hook: get push options and pass them

Signed-off-by: dusk <[e-mail]>

Change-Id: sknkqpvptxsxtulrqrrzkwttmxqlykom

hook/hook.go

···
 				Usage: "endpoint for the internal API",
 				Value: "http://localhost:5444",
 			},
+			&cli.StringSliceFlag{
+				Name:  "push-option",
+				Usage: "any push option from git",
+			},
 		},
 		Commands: []*cli.Command{
 			{
···
 	userDid := cmd.String("user-did")
 	userHandle := cmd.String("user-handle")
 	endpoint := cmd.String("internal-api")
+	pushOptions := cmd.StringSlice("push-option")
 
 	payloadReader := bufio.NewReader(os.Stdin)
 	payload, _ := payloadReader.ReadString('\n')
···
 	req.Header.Set("X-Git-Dir", gitDir)
 	req.Header.Set("X-Git-User-Did", userDid)
 	req.Header.Set("X-Git-User-Handle", userHandle)
+	if pushOptions != nil {
+		for _, option := range pushOptions {
+			req.Header.Add("X-Git-Push-Option", option)
+		}
+	}
 
 	resp, err := client.Do(req)
 	if err != nil {

hook/setup.go

···
 
 	hookContent := fmt.Sprintf(`#!/usr/bin/env bash
 # AUTO GENERATED BY KNOT, DO NOT MODIFY
-%s hook -git-dir "$GIT_DIR" -user-did "$GIT_USER_DID" -user-handle "$GIT_USER_HANDLE" -internal-api "%s" post-recieve
+push_options=()
+for ((i=0; i<GIT_PUSH_OPTION_COUNT; i++)); do
+    option_var="GIT_PUSH_OPTION_$i"
+    push_options+=(-push-option "${!option_var}")
+done
+%s hook -git-dir "$GIT_DIR" -user-did "$GIT_USER_DID" -user-handle "$GIT_USER_HANDLE" -internal-api "%s" "${push_options[@]}" post-recieve
 	`, executablePath, config.internalApi)
 
 	return os.WriteFile(hookPath, []byte(hookContent), 0755)