package codecommit

import (
	"fmt"
	"log"

	"github.com/aws/aws-sdk-go/aws"
	"github.com/aws/aws-sdk-go/service/codecommit"
	"github.com/hashicorp/aws-sdk-go-base/v2/awsv1shim/v2/tfawserr"
	"github.com/hashicorp/terraform-plugin-sdk/v2/helper/schema"
	"github.com/hashicorp/terraform-plugin-sdk/v2/helper/validation"
	"github.com/hashicorp/terraform-provider-aws/internal/conns"
	tftags "github.com/hashicorp/terraform-provider-aws/internal/tags"
	"github.com/hashicorp/terraform-provider-aws/internal/verify"
	"github.com/hashicorp/terraform-provider-aws/names"
)

func ResourceRepository() *schema.Resource {
	return &schema.Resource{
		Create: resourceRepositoryCreate,
		Update: resourceRepositoryUpdate,
		Read:   resourceRepositoryRead,
		Delete: resourceRepositoryDelete,
		Importer: &schema.ResourceImporter{
			State: schema.ImportStatePassthrough,
		},

		Schema: map[string]*schema.Schema{
			"repository_name": {
				Type:         schema.TypeString,
				Required:     true,
				ForceNew:     true,
				ValidateFunc: validation.StringLenBetween(0, 100),
			},

			"description": {
				Type:         schema.TypeString,
				Optional:     true,
				ValidateFunc: validation.StringLenBetween(0, 1000),
			},

			"arn": {
				Type:     schema.TypeString,
				Computed: true,
			},

			"repository_id": {
				Type:     schema.TypeString,
				Computed: true,
			},

			"clone_url_http": {
				Type:     schema.TypeString,
				Computed: true,
			},

			"clone_url_ssh": {
				Type:     schema.TypeString,
				Computed: true,
			},

			"default_branch": {
				Type:     schema.TypeString,
				Optional: true,
			},
			"tags":     tftags.TagsSchema(),
			"tags_all": tftags.TagsSchemaComputed(),
		},

		CustomizeDiff: verify.SetTagsDiff,
	}
}

func resourceRepositoryCreate(d *schema.ResourceData, meta interface{}) error {
	conn := meta.(*conns.AWSClient).CodeCommitConn
	defaultTagsConfig := meta.(*conns.AWSClient).DefaultTagsConfig
	tags := defaultTagsConfig.MergeTags(tftags.New(d.Get("tags").(map[string]interface{})))

	input := &codecommit.CreateRepositoryInput{
		RepositoryName:        aws.String(d.Get("repository_name").(string)),
		RepositoryDescription: aws.String(d.Get("description").(string)),
		Tags:                  Tags(tags.IgnoreAWS()),
	}

	out, err := conn.CreateRepository(input)
	if err != nil {
		return fmt.Errorf("Error creating CodeCommit Repository: %s", err)
	}

	d.SetId(d.Get("repository_name").(string))
	d.Set("repository_id", out.RepositoryMetadata.RepositoryId)
	d.Set("arn", out.RepositoryMetadata.Arn)
	d.Set("clone_url_http", out.RepositoryMetadata.CloneUrlHttp)
	d.Set("clone_url_ssh", out.RepositoryMetadata.CloneUrlSsh)

	if _, ok := d.GetOk("default_branch"); ok {
		if err := resourceUpdateDefaultBranch(conn, d); err != nil {
			return fmt.Errorf("error updating CodeCommit Repository (%s) default branch: %s", d.Id(), err)
		}
	}

	return resourceRepositoryRead(d, meta)
}

func resourceRepositoryUpdate(d *schema.ResourceData, meta interface{}) error {
	conn := meta.(*conns.AWSClient).CodeCommitConn

	if d.HasChange("default_branch") {
		if err := resourceUpdateDefaultBranch(conn, d); err != nil {
			return fmt.Errorf("error updating CodeCommit Repository (%s) default branch: %s", d.Id(), err)
		}
	}

	if d.HasChange("description") {
		if err := resourceUpdateDescription(conn, d); err != nil {
			return fmt.Errorf("error updating CodeCommit Repository (%s) description: %s", d.Id(), err)
		}
	}

	if d.HasChange("tags_all") {
		o, n := d.GetChange("tags_all")

		if err := UpdateTags(conn, d.Get("arn").(string), o, n); err != nil {
			return fmt.Errorf("error updating CodeCommit Repository (%s) tags: %s", d.Get("arn").(string), err)
		}
	}

