From d8e15a5d5199aef6f543ec47a3cad9379cc652bd Mon Sep 17 00:00:00 2001
From: Brian Buller <brbuller@gmail.com>
Date: Thu, 7 Nov 2019 17:20:20 -0600
Subject: [PATCH] 2018 Day 24 Work

---
 2018/day24/day24.go | 93 +++++++++++++++++++++++++++++++++++++++++++--
 1 file changed, 89 insertions(+), 4 deletions(-)

diff --git a/2018/day24/day24.go b/2018/day24/day24.go
index d514d9b..8c07e21 100644
--- a/2018/day24/day24.go
+++ b/2018/day24/day24.go
@@ -1,19 +1,104 @@
 package main
 
-import "fmt"
+import (
+	"bufio"
+	"fmt"
+	"os"
+	"strings"
+)
 
-const ()
+const (
+	ArmyTypeImmune = 1 << iota
+	ArmyTypeInfection
+)
 
 func main() {
-	fmt.Println("vim-go")
+	inp := StdinToStringSlice()
+	immune, infect := ParseInput(inp)
+
+}
+
+func ParseInput(inp []string) ([]Army, []Army) {
+	var immune, infection []Army
+	var tp int
+	for _, v := range inp {
+		if v == "" {
+			continue
+		}
+		if v == "Immune System:" {
+			tp = ArmyTypeImmune
+			continue
+		} else if v == "Infection:" {
+			tp = ArmyTypeInfection
+			continue
+		}
+		switch tp {
+		case ArmyTypeImmune:
+			immune = append(immune, *NewArmy(v, tp))
+		case ArmyTypeInfection:
+			infection = append(infection, *NewArmy(v, tp))
+		}
+	}
+	return immune, infection
 }
 
 type AttackType int
 
 type Army struct {
+	tp         int
 	units      int
 	hp         int
+	immunities []string
 	weaknesses []string
+	damageType string
 	strength   int
-	dam
+	init       int
+}
+
+func NewArmy(inp string, tp int) *Army {
+	a := new(Army)
+	a.tp = tp
+
+	// Pull the parenthetical out, if one is there
+	var prnth, other string
+	var inPrnth bool
+	var ptsOfOther int
+	for _, v := range strings.Fields(inp) {
+		if len(v) > 0 && v[len(v)-1] == ')' {
+			prnth = prnth + " " + v
+			inPrnth = false
+			continue
+		} else if len(v) > 0 && v[0] == '(' {
+			inPrnth = true
+			prnth = v
+			continue
+		}
+		if inPrnth {
+			prnth = prnth + " " + v
+		} else {
+			if len(other) > 0 {
+				other = other + " "
+			}
+			other = other + v
+			ptsOfOther++
+		}
+	}
+	_, err := fmt.Sscanf(other, "%d units each with %d hit points with an attack that does %d %s damage at initiative %d", &a.units, &a.hp, &a.strength, &a.damageType, &a.init)
+	if err != nil {
+		panic(err)
+	}
+	return a
+}
+
+func (a *Army) Power() int {
+	return a.units * a.strength
+}
+
+func StdinToStringSlice() []string {
+	var input []string
+	scanner := bufio.NewScanner(os.Stdin)
+	for scanner.Scan() {
+		input = append(input, scanner.Text())
+	}
+	return input
 }