package project

import (
	"context"
	"fmt"
	"net/http"
	"regexp"
	"strings"

	"github.com/google/uuid"
	"github.com/hashicorp/terraform-plugin-framework-validators/mapvalidator"
	"github.com/hashicorp/terraform-plugin-framework-validators/resourcevalidator"
	"github.com/hashicorp/terraform-plugin-framework-validators/stringvalidator"
	"github.com/hashicorp/terraform-plugin-framework/attr"
	"github.com/hashicorp/terraform-plugin-framework/diag"
	"github.com/hashicorp/terraform-plugin-framework/schema/validator"
	"github.com/hashicorp/terraform-plugin-framework/tfsdk"
	"github.com/hashicorp/terraform-plugin-framework/types/basetypes"
	"github.com/stackitcloud/terraform-provider-stackit/stackit/internal/conversion"
	"github.com/stackitcloud/terraform-provider-stackit/stackit/internal/core"
	"github.com/stackitcloud/terraform-provider-stackit/stackit/internal/utils"
	"github.com/stackitcloud/terraform-provider-stackit/stackit/internal/validate"

	"github.com/hashicorp/terraform-plugin-framework/path"
	"github.com/hashicorp/terraform-plugin-framework/resource"
	"github.com/hashicorp/terraform-plugin-framework/resource/schema"
	"github.com/hashicorp/terraform-plugin-framework/resource/schema/listplanmodifier"
	"github.com/hashicorp/terraform-plugin-framework/resource/schema/planmodifier"
	"github.com/hashicorp/terraform-plugin-framework/resource/schema/stringplanmodifier"
	"github.com/hashicorp/terraform-plugin-framework/types"
	"github.com/hashicorp/terraform-plugin-log/tflog"
	"github.com/stackitcloud/stackit-sdk-go/core/config"
	"github.com/stackitcloud/stackit-sdk-go/core/oapierror"
	sdkUtils "github.com/stackitcloud/stackit-sdk-go/core/utils"
	"github.com/stackitcloud/stackit-sdk-go/services/authorization"
	"github.com/stackitcloud/stackit-sdk-go/services/resourcemanager"
	"github.com/stackitcloud/stackit-sdk-go/services/resourcemanager/wait"
)

// Ensure the implementation satisfies the expected interfaces.
var (
	_ resource.Resource                = &projectResource{}
	_ resource.ResourceWithConfigure   = &projectResource{}
	_ resource.ResourceWithImportState = &projectResource{}
)

const (
	projectResourceType = "project"
	projectOwnerRole    = "owner"
)

type Model struct {
	Id                types.String `tfsdk:"id"` // needed by TF
	ProjectId         types.String `tfsdk:"project_id"`
	ContainerId       types.String `tfsdk:"container_id"`
	ContainerParentId types.String `tfsdk:"parent_container_id"`
	Name              types.String `tfsdk:"name"`
	Labels            types.Map    `tfsdk:"labels"`
	OwnerEmail        types.String `tfsdk:"owner_email"`
	Members           types.List   `tfsdk:"members"`
}

// Struct corresponding to Model.Members[i]
type member struct {
	Role    types.String `tfsdk:"role"`
	Subject types.String `tfsdk:"subject"`
}

// Types corresponding to member
var memberTypes = map[string]attr.Type{
	"role":    types.StringType,
	"subject": types.StringType,
}

// NewProjectResource is a helper function to simplify the provider implementation.
func NewProjectResource() resource.Resource {
	return &projectResource{}
}

// projectResource is the resource implementation.
type projectResource struct {
	resourceManagerClient *resourcemanager.APIClient
	authorizationClient   *authorization.APIClient
}

// Metadata returns the resource type name.
func (r *projectResource) Metadata(_ context.Context, req resource.MetadataRequest, resp *resource.MetadataResponse) {
	resp.TypeName = req.ProviderTypeName + "_resourcemanager_project"
}

