feat: parser for getting portal and tick count (#42)

Former-commit-id: 1619ece868b7009a661dcc3b622746cc09981042

1 files changed, 38 insertions, 3 deletions

diff --git a/backend/parser/parser.go b/backend/parser/parser.go
index 6f9a24f..040b94a 100644
--- a/backend/parser/parser.go
+++ b/backend/parser/parser.go
@@ -1,7 +1,42 @@
 package parser
 
-import "mime/multipart"
+import (
+        "bufio"
+        "fmt"
+        "os/exec"
+        "strconv"
+        "strings"
+)
 
-func ProcessDemo(demo *multipart.FileHeader) (scoreCount int, scoreTime int, err error) {
-        return 0, 0, nil
+func ProcessDemo(demoPath string) (int, int, error) {
+        cmd := exec.Command("bash", "-c", fmt.Sprintf(`echo "FEXBash" && ./parser %s`, demoPath))
+        stdout, err := cmd.StdoutPipe()
+        if err != nil {
+                return 0, 0, err
+        }
+        cmd.Start()
+        scanner := bufio.NewScanner(stdout)
+        var cmTicks, portalCount int
+        for scanner.Scan() {
+                line := scanner.Text()
+                if strings.Contains(line, "CM ticks") {
+                        cmTicksStr := strings.TrimSpace(strings.Split(line, ":")[1])
+                        cmTicks, err = strconv.Atoi(cmTicksStr)
+                        if err != nil {
+                                return 0, 0, err
+                        }
+                }
+                if strings.Contains(line, "Portal count") {
+                        portalCountStr := strings.TrimSpace(strings.Split(line, ":")[1])
+                        portalCount, err = strconv.Atoi(portalCountStr)
+                        if err != nil {
+                                return 0, 0, err
+                        }
+                }
+        }
+        err = cmd.Wait()
+        if err != nil {
+                return 0, 0, err
+        }
+        return cmTicks, portalCount, nil
 }