refactor: separate data processing and printing - `print.go` no longer handles

retrieving atime and other data operations. It just receives info and prints. -
New `statistics.go` gather formulae and cask struct and spits out a unified data
structure for `print.go` to use. Getting atime and reverse dependencies are
moved here as well. - `info.go` is now `brewget.go`, since what it does is
basically running `brew info` and `brew uses` commands to gather raw data.

1 files changed, 70 insertions, 0 deletions

diff --git a/statistics.go b/statistics.go
new file mode 100644
index 0000000..428d19c
--- /dev/null
+++ b/statistics.go
@@ -0,0 +1,70 @@
+package main
+
+import (
+	"os"
+	"path/filepath"
+	"syscall"
+	"time"
+)
+
+type statistics struct {
+	Name string;
+	Type string;		//formula or cask
+	Desc string;
+	Outdated bool;
+
+	InstalledAsDependency bool;
+	InstalledOnRequest bool;
+	LastAccessTime time.Time;
+
+	InstalledVersion string;
+	Homepage string;
+	License string;
+
+	ReverseDependencies []string;
+}
+
+func UnifyInfo(formula *FormulaInfo, cask *CaskInfo, pkgName string) (*statistics) {
+	var statObject statistics
+
+	// === formula/cask specific === //
+
+	if formula != nil {
+		statObject.Name = formula.Name
+		statObject.Type = "formula"
+		statObject.Desc = formula.Desc
+		statObject.Homepage = formula.Homepage
+		statObject.License = formula.License
+		statObject.Outdated = formula.Outdated
+
+		// if installed
+		if len(formula.Installed) != 0 {
+			statObject.InstalledVersion = formula.Installed[0].Version
+			statObject.InstalledAsDependency = formula.Installed[0].InstalledAsDependency
+			statObject.InstalledOnRequest = formula.Installed[0].InstalledOnRequest
+		}
+
+		// get reverse dependencies
+		statObject.ReverseDependencies = GetBrewUses(pkgName)
+	} else if cask != nil {
+		statObject.Name = cask.Token
+		statObject.Type = "cask"
+		statObject.Desc = cask.Desc
+		statObject.Homepage = cask.Homepage
+		statObject.InstalledVersion = cask.Installed
+		statObject.Outdated = cask.Outdated
+	}
+
+	// === general === //
+
+	// get system atime
+	binPath := filepath.Join("/opt/homebrew/bin", pkgName)
+	info, err := os.Stat(binPath)
+	if err != nil {
+		return nil // skip if no binary is found
+	}
+	atime := info.Sys().(*syscall.Stat_t).Atimespec
+	statObject.LastAccessTime = time.Unix(atime.Unix())
+
+	return &statObject
+}