feat: update sql server flex configuration for user and database (#46)

## Description

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At least please give us some description what you are trying to achieve and why your change is needed. -->

relates to #1234

## Checklist

- [ ] Issue was linked above
- [ ] Code format was applied: `make fmt`
- [ ] Examples were added / adjusted (see `examples/` directory)
- [x] Docs are up-to-date: `make generate-docs` (will be checked by CI)
- [ ] Unit tests got implemented or updated
- [ ] Acceptance tests got implemented or updated (see e.g. [here](f5f99d1709/stackit/internal/services/dns/dns_acc_test.go))
- [x] Unit tests are passing: `make test` (will be checked by CI)
- [x] No linter issues: `make lint` (will be checked by CI)

Reviewed-on: #46
Reviewed-by: Marcel_Henselin <marcel.henselin@stackit.cloud>
Co-authored-by: Andre Harms <andre.harms@stackit.cloud>
Co-committed-by: Andre Harms <andre.harms@stackit.cloud>

stackit/internal/services/sqlserverflexbeta/database/datasource.go

@@ -7,6 +7,7 @@ import (
 
 	"github.com/hashicorp/terraform-plugin-framework/datasource"
 	"github.com/hashicorp/terraform-plugin-framework/datasource/schema"
+	"github.com/hashicorp/terraform-plugin-framework/diag"
 	"github.com/hashicorp/terraform-plugin-framework/types"
 	"github.com/hashicorp/terraform-plugin-log/tflog"
 	"github.com/stackitcloud/stackit-sdk-go/core/config"
@@ -28,7 +29,7 @@ func NewDatabaseDataSource() datasource.DataSource {
 
 type dataSourceModel struct {
 	sqlserverflexbetaGen.DatabaseModel
-	TfId types.String `tfsdk:"id"`
+	TerraformId types.String `tfsdk:"id"`
 }
 
 type databaseDataSource struct {
@@ -97,8 +98,6 @@ func (d *databaseDataSource) Configure(
 
 func (d *databaseDataSource) Read(ctx context.Context, req datasource.ReadRequest, resp *datasource.ReadResponse) {
 	var data dataSourceModel
-	readErr := "Read DB error"
-
 	// Read Terraform configuration data into the model
 	resp.Diagnostics.Append(req.Config.Get(ctx, &data)...)
 
@@ -108,6 +107,7 @@ func (d *databaseDataSource) Read(ctx context.Context, req datasource.ReadReques
 
 	ctx = core.InitProviderContext(ctx)
 
+	// Extract identifiers from the plan
 	projectId := data.ProjectId.ValueString()
 	region := d.providerData.GetRegionWithOverride(data.Region)
 	instanceId := data.InstanceId.ValueString()
@@ -120,44 +120,55 @@ func (d *databaseDataSource) Read(ctx context.Context, req datasource.ReadReques
 
 	databaseResp, err := d.client.GetDatabaseRequest(ctx, projectId, region, instanceId, databaseName).Execute()
 	if err != nil {
-		utils.LogError(
-			ctx,
-			&resp.Diagnostics,
-			err,
-			"Reading database",
-			fmt.Sprintf("database with %q does not exist in project %q.", databaseName, projectId),
-			map[int]string{
-				http.StatusForbidden: fmt.Sprintf("Project with %q not found or forbidden access", projectId),
-			},
-		)
+		handleReadError(ctx, &resp.Diagnostics, err, projectId, instanceId)
 		resp.State.RemoveResource(ctx)
 		return
 	}
 
 	ctx = core.LogResponse(ctx)
-
-	dbId, ok := databaseResp.GetIdOk()
-	if !ok {
+	// Map response body to schema and populate Computed attribute values
+	err = mapFields(databaseResp, &data, region)
+	if err != nil {
 		core.LogAndAddError(
 			ctx,
 			&resp.Diagnostics,
-			readErr,
-			"Database creation waiting