Configure dagger

MODULE.bazel

@@ -5,6 +5,15 @@ module(
 bazel_dep(name = "rules_java", version = "7.7.0")
 bazel_dep(name = "rules_jvm_external", version = "6.1")
 
+http_archive = use_repo_rule("@bazel_tools//tools/build_defs/repo:http.bzl", "http_archive")
+
+http_archive(
+    name = "dagger",
+    sha256 = "4062fa2cda8dab32d1961fb10ed50f40aca759149efb64dd5a08077a6fcb2fbc",
+    strip_prefix = "dagger-dagger-2.52",
+    url = "https://github.com/google/dagger/archive/dagger-2.52.zip",
+)
+
 maven = use_extension("@rules_jvm_external//:extensions.bzl", "maven")
 maven.install(
     artifacts = [
@@ -24,6 +33,9 @@ maven.install(
         "software.amazon.awssdk:dynamodb-enhanced:2.26.19",
         "com.google.guava:guava:33.2.1-jre",
         "com.amazonaws:aws-lambda-java-core:1.2.3",
+        "com.google.dagger:dagger:2.52",
+        "com.google.dagger:dagger-compiler:2.52",
+        "com.google.dagger:dagger-producers:2.52",
     ],
 )
 use_repo(maven, "maven")

immersion_tracker_api/BUILD.bazel

@@ -1,10 +1,27 @@
 load("@contrib_rules_jvm//java:defs.bzl", "JUNIT5_DEPS", "java_test_suite")
+load("@dagger//:workspace_defs.bzl", "dagger_rules")
+
+dagger_rules()
+
+HANDLERS = glob(["src/main/java/**/*Handler.java"])
+
+java_library(
+    name = "lib",
+    srcs = glob(
+        ["src/main/java/**/*.java"],
+        exclude = HANDLERS,
+    ),
+    deps = [
+        ":dagger",
+    ],
+)
 
 java_binary(
     name = "get-progress-handler",
     srcs = glob(["src/main/java/com/jordansimsmith/immersiontracker/GetProgressHandler.java"]),
     create_executable = False,
     deps = [
+        ":lib",
         "@maven//:com_amazonaws_aws_lambda_java_core",
     ],
 )

immersion_tracker_api/src/main/java/com/jordansimsmith/immersiontracker/GetProgressHandler.java

@@ -4,8 +4,14 @@
 import com.amazonaws.services.lambda.runtime.RequestHandler;
 
 public class GetProgressHandler implements RequestHandler<Object, String> {
+  private final Hello hello;
+
+  public GetProgressHandler() {
+    this.hello = DaggerImmersionTrackerComponent.create().hello();
+  }
+
   @Override
   public String handleRequest(Object s, Context context) {
-    return "hello, world";
+    return hello.hello();
   }
 }

immersion_tracker_api/src/main/java/com/jordansimsmith/immersiontracker/Hello.java

@@ -0,0 +1,13 @@
+package com.jordansimsmith.immersiontracker;
+
+import javax.inject.Inject;
+
+public class Hello {
+
+  @Inject
+  public Hello() {}
+
+  public String hello() {
+    return "hello, world";
+  }
+}

immersion_tracker_api/src/main/java/com/jordansimsmith/immersiontracker/ImmersionTrackerComponent.java

@@ -0,0 +1,8 @@
+package com.jordansimsmith.immersiontracker;
+
+import dagger.Component;
+
+@Component
+public interface ImmersionTrackerComponent {
+  Hello hello();
+}