// Configure adds the provider configured client to the resource.
func (r *projectResource) Configure(ctx context.Context, req resource.ConfigureRequest, resp *resource.ConfigureResponse) {
	// Prevent panic if the provider has not been configured.
	if req.ProviderData == nil {
		return
	}

	providerData, ok := req.ProviderData.(core.ProviderData)
	if !ok {
		core.LogAndAddError(ctx, &resp.Diagnostics, "Error configuring API client", fmt.Sprintf("Expected configure type stackit.ProviderData, got %T", req.ProviderData))
		return
	}

	var rmClient *resourcemanager.APIClient
	var err error
	if providerData.ResourceManagerCustomEndpoint != "" {
		ctx = tflog.SetField(ctx, "resourcemanager_custom_endpoint", providerData.ResourceManagerCustomEndpoint)
		rmClient, err = resourcemanager.NewAPIClient(
			config.WithCustomAuth(providerData.RoundTripper),
			config.WithEndpoint(providerData.ResourceManagerCustomEndpoint),
		)
	} else {
		rmClient, err = resourcemanager.NewAPIClient(
			config.WithCustomAuth(providerData.RoundTripper),
		)
	}

	if err != nil {
		core.LogAndAddError(ctx, &resp.Diagnostics, "Error configuring Resource Manager API client", fmt.Sprintf("Configuring client: %v. This is an error related to the provider configuration, not to the resource configuration", err))
		return
	}

	var aClient *authorization.APIClient
	if providerData.AuthorizationCustomEndpoint != "" {
		ctx = tflog.SetField(ctx, "authorization_custom_endpoint", providerData.AuthorizationCustomEndpoint)
		aClient, err = authorization.NewAPIClient(
			config.WithCustomAuth(providerData.RoundTripper),
			config.WithEndpoint(providerData.AuthorizationCustomEndpoint),
		)
	} else {
		aClient, err = authorization.NewAPIClient(
			config.WithCustomAuth(providerData.RoundTripper),
		)
	}

	if err != nil {
		core.LogAndAddError(ctx, &resp.Diagnostics, "Error configuring Membership API client", fmt.Sprintf("Configuring client: %v. This is an error related to the provider configuration, not to the resource configuration", err))
		return
	}

	r.resourceManagerClient = rmClient
	r.authorizationClient = aClient
	tflog.Info(ctx, "Resource Manager project client configured")
}

// Schema defines the schema for the resource.
func (r *projectResource) Schema(_ context.Context, _ resource.SchemaRequest, resp *resource.SchemaResponse) {
	descriptions := map[string]string{
		"main":                        "Resource Manager project resource schema. To use this resource, it is required that you set the service account email in the provider configuration.",
		"id":                          "Terraform's internal resource ID. It is structured as \"`container_id`\".",
		"project_id":                  "Project UUID identifier. This is the ID that can be used in most of the other resources to identify the project.",
		"container_id":                "Project container ID. Globally unique, user-friendly identifier.",
		"parent_container_id":         "Parent resource identifier. Both container ID (user-friendly) and UUID are supported",
		"name":                        "Project name.",
		"labels":                      "Labels are key-value string pairs which can be attached to a resource container. A label key must match the regex [A-ZÄÜÖa-zäüöß0-9_-]{1,64}. A label value must match the regex ^$|[A-ZÄÜÖa-zäüöß0-9_-]{1,64}",
		"owner_email":                 "Email address of the owner of the project. This value is only considered during creation. Changing it afterwards will have no effect.",
		"members":                     "The members assigned to the project. At least one subject needs to be a user, and not a client or service account. This value is only considered during creation. Changing it afterwards will have no effect.",
		"members.role":                fmt.Sprintf("The role of the member in the project. Possible values include, but are not limited to: `owner`, `editor`, `reader`. Legacy roles (%s) are not supported.", strings.Join(utils.QuoteValues(utils.LegacyProjectRoles), ", ")),
		"members.subject":             "Unique identifier of the user, service account or client. This is usually the email address for users or service accounts, and the name in case of clients.",
		"members_deprecation_message": "The \"members\" field has been deprecated in favor of the \"owner_email\" field. Please use the \"owner_email\" field to assign the owner role to a user.",
	}

