Implement note parsing

main.go

@@ -1,10 +1,13 @@
 package main
 
 import (
+	"flag"
 	"fmt"
 	"io"
 	"log"
 	"os"
+	"strings"
+	"time"
 )
 
 var Error *log.Logger
@@ -28,7 +31,59 @@ func init() {
 }
 
 func main() {
-	log.Println("Hello, World!")
-	Warning.Println("Hello, World!")
-	Error.Println("Hello, World!")
+	inputFile := flag.String("if", "input", "Input file")
+	flag.Parse()
+	log.Printf("Input file: %s", *inputFile)
+
+	db := DB{
+		path: "data/db.db",
+	}
+	err := db.Open()
+	if err != nil {
+		Error.Printf("Failed opening database: %v", err)
+		return
+	}
+	defer db.Close()
+
+	inputData, err := os.ReadFile(*inputFile)
+	if err != nil {
+		Error.Printf("Failed reading input file: %v", err)
+		return
+	}
+	note, err := ParseNote(string(inputData))
+	if err != nil {
+		Error.Printf("Failed parsing note: %v", err)
+		return
+	}
+	log.Printf("%#v", note)
+}
+
+func ParseNote(data string) (NoteData, error) {
+	res := NoteData{}
+	lines := strings.Split(data, "\n")
+	note := []string{}
+	for _, line := range lines {
+		line = strings.TrimSpace(line)
+		if line == "" {
+			continue
+		}
+		parts := strings.Split(line, ":")
+		log.Printf("%#v", parts)
+		switch parts[0] {
+		case "p":
+			res.Player = parts[1]
+		case "d":
+			var err error
+			res.Date, err = time.Parse(time.DateOnly, parts[1])
+			if err != nil {
+				return res, fmt.Errorf("failed to parse date: %v", err)
+			}
+		case "g":
+			res.Guild = parts[1]
+		default:
+			note = append(note, line)
+		}
+	}
+	res.Note = strings.Join(note, "\n")
+	return res, nil
 }