generate_import.go

package main

import (
	"fmt"
	"log"

	gohcl2 "github.com/hashicorp/hcl/v2/gohcl"
	hcl2parse "github.com/hashicorp/hcl/v2/hclparse"
)

type topLevel struct {
	Resources []resource `hcl:"resource,block"`
}

type resource struct {
	Type   string            `hcl:"type,label"`
	Name   string            `hcl:"name,label"`
	Config map[string]string `hcl:",remain"`
}

func main() {
	files := []string{
		"project_iam_member.tf",
		"project_iam_custom_role.tf",
		"service_account.tf",
	}

	for _, f := range files {

		parser := hcl2parse.NewParser()
		p, parseDiags := parser.ParseHCLFile(f)
		if parseDiags.HasErrors() {
			log.Fatal(parseDiags.Error())
		}

		var raw topLevel
		decodeDiags := gohcl2.DecodeBody(p.Body, nil, &raw)
		if decodeDiags.HasErrors() {
			log.Fatal(decodeDiags.Error())
		}

		for _, r := range raw.Resources {
			fmt.Printf("terraform import %s.%s ", r.Type, r.Name)
			if r.Type == "google_project_iam_member" {
				fmt.Printf("\"%s %s %s\"\n", r.Config["project"], r.Config["role"], r.Config["member"])
			} else if r.Type == "google_project_iam_custom_role" {
				fmt.Printf("projects/%s/roles/%s\n", r.Config["project"], r.Config["role_id"])
			} else if r.Type == "google_service_account" {
				fmt.Printf("projects/%s/serviceAccounts/%s@subier-dev.iam.gserviceaccount.com\n", r.Config["project"], r.Config["account_id"])
			}
		}
	}
}