	resp.Schema = schema.Schema{
		Description: descriptions["main"],
		Attributes: map[string]schema.Attribute{
			"id": schema.StringAttribute{
				Description: descriptions["id"],
				Computed:    true,
				PlanModifiers: []planmodifier.String{
					stringplanmodifier.UseStateForUnknown(),
				},
			},
			"project_id": schema.StringAttribute{
				Description: descriptions["project_id"],
				Computed:    true,
				PlanModifiers: []planmodifier.String{
					stringplanmodifier.UseStateForUnknown(),
				},
				Validators: []validator.String{
					validate.UUID(),
				},
			},
			"container_id": schema.StringAttribute{
				Description: descriptions["container_id"],
				Computed:    true,
				PlanModifiers: []planmodifier.String{
					stringplanmodifier.UseStateForUnknown(),
				},
				Validators: []validator.String{
					validate.NoSeparator(),
				},
			},
			"parent_container_id": schema.StringAttribute{
				Description: descriptions["parent_container_id"],
				Required:    true,
				Validators: []validator.String{
					validate.NoSeparator(),
				},
			},
			"name": schema.StringAttribute{
				Description: descriptions["name"],
				Required:    true,
				Validators: []validator.String{
					stringvalidator.LengthAtLeast(1),
					stringvalidator.LengthAtMost(63),
				},
			},
			"labels": schema.MapAttribute{
				Description: descriptions["labels"],
				ElementType: types.StringType,
				Optional:    true,
				Validators: []validator.Map{
					mapvalidator.KeysAre(
						stringvalidator.RegexMatches(
							regexp.MustCompile(`[A-ZÄÜÖa-zäüöß0-9_-]{1,64}`),
							"must match expression"),
					),
					mapvalidator.ValueStringsAre(
						stringvalidator.RegexMatches(
							regexp.MustCompile(`^$|[A-ZÄÜÖa-zäüöß0-9_-]{1,64}`),
							"must match expression"),
					),
				},
			},
			"owner_email": schema.StringAttribute{
				Description: descriptions["owner_email"],
				Required:    true,
			},
			"members": schema.ListNestedAttribute{
				Description:         descriptions["members"],
				DeprecationMessage:  descriptions["members_deprecation_message"],
				MarkdownDescription: fmt.Sprintf("%s\n\n!> %s", descriptions["members"], descriptions["members_deprecation_message"]),
				Optional:            true,
				PlanModifiers: []planmodifier.List{
					listplanmodifier.RequiresReplace(),
				},
				NestedObject: schema.NestedAttributeObject{
					Attributes: map[string]schema.Attribute{
						"role": schema.StringAttribute{
							Description: descriptions["members.role"],
							Required:    true,
							Validators: []validator.String{
								validate.NonLegacyProjectRole(),
							},
						},
						"subject": schema.StringAttribute{
							Description: descriptions["members.subject"],
							Required:    true,
						},
					},
				},
			},
		},
	}
}

// ConfigValidators validates the resource configuration
func (r *projectResource) ConfigValidators(_ context.Context) []resource.ConfigValidator {
	return []resource.ConfigValidator{
		resourcevalidator.AtLeastOneOf(
			path.MatchRoot("owner_email"),
			path.MatchRoot("members"),
		),
	}
}

// Create creates the resource and sets the initial Terraform state.
func (r *projectResource) Create(ctx context.Context, req resource.CreateRequest, resp *resource.CreateResponse) { // nolint:gocritic // function signature required by Terraform
	var model Model
	diags := req.Plan.Get(ctx, &model)
	resp.Diagnostics.Append(diags...)
	if resp.Diagnostics.HasError() {
		return
	}

	containerId := model.ContainerId.ValueString()
	ctx = tflog.SetField(ctx, "project_container_id", containerId)