	return resourceRepositoryRead(d, meta)
}

func resourceRepositoryRead(d *schema.ResourceData, meta interface{}) error {
	conn := meta.(*conns.AWSClient).CodeCommitConn
	defaultTagsConfig := meta.(*conns.AWSClient).DefaultTagsConfig
	ignoreTagsConfig := meta.(*conns.AWSClient).IgnoreTagsConfig

	input := &codecommit.GetRepositoryInput{
		RepositoryName: aws.String(d.Id()),
	}

	out, err := conn.GetRepository(input)
	if !d.IsNewResource() && tfawserr.ErrCodeEquals(err, codecommit.ErrCodeRepositoryDoesNotExistException) {
		names.LogNotFoundRemoveState(names.CodeCommit, names.ErrActionReading, ResRepository, d.Id())
		d.SetId("")
		return nil
	}

	if err != nil {
		return names.Error(names.CodeCommit, names.ErrActionReading, ResRepository, d.Id(), err)
	}

	d.Set("repository_id", out.RepositoryMetadata.RepositoryId)
	d.Set("arn", out.RepositoryMetadata.Arn)
	d.Set("clone_url_http", out.RepositoryMetadata.CloneUrlHttp)
	d.Set("clone_url_ssh", out.RepositoryMetadata.CloneUrlSsh)
	d.Set("description", out.RepositoryMetadata.RepositoryDescription)
	d.Set("repository_name", out.RepositoryMetadata.RepositoryName)

	if _, ok := d.GetOk("default_branch"); ok {
		if out.RepositoryMetadata.DefaultBranch != nil {
			d.Set("default_branch", out.RepositoryMetadata.DefaultBranch)
		}
	}

	tags, err := ListTags(conn, d.Get("arn").(string))

	if err != nil {
		return fmt.Errorf("error listing tags for CodeCommit Repository (%s): %s", d.Get("arn").(string), err)
	}

	tags = tags.IgnoreAWS().IgnoreConfig(ignoreTagsConfig)

	//lintignore:AWSR002
	if err := d.Set("tags", tags.RemoveDefaultConfig(defaultTagsConfig).Map()); err != nil {
		return fmt.Errorf("error setting tags: %w", err)
	}

	if err := d.Set("tags_all", tags.Map()); err != nil {
		return fmt.Errorf("error setting tags_all: %w", err)
	}

	return nil
}

func resourceRepositoryDelete(d *schema.ResourceData, meta interface{}) error {
	conn := meta.(*conns.AWSClient).CodeCommitConn

	log.Printf("[DEBUG] CodeCommit Delete Repository: %s", d.Id())
	_, err := conn.DeleteRepository(&codecommit.DeleteRepositoryInput{
		RepositoryName: aws.String(d.Id()),
	})
	if err != nil {
		return fmt.Errorf("Error deleting CodeCommit Repository: %s", err.Error())
	}

	return nil
}

func resourceUpdateDescription(conn *codecommit.CodeCommit, d *schema.ResourceData) error {
	branchInput := &codecommit.UpdateRepositoryDescriptionInput{
		RepositoryName:        aws.String(d.Id()),
		RepositoryDescription: aws.String(d.Get("description").(string)),
	}

	_, err := conn.UpdateRepositoryDescription(branchInput)
	if err != nil {
		return fmt.Errorf("Error Updating Repository Description for CodeCommit Repository: %s", err.Error())
	}

	return nil
}

func resourceUpdateDefaultBranch(conn *codecommit.CodeCommit, d *schema.ResourceData) error {
	input := &codecommit.ListBranchesInput{
		RepositoryName: aws.String(d.Id()),
	}

	out, err := conn.ListBranches(input)
	if err != nil {
		return fmt.Errorf("Error reading CodeCommit Repository branches: %s", err.Error())
	}

	if len(out.Branches) == 0 {
		log.Printf("[WARN] Not setting Default Branch CodeCommit Repository that has no branches: %s", d.Id())
		return nil
	}

	branchInput := &codecommit.UpdateDefaultBranchInput{
		RepositoryName:    aws.String(d.Id()),
		DefaultBranchName: aws.String(d.Get("default_branch").(string)),
	}

	_, err = conn.UpdateDefaultBranch(branchInput)
	if err != nil {
		return fmt.Errorf("Error Updating Default Branch for CodeCommit Repository: %s", err.Error())
	}

	return nil
}
