({}))
+  emitter.emit("close")
+}