fix scaffolding, start d3

day.ts

@@ -0,0 +1,7 @@
+interface Day {
+    day: number
+    part1(): Day;
+    part2(): Day;
+}
+
+export type { Day } 

main.ts

@@ -1,8 +1,8 @@
-import type { Solvable } from "./solvable.ts";
+import { Day } from "./day.ts";
 
 const solutionFiles = Deno.readDirSync('./solutions');
 
-const solvables: Solvable[] = [];
+const days: Day[] = [];
 
 // need to wrap this stuff in a function to not trip the top level await
 (async () => {
@@ -12,13 +12,21 @@ const solvables: Solvable[] = [];
   }
 
   // only solve the latest day
+  const sortedDays = days.sort((dayL: Day, dayR: Day) => {
+    if (dayL.day < dayR.day) {
+      return -1
+    } else if (dayL.day > dayR.day) {
+      return 1
+    } else {
+      return 0
+    }
+  })
   console.log("Solving latest day only:")
-  const day = solvables[0];
+  const day = sortedDays.reverse()[0];
-  console.log(day)
 
   day.part1()
   day.part2()
 })()
 
 
-export { solvables }
+export { days as solvables }

solutions/01.ts

@@ -1,12 +1,13 @@
 import { solvables } from "../main.ts";
 
-import type { Solvable } from "../solvable.ts";
+import { Day } from "../day.ts";
 import { readInput } from "../utils.ts";
 
-class DayOne implements Solvable {
+class DayImpl implements Day {
+    day = 1
     input = readInput('01')
 
-    public part1(): DayOne {
+    public part1(): Day {
         const vals: [string, number][] = this.input
             .split("\n")
             .map(line => [line[0], Number.parseInt(line.slice(1))]);
@@ -27,7 +28,7 @@ class DayOne implements Solvable {
         return this
     }
 
-    public part2(): DayOne {
+    public part2(): Day {
         const vals: [string, number][] = this.input
             .split("\n")
             .map(line => [line[0], Number.parseInt(line.slice(1))]);
@@ -56,4 +57,4 @@ class DayOne implements Solvable {
     }
 }
 
-solvables.push(new DayOne())
+solvables.push(new DayImpl())

solutions/02.ts

@@ -1,6 +1,6 @@
 import { solvables } from "../main.ts";
 
-import type { Solvable } from "../solvable.ts";
+import type { Day } from "../day.ts";
 import { readInput } from "../utils.ts";
 
 const checkWindow = (input: number): boolean => {
@@ -16,10 +16,11 @@ const checkWindow = (input: number): boolean => {
     return left === right;
 }
 
-class DayTwo implements Solvable {
+class DayImpl implements Day {
+    day = 2
     input = readInput('02')
 
-    public part1(): DayTwo {
+    public part1(): Day {
         const vals: [number, number][] = this.input
             .split(",")
             .map(range => range.trim().split("-")
@@ -31,7 +32,6 @@ class DayTwo implements Solvable {
             for (let i = start; i <= end; i++) {
                 if (String(i).length % 2 === 1) continue
                 if (checkWindow(i)) {
-                    console.log(i)
                     invalid.push(i);
                 }
             }
@@ -42,9 +42,9 @@ class DayTwo implements Solvable {
         return this
     }
 
-    public part2(): DayTwo {
+    public part2(): Day {
         return this
     }
 }
 
-solvables.push(new DayTwo())
+solvables.push(new DayImpl())

solutions/03.ts

@@ -0,0 +1,29 @@
+import { solvables } from "../main.ts";
+
+import type { Day } from "../day.ts";
+import { readInput } from "../utils.ts";
+
+class DayImpl implements Day {
+    day = 3
+    input = readInput('03')
+
+    public part1(): Day {
+        const vals: string[] = this.input
+            .split("\n")
+
+        const result = vals.map(battery => {
+            const sorted = battery.split("").sort()
+            return Number.parseInt(sorted[0]) + Number.parseInt(sorted[1])
+        }).reduce((a, b) => a + b, 0)
+
+        console.log(result)
+
+        return this
+    }
+
+    public part2(): Day {
+        return this
+    }
+}
+
+solvables.push(new DayImpl())

solvable.ts

@@ -1,6 +0,0 @@
-interface Solvable {
-    part1(): Solvable;
-    part2(): Solvable;
-}
-
-export type { Solvable }