	// Generate API request body from model
	payload, err := toCreatePayload(ctx, &model)
	if err != nil {
		core.LogAndAddError(ctx, &resp.Diagnostics, "Error creating project", fmt.Sprintf("Creating API payload: %v", err))
		return
	}
	// Create new project
	createResp, err := r.resourceManagerClient.CreateProject(ctx).CreateProjectPayload(*payload).Execute()
	if err != nil {
		core.LogAndAddError(ctx, &resp.Diagnostics, "Error creating project", fmt.Sprintf("Calling API: %v", err))
		return
	}
	respContainerId := *createResp.ContainerId

	// If the request has not been processed yet and the containerId doesnt exist,
	// the waiter will fail with authentication error, so wait some time before checking the creation
	waitResp, err := wait.CreateProjectWaitHandler(ctx, r.resourceManagerClient, respContainerId).WaitWithContext(ctx)
	if err != nil {
		core.LogAndAddError(ctx, &resp.Diagnostics, "Error creating project", fmt.Sprintf("Instance creation waiting: %v", err))
		return
	}

	err = mapProjectFields(ctx, waitResp, &model, &resp.State)
	if err != nil {
		core.LogAndAddError(ctx, &resp.Diagnostics, "Error creating project", fmt.Sprintf("Processing API response: %v", err))
		return
	}

	membersResp, err := r.authorizationClient.ListMembersExecute(ctx, projectResourceType, *waitResp.ProjectId)
	if err != nil {
		core.LogAndAddError(ctx, &resp.Diagnostics, "Error creating project", fmt.Sprintf("Reading members: %v", err))
		return
	}

	err = mapMembersFields(ctx, membersResp.Members, &model)
	if err != nil {
		core.LogAndAddError(ctx, &resp.Diagnostics, "Error creating project", fmt.Sprintf("Processing API payload: %v", err))
		return
	}
	// Set state to fully populated data
	diags = resp.State.Set(ctx, model)
	resp.Diagnostics.Append(diags...)
	if resp.Diagnostics.HasError() {
		return
	}
	tflog.Info(ctx, "Resource Manager project created")
}

// Read refreshes the Terraform state with the latest data.
func (r *projectResource) Read(ctx context.Context, req resource.ReadRequest, resp *resource.ReadResponse) { // nolint:gocritic // function signature required by Terraform
	var model Model
	diags := req.State.Get(ctx, &model)
	resp.Diagnostics.Append(diags...)
	if resp.Diagnostics.HasError() {
		return
	}
	containerId := model.ContainerId.ValueString()
	ctx = tflog.SetField(ctx, "container_id", containerId)

	projectResp, err := r.resourceManagerClient.GetProject(ctx, containerId).Execute()
	if err != nil {
		oapiErr, ok := err.(*oapierror.GenericOpenAPIError) //nolint:errorlint //complaining that error.As should be used to catch wrapped errors, but this error should not be wrapped
		if ok && oapiErr.StatusCode == http.StatusForbidden {
			resp.State.RemoveResource(ctx)
			return
		}
		core.LogAndAddError(ctx, &resp.Diagnostics, "Error reading project", fmt.Sprintf("Calling API: %v", err))
		return
	}

	err = mapProjectFields(ctx, projectResp, &model, &resp.State)
	if err != nil {
		core.LogAndAddError(ctx, &resp.Diagnostics, "Error reading project", fmt.Sprintf("Processing API response: %v", err))
		return
	}

	// Set refreshed model
	diags = resp.State.Set(ctx, model)
	resp.Diagnostics.Append(diags...)
	if resp.Diagnostics.HasError() {
		return
	}
	tflog.Info(ctx, "Resource Manager project read")
}

// Update updates the resource and sets the updated Terraform state on success.
func (r *projectResource) Update(ctx context.Context, req resource.UpdateRequest, resp *resource.UpdateResponse) { // nolint:gocritic // function signature required by Terraform
	// Retrieve values from plan
	var model Model
	diags := req.Plan.Get(ctx, &model)
	resp.Diagnostics.Append(diags...)
	if resp.Diagnostics.HasError() {
		return
	}
	containerId := model.ContainerId.ValueString()
	ctx = tflog.SetField(ctx, "container_id", containerId)

	// Generate API request body from model
	payload, err := toUpdatePayload(&model)
	if err != nil {
		core.LogAndAddError(ctx, &resp.Diagnostics, "Error updating project", fmt.Sprintf("Creating API payload: %v", err))
		return
	}
	// Update existing project
	_, err = r.resourceManagerClient.PartialUpdateProject(ctx, containerId).PartialUpdateProjectPayload(*payload).Execute()
	if err != nil {
		core.LogAndAddError(ctx, &resp.Diagnostics, "Error updating project", fmt.Sprintf("Calling API: %v", err))
		return
	}

	// Fetch updated project
	projectResp, err := r.resourceManagerClient.GetProject(ctx, containerId).Execute()
	if err != nil {
		core.LogAndAddError(ctx, &resp.Diagnostics, "Error updating project", fmt.Sprintf("Calling API for updated data: %v", err))
		return
	}

	err = mapProjectFields(ctx, projectResp, &model, &resp.State)
	if err != nil {
		core.LogAndAddError(ctx, &resp.Diagnostics, "Error updating project", fmt.Sprintf("Processing API response: %v", err))
		return
	}

	diags = resp.State.Set(ctx, model)
	resp.Diagnostics.Append(diags...)
	if resp.Diagnostics.HasError() {
		return
	}
	tflog.Info(ctx, "Resource Manager project updated")
}

// Delete deletes the resource and removes the Terraform state on success.
func (r *projectResource) Delete(ctx context.Context, req resource.DeleteRequest, resp *resource.DeleteResponse) { // nolint:gocritic // function signature required by Terraform
	// Retrieve values from state
	var model Model
	diags := req.State.Get(ctx, &model)
	resp.Diagnostics.Append(diags...)
	if resp.Diagnostics.HasError() {
		return
	}

	containerId := model.ContainerId.ValueString()
	ctx = tflog.SetField(ctx, "container_id", containerId)

	// Delete existing project
	err := r.resourceManagerClient.DeleteProject(ctx, containerId).Execute()
	if err != nil {
		core.LogAndAddError(ctx, &resp.Diagnostics, "Error deleting project", fmt.Sprintf("Calling API: %v", err))
		return
	}

	_, err = wait.DeleteProjectWaitHandler(ctx, r.resourceManagerClient, containerId).WaitWithContext(ctx)
	if err != nil {
		core.LogAndAddError(ctx, &resp.Diagnostics, "Error deleting project", fmt.Sprintf("Instance deletion waiting: %v", err))
		return
	}

	tflog.Info(ctx, "Resource Manager project deleted")
}

// ImportState imports a resource into the Terraform state on success.
// The expected format of the resource import identifier is: container_id
func (r *projectResource) ImportState(ctx context.Context, req resource.ImportStateRequest, resp *resource.ImportStateResponse) {
	idParts := strings.Split(req.ID, core.Separator)
	if len(idParts) != 1 || idParts[0] == "" {
		core.LogAndAddError(ctx, &resp.Diagnostics,
			"Error importing project",
			fmt.Sprintf("Expected import identifier with format: [container_id]  Got: %q", req.ID),
		)
		return
	}

	ctx = tflog.SetField(ctx, "container_id", req.ID)

	resp.Diagnostics.Append(resp.State.SetAttribute(ctx, path.Root("container_id"), req.ID)...)
	tflog.Info(ctx, "Resource Manager Project state imported")
}

// mapProjectFields maps the API response to the Terraform model and update the Terraform state
func mapProjectFields(ctx context.Context, projectResp *resourcemanager.GetProjectResponse, model *Model, state *tfsdk.State) (err error) {
	if projectResp == nil {
		return fmt.Errorf("response input is nil")
	}
	if model == nil {
		return fmt.Errorf("model input is nil")
	}

	var projectId string
	if model.ProjectId.ValueString() != "" {
		projectId = model.ProjectId.ValueString()
	} else if projectResp.ProjectId != nil {
		projectId = *projectResp.ProjectId
	} else {
		return fmt.Errorf("project id not present")
	}

	var containerId string
	if model.ContainerId.ValueString() != "" {
		containerId = model.ContainerId.ValueString()
	} else if projectResp.ContainerId != nil {
		containerId = *projectResp.ContainerId
	} else {
		return fmt.Errorf("container id not present")
	}

	var labels basetypes.MapValue
	if projectResp.Labels != nil && len(*projectResp.Labels) != 0 {
		labels, err = conversion.ToTerraformStringMap(ctx, *projectResp.Labels)
		if err != nil {
			return fmt.Errorf("converting to StringValue map: %w", err)
		}
	} else {
		labels = types.MapNull(types.StringType)
	}

	var containerParentIdTF basetypes.StringValue
	if projectResp.Parent != nil {
		if _, err := uuid.Parse(model.ContainerParentId.ValueString()); err == nil {
			// the provided containerParentId is the UUID identifier
			containerParentIdTF = types.StringPointerValue(projectResp.Parent.Id)
		} else {
			// the provided containerParentId is the user-friendly container id
			containerParentIdTF = types.StringPointerValue(projectResp.Parent.ContainerId)
		}
	} else {
		containerParentIdTF = types.StringNull()
	}

	model.Id = types.StringValue(containerId)
	model.ProjectId = types.StringValue(projectId)
	model.ContainerParentId = containerParentIdTF
	model.ContainerId = types.StringValue(containerId)
	model.Name = types.StringPointerValue(projectResp.Name)
	model.Labels = labels

	if state != nil {
		diags := diag.Diagnostics{}
		diags.Append(state.SetAttribute(ctx, path.Root("id"), model.Id)...)
		diags.Append(state.SetAttribute(ctx, path.Root("project_id"), model.ProjectId)...)
		diags.Append(state.SetAttribute(ctx, path.Root("parent_container_id"), model.ContainerParentId)...)
		diags.Append(state.SetAttribute(ctx, path.Root("container_id"), model.ContainerId)...)
		diags.Append(state.SetAttribute(ctx, path.Root("name"), model.Name)...)
		diags.Append(state.SetAttribute(ctx, path.Root("labels"), model.Labels)...)
		if diags.HasError() {
			return fmt.Errorf("update terraform state: %w", core.DiagsToError(diags))
		}
	}

	return nil
}

func mapMembersFields(ctx context.Context, members *[]authorization.Member, model *Model) error {
	if members == nil {
		model.Members = types.ListNull(types.ObjectType{AttrTypes: memberTypes})
		return nil
	}

	if (model.Members.IsNull() || model.Members.IsUnknown()) && !model.OwnerEmail.IsNull() {
		// If the new "members" field is not set and the deprecated "owner_email" field is set,
		// we keep the old behavior and do map the members to avoid an inconsistent result after apply error
		model.Members = types.ListNull(types.ObjectType{AttrTypes: memberTypes})
		return nil
	}

	modelMembers := []member{}
	if !(model.Members.IsNull() || model.Members.IsUnknown()) {
		diags := model.Members.ElementsAs(ctx, &modelMembers, false)
		if diags.HasError() {
			return fmt.Errorf("processing members: %w", core.DiagsToError(diags))
		}
	}
	modelMemberIds := make([]string, len(modelMembers))
	for i, m := range modelMembers {
		modelMemberIds[i] = memberId(authorization.Member{
			Role:    m.Role.ValueStringPointer(),
			Subject: m.Subject.ValueStringPointer(),
		})
	}

	apiMemberIds := []string{}
	for _, m := range *members {
		if utils.IsLegacyProjectRole(*m.Role) {
			continue
		}
		apiMemberIds = append(apiMemberIds, memberId(m))
	}

	reconciledMembersIds := utils.ReconcileStringSlices(modelMemberIds, apiMemberIds)

	membersList := []attr.Value{}
	for i, m := range reconciledMembersIds {
		role := roleFromId(m)
		subject := subjectFromId(m)
		if role == "" || subject == "" {
			return fmt.Errorf("reconcile list of members")
		}

		membersMap := map[string]attr.Value{
			"subject": types.StringValue(subject),
			"role":    types.StringValue(role),
		}

		memberTF, diags := types.ObjectValue(memberTypes, membersMap)
		if diags.HasError() {
			return fmt.Errorf("mapping index %d: %w", i, core.DiagsToError(diags))
		}

		membersList = append(membersList, memberTF)
	}

	membersTF, diags := types.ListValue(
		types.ObjectType{AttrTypes: memberTypes},
		membersList,
	)
	if diags.HasError() {
		return core.DiagsToError(diags)
	}

	model.Members = membersTF
	return nil
}

func toMembersPayload(ctx context.Context, model *Model) (*[]authorization.Member, error) {
	if model == nil {
		return nil, fmt.Errorf("nil model")
	}
	if model.Members.IsNull() || model.Members.IsUnknown() {
		if model.OwnerEmail.IsNull() {
			return nil, fmt.Errorf("members and owner_email are both null or unknown")
		}

		return &[]authorization.Member{
			{
				Subject: model.OwnerEmail.ValueStringPointer(),
				Role:    sdkUtils.Ptr(projectOwnerRole),
			},
		}, nil
	}

	membersModel := []member{}
	diags := model.Members.ElementsAs(ctx, &membersModel, false)
	if diags.HasError() {
		return nil, core.DiagsToError(diags)
	}

	// If the new "members" fields is set, it has precedence over the "owner_email" field
	members := []authorization.Member{}
	for _, m := range membersModel {
		members = append(members, authorization.Member{
			Role:    m.Role.ValueStringPointer(),
			Subject: m.Subject.ValueStringPointer(),
		})
	}

	return &members, nil
}

func toCreatePayload(ctx context.Context, model *Model) (*resourcemanager.CreateProjectPayload, error) {
	if model == nil {
		return nil, fmt.Errorf("nil model")
	}

	members, err := toMembersPayload(ctx, model)
	if err != nil {
		return nil, fmt.Errorf("processing members: %w", err)
	}
	var convertedMembers []resourcemanager.Member
	for _, m := range *members {
		convertedMembers = append(convertedMembers,
			resourcemanager.Member{
				Subject: m.Subject,
				Role:    m.Role,
			})
	}
	var membersPayload *[]resourcemanager.Member
	if len(convertedMembers) > 0 {
		membersPayload = &convertedMembers
	}

	modelLabels := model.Labels.Elements()
	labels, err := conversion.ToOptStringMap(modelLabels)
	if err != nil {
		return nil, fmt.Errorf("converting to Go map: %w", err)
	}

	return &resourcemanager.CreateProjectPayload{
		ContainerParentId: conversion.StringValueToPointer(model.ContainerParentId),
		Labels:            labels,
		Members:           membersPayload,
		Name:              conversion.StringValueToPointer(model.Name),
	}, nil
}

func toUpdatePayload(model *Model) (*resourcemanager.PartialUpdateProjectPayload, error) {
	if model == nil {
		return nil, fmt.Errorf("nil model")
	}

	modelLabels := model.Labels.Elements()
	labels, err := conversion.ToOptStringMap(modelLabels)
	if err != nil {
		return nil, fmt.Errorf("converting to GO map: %w", err)
	}

	return &resourcemanager.PartialUpdateProjectPayload{
		ContainerParentId: conversion.StringValueToPointer(model.ContainerParentId),
		Name:              conversion.StringValueToPointer(model.Name),
		Labels:            labels,
	}, nil
}

// Internal representation of a member, which is uniquely identified by the subject and role
func memberId(member authorization.Member) string {
	return fmt.Sprintf("%s,%s", *member.Subject, *member.Role)
}

// Extract the role from the member ID representation
func roleFromId(id string) string {
	parts := strings.Split(id, ",")
	if len(parts) != 2 {
		return ""
	}
	return parts[1]
}

// Extract the subject from the member ID representation
func subjectFromId(id string) string {
	parts := strings.Split(id, ",")
	if len(parts) != 2 {
		return ""
	}
	return parts[0]
}