feat(api): error handling past startup validation

Author: 1zun4

src/lib/Window.svelte

@@ -114,7 +114,7 @@
         />
     {:else if options}
         {#if options.start.account}
-            <MainScreen {client} bind:options />
+            <MainScreen {client} bind:options bind:error />
         {:else}
             <LoginScreen bind:options />
         {/if}
@@ -144,4 +144,4 @@
             background-color: rgba(0, 0, 0, 0.8);
         }
     }
-</style>
+</style>

src/lib/main/ButtonLaunchArea.svelte

@@ -4,11 +4,20 @@
 
     export let text;
     export let active;
+    export let disabled = false;
 
     const dispatch = createEventDispatcher();
 </script>
 
-<button class="button" class:active type="button" on:click={e => dispatch("click", e)}>{text}</button>
+<button
+        class="button"
+        class:active
+        type="button"
+        disabled={disabled}
+        on:click={e => dispatch("click", e)}
+>
+    {text}
+</button>
 
 <style>
     .button {
@@ -38,4 +47,9 @@
     .button.active:hover {
         background-color: #9B2D23;
     }
-</style>
+
+    .button:disabled {
+        opacity: 0.6;
+        cursor: not-allowed;
+    }
+</style>

src/lib/main/LaunchArea.svelte

@@ -7,6 +7,7 @@
     export let mcVersion;
     export let lbVersion;
     export let running;
+    export let canLaunch = true;
 
     const dispatch = createEventDispatcher();
 
@@ -43,7 +44,12 @@
             <ButtonLaunchArea text="Log" active={false} on:click={() => dispatch("showClientLog")} />  
         </div>
     {:else}
-        <ButtonLaunchArea text="Launch LiquidBounce" active={false} on:click={() => dispatch("launch")} />
+        <ButtonLaunchArea
+                text="Launch LiquidBounce"
+                active={false}
+                disabled={!canLaunch}
+                on:click={() => dispatch("launch")}
+        />
     {/if}
 </div>
 
@@ -107,4 +113,4 @@
         grid-template-columns: 1fr max-content;
         column-gap: 10px;
     }
-</style>
+</style>

src/lib/main/MainScreen.svelte

@@ -16,6 +16,7 @@
 
     export let client;
     export let options;
+    export let error;
 
     let running = false;
 
@@ -68,11 +69,21 @@
     }
 
     async function updateData() {
-        const newBuilds = await invoke("request_builds", {
-            client,
-            branch: options.version.branchName,
-            release: !options.launcher.showNightlyBuilds
-        });
+        let newBuilds;
+        try {
+            newBuilds = await invoke("request_builds", {
+                client,
+                branch: options.version.branchName,
+                release: !options.launcher.showNightlyBuilds
+            });
+        } catch (e) {
+            console.error("Failed to request builds:", e);
+            error = {
+                message: "Failed to establish connection with LiquidBounce API",
+                error: e
+            };
+            return;
+        }
 
         newBuilds.forEach(build => {
             const date = new Date(build.date);
@@ -131,6 +142,7 @@
     }
 
     async function runClientWithWarning() {
+        if (!versionState.currentBuild) return;
         const isWarning = options.version.branchName === "legacy" ||
             (options.version.branchName === "nextgen" && options.version.buildId !== -1);
 
@@ -273,9 +285,19 @@
     });
 
     onMount(async () => {
-        let branchesData = await invoke("request_branches", {
-            client
-        });
+        let branchesData;
+        try {
+            branchesData = await invoke("request_branches", {
+                client
+            });
+        } catch (e) {
+            console.error("Failed to request branches:", e);
+            error = {
+                message: "Failed to establish connection with LiquidBounce API",
+                error: e
+            };
+            return;
+        }
         versionState.branches = branchesData.branches.sort((a, b) =>
             (a === branchesData.defaultBranch ? -1 : b === branchesData.defaultBranch ? 1 : 0));
 
@@ -358,6 +380,7 @@
                 }}
                 mcVersion={versionState.currentBuild?.mcVersion || "Loading..."}
                 lbVersion={versionState.currentBuild?.lbVersion || "Loading..."}
+                canLaunch={!!versionState.currentBuild}
                 {running}
                 on:showVersionSelect={() => versionSelectShown = true}
                 on:showClientLog={() => logShown = true}
@@ -366,4 +389,4 @@
         />
         <NewsArea {client} />
     </ContentWrapper>
-</VerticalFlexWrapper>
+</VerticalFlexWrapper>