templates: move static assets to the templates crate

It makes more sense to keep CSS near the templates, and the
client-side JavaScript code too, since it depends on the DOM structure
to work. Additionally, the overhead of `include_dir!()` is almost
completely mitigated by the fact that this is a separate crate that
isn't recompiled often.

The linking stage, however, is still expected to take a little bit
long. But I doubt it'd be longer than what it was before, since it's
the same exact files that get linked into the app.

4 files changed, 273 insertions, 0 deletions

diff --git a/kittybox-rs/templates/javascript/src/indieauth.ts b/kittybox-rs/templates/javascript/src/indieauth.ts
new file mode 100644
index 0000000..01732b7
--- /dev/null
+++ b/kittybox-rs/templates/javascript/src/indieauth.ts
@@ -0,0 +1,150 @@
+import { unreachable } from "./lib.js";
+
+const WEBAUTHN_TIMEOUT = 60 * 1000;
+
+interface KittyboxWebauthnPreRegistrationData {
+  challenge: string,
+  rp: PublicKeyCredentialRpEntity,
+  user: {
+    cred_id: string,
+    name: string,
+    displayName: string
+  }
+}
+
+async function webauthn_create_credential() {
+  const response = await fetch("/.kittybox/webauthn/pre_register");
+  const { challenge, rp, user }: KittyboxWebauthnPreRegistrationData = await response.json();
+
+  return await navigator.credentials.create({
+    publicKey: {
+      challenge: Uint8Array.from(challenge, (c) => c.charCodeAt(0)),
+      rp: rp,
+      user: {
+        id: Uint8Array.from(user.cred_id, (c) => c.charCodeAt(0)),
+        name: user.name,
+        displayName: user.displayName
+      },
+      pubKeyCredParams: [{alg: -7, type: "public-key"}],
+      authenticatorSelection: {},
+      timeout: WEBAUTHN_TIMEOUT,
+      attestation: "none"
+    }
+  });
+}
+
+interface KittyboxWebauthnCredential {
+  id: string,
+  type: "public-key"
+}
+
+interface KittyboxWebauthnPreAuthenticationData {
+  challenge: string,
+  credentials: KittyboxWebauthnCredential[]
+}
+
+async function webauthn_authenticate() {
+  const response = await fetch("/.kittybox/webauthn/pre_auth");
+  const { challenge, credentials } = await response.json() as unknown as KittyboxWebauthnPreAuthenticationData;
+
+  try {
+    return await navigator.credentials.get({
+      publicKey: {
+        challenge: Uint8Array.from(challenge, (c) => c.charCodeAt(0)),
+        allowCredentials: credentials.map(cred => ({
+          id: Uint8Array.from(cred.id, c => c.charCodeAt(0)),
+          type: cred.type
+        })),
+        timeout: WEBAUTHN_TIMEOUT
+      }
+    })
+  } catch (e) {
+    console.error("WebAuthn authentication failed:", e);
+    alert("Using your authenticator failed. (Check the DevTools for details)");
+    throw e;
+  }
+}
+
+export async function submit_handler(e: SubmitEvent) {
+  e.preventDefault();
+  if (e.target != null && e.target instanceof HTMLFormElement) {
+    const form = e.target as HTMLFormElement;
+
+    let scopes: Array<string>;
+    let scope_elem = form.elements.namedItem("scope");
+    if (scope_elem == null) {
+      scopes = []
+    } else if (scope_elem instanceof Element) {
+      scopes = ([scope_elem] as Array<HTMLInputElement>)
+        .filter((e: HTMLInputElement) => e.checked)
+        .map((e: HTMLInputElement) => e.value);
+    } else if (scope_elem instanceof RadioNodeList) {
+      scopes = (Array.from(scope_elem) as Array<HTMLInputElement>)
+        .filter((e: HTMLInputElement) => e.checked)
+        .map((e: HTMLInputElement) => e.value);
+    } else {
+      unreachable("HTMLFormControlsCollection returned something that's not null, Element or RadioNodeList")
+    }
+
+    const authorization_request = {
+      response_type: (form.elements.namedItem("response_type") as HTMLInputElement).value,
+      client_id: (form.elements.namedItem("client_id") as HTMLInputElement).value,
+      redirect_uri: (form.elements.namedItem("redirect_uri") as HTMLInputElement).value,
+      state: (form.elements.namedItem("state") as HTMLInputElement).value,
+      code_challenge: (form.elements.namedItem("code_challenge") as HTMLInputElement).value,
+      code_challenge_method: (form.elements.namedItem("code_challenge_method") as HTMLInputElement).value,
+      // I would love to leave that as a list, but such is the form of
+      // IndieAuth.  application/x-www-form-urlencoded doesn't have
+      // lists, so scopes are space-separated instead. It is annoying.
+      scope: scopes.length > 0 ? scopes.join(" ") : undefined,
+    };
+
+    let credential = null;
+    switch ((form.elements.namedItem("auth_method") as HTMLInputElement).value) {
+    case "password":
+      credential = (form.elements.namedItem("user_password") as HTMLInputElement).value;
+      if (credential.length == 0) {
+        alert("Please enter a password.")
+        return
+      }
+      break;
+    case "webauthn":
+      // credential = await webauthn_authenticate();
+      alert("WebAuthn isn't implemented yet!")
+      return
+      break
+    default:
+      alert("Please choose an authentication method.")
+      return
+    }
+
+    console.log("Authorization request:", authorization_request);
+    console.log("Authentication method:", credential);
+
+    const body = JSON.stringify({
+      request: authorization_request,
+      authorization_method: credential
+    });
+    console.log(body);
+    
+    const response = await fetch(form.action, {
+      method: form.method,
+      body: body,
+      headers: {
+        "Content-Type": "application/json"
+      }
+    });
+
+    if (response.ok) {
+      let location = response.headers.get("Location");
+      if (location != null) {
+        window.location.href = location
+      } else {
+        throw "Error: didn't return a location"
+      }
+    }
+  } else {
+    return
+  }
+
+}
diff --git a/kittybox-rs/templates/javascript/src/lib.ts b/kittybox-rs/templates/javascript/src/lib.ts
new file mode 100644
index 0000000..38ba65b
--- /dev/null
+++ b/kittybox-rs/templates/javascript/src/lib.ts
@@ -0,0 +1,3 @@
+export function unreachable(msg: string): never {
+  throw new Error(msg);
+}
diff --git a/kittybox-rs/templates/javascript/src/onboarding.ts b/kittybox-rs/templates/javascript/src/onboarding.ts
new file mode 100644
index 0000000..0b455eb
--- /dev/null
+++ b/kittybox-rs/templates/javascript/src/onboarding.ts
@@ -0,0 +1,120 @@
+const firstOnboardingCard = "intro";
+
+function switchOnboardingCard(card: string) {
+  (Array.from(document.querySelectorAll("form.onboarding > fieldset")) as HTMLElement[])
+    .map((node: HTMLElement) => {
+      if (node.id == card) {
+        node.style.display = "block";
+      } else {
+        node.style.display = "none";
+      }
+    });
+
+  (Array.from(document.querySelectorAll("form.onboarding > ul#progressbar > li")) as HTMLElement[])
+    .map(node => {
+      if (node.id == card) {
+        node.classList.add("active")
+      } else {
+        node.classList.remove("active")
+      }
+    });
+};
+
+interface Window {
+  kittybox_onboarding: {
+    switchOnboardingCard: (card: string) => void
+  }
+}
+
+window.kittybox_onboarding = {
+  switchOnboardingCard
+};
+
+(document.querySelector("form.onboarding > ul#progressbar") as HTMLElement).style.display = "";
+switchOnboardingCard(firstOnboardingCard);
+
+function switchCardOnClick(event: MouseEvent) {
+  if (event.target instanceof HTMLElement) {
+    if (event.target.dataset.card !== undefined) {
+      switchOnboardingCard(event.target.dataset.card)
+    }
+  }
+}
+
+function multiInputAddMore(event: (MouseEvent | { target: HTMLElement })) {
+  if (event.target instanceof HTMLElement) {
+    let parent = event.target.parentElement;
+    if (parent !== null) {
+      let template = (parent.querySelector("template") as HTMLTemplateElement).content.cloneNode(true);
+      parent.prepend(template);
+    }
+  }
+}
+
+(Array.from(
+  document.querySelectorAll(
+    "form.onboarding > fieldset button.switch_card"
+  )
+) as HTMLButtonElement[])
+  .map(button => {
+    button.addEventListener("click", switchCardOnClick)
+  });
+
+(Array.from(
+  document.querySelectorAll(
+    "form.onboarding > fieldset div.multi_input > button.add_more"
+  )
+) as HTMLButtonElement[])
+  .map(button => {
+    button.addEventListener("click", multiInputAddMore)
+    multiInputAddMore({ target: button });
+  });
+
+const form = document.querySelector("form.onboarding") as HTMLFormElement;
+console.log(form);
+form.onsubmit = async (event: SubmitEvent) => {
+    console.log(event);
+    event.preventDefault();
+    const form = event.target as HTMLFormElement;
+    const json = {
+        user: {
+          type: ["h-card"],
+          properties: {
+            name: [(form.querySelector("#hcard_name") as HTMLInputElement).value],
+            pronoun: (Array.from(
+              form.querySelectorAll("#hcard_pronouns")
+            ) as HTMLInputElement[])
+              .map(input => input.value).filter(i => i != ""),
+            url: (Array.from(form.querySelectorAll("#hcard_url")) as HTMLInputElement[])
+              .map(input => input.value).filter(i => i != ""),
+            note: [(form.querySelector("#hcard_note") as HTMLInputElement).value]
+          }
+        },
+        first_post: {
+          type: ["h-entry"],
+          properties: {
+            content: [(form.querySelector("#first_post_content") as HTMLTextAreaElement).value]
+          }
+        },
+      blog_name: (form.querySelector("#blog_name") as HTMLInputElement).value,
+      feeds: (Array.from(
+        form.querySelectorAll(".multi_input#custom_feeds > fieldset.feed")
+      ) as HTMLElement[])
+        .map(form => {
+          return {
+            name: (form.querySelector("#feed_name") as HTMLInputElement).value,
+            slug: (form.querySelector("#feed_slug") as HTMLInputElement).value
+          }
+        }).filter(feed => feed.name == "" || feed.slug == "")
+    };
+
+    await fetch("/.kittybox/onboarding", {
+        method: "POST",
+        body: JSON.stringify(json),
+        headers: { "Content-Type": "application/json" }
+    }).then(response => {
+        if (response.status == 201) {
+            window.location.href = window.location.href;
+        }
+    })
+}
diff --git a/kittybox-rs/templates/javascript/src/webauthn/register.ts b/kittybox-rs/templates/javascript/src/webauthn/register.ts
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/kittybox-rs/templates/javascript/src/webauthn/register.ts