From 88159da5b413b1084815e141e792402fa5773b79 Mon Sep 17 00:00:00 2001
From: Aleksey Lobanov <i@likemath.ru>
Date: Tue, 2 Jan 2024 21:32:06 +0000
Subject: [PATCH] feat: Add command line arguments

---
 go.mod                           |  4 ++++
 go.sum                           | 16 ++++++++++++++++
 internal/cui-args/args_reader.go | 22 ++++++++++++++++------
 3 files changed, 36 insertions(+), 6 deletions(-)
 create mode 100644 go.sum

diff --git a/go.mod b/go.mod
index 1820f7f..9e50930 100644
--- a/go.mod
+++ b/go.mod
@@ -1,3 +1,7 @@
 module gitea.likemath.ru/alex/gogrep
 
 go 1.21
+
+require github.com/alexflint/go-arg v1.4.3
+
+require github.com/alexflint/go-scalar v1.1.0 // indirect
diff --git a/go.sum b/go.sum
new file mode 100644
index 0000000..9ef1991
--- /dev/null
+++ b/go.sum
@@ -0,0 +1,16 @@
+github.com/alexflint/go-arg v1.4.3 h1:9rwwEBpMXfKQKceuZfYcwuc/7YY7tWJbFsgG5cAU/uo=
+github.com/alexflint/go-arg v1.4.3/go.mod h1:3PZ/wp/8HuqRZMUUgu7I+e1qcpUbvmS258mRXkFH4IA=
+github.com/alexflint/go-scalar v1.1.0 h1:aaAouLLzI9TChcPXotr6gUhq+Scr8rl0P9P4PnltbhM=
+github.com/alexflint/go-scalar v1.1.0/go.mod h1:LoFvNMqS1CPrMVltza4LvnGKhaSpc3oyLEBUZVhhS2o=
+github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
+github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
+github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
+github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
+github.com/stretchr/testify v1.2.2/go.mod h1:a8OnRcib4nhh0OaRAV+Yts87kKdq0PP7pXfy6kDkUVs=
+github.com/stretchr/testify v1.7.0 h1:nwc3DEeHmmLAfoZucVR881uASk0Mfjw8xYJ99tb5CcY=
+github.com/stretchr/testify v1.7.0/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
+gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
+gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c h1:dUUwHk2QECo/6vqA44rthZ8ie2QXMNeKRTHCNY2nXvo=
+gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
diff --git a/internal/cui-args/args_reader.go b/internal/cui-args/args_reader.go
index f9e4d73..470124c 100644
--- a/internal/cui-args/args_reader.go
+++ b/internal/cui-args/args_reader.go
@@ -2,28 +2,38 @@ package cuiargs
 
 import (
 	"fmt"
+	"log"
 	"regexp"
 
 	models "gitea.likemath.ru/alex/gogrep/internal/models"
+	"github.com/alexflint/go-arg"
 )
 
 // ProcessConsoleArguments fills internal grep config
 // Returns error if arguments filling is correct, but arguments are incorrect
 // Panics and shows info if arguments are invalid
 func ProcessConsoleArguments() (*models.GrepConfigInternal, error) {
+	var args struct {
+		Path    string `arg:"positional" default:".*" help:"extra RegEx for paths to match"`
+		Pattern string `arg:"positional" help:"Regex for lines to match"`
+	}
+	arg.MustParse(&args)
+
+	if args.Pattern == "" {
+		log.Fatalf("No Pattern! Check `gogrep -h`")
+	}
+
 	res := &models.GrepConfigInternal{}
 
 	var err error
-	pathPattern := "git/hook"
-	res.PathPattern, err = regexp.Compile(pathPattern)
+	res.PathPattern, err = regexp.Compile(args.Path)
 	if err != nil {
-		return nil, fmt.Errorf("unable to compile path pattern Regexp: %v", pathPattern)
+		return nil, fmt.Errorf("unable to compile path pattern Regexp: %v", args.Path)
 	}
 
-	textPattern := "the commit"
-	res.TextPattern, err = regexp.Compile(textPattern)
+	res.TextPattern, err = regexp.Compile(args.Pattern)
 	if err != nil {
-		return nil, fmt.Errorf("unable to compile text pattern Regexp: %v", textPattern)
+		return nil, fmt.Errorf("unable to compile text pattern Regexp: %v", args.Pattern)
 	}
 	return res, nil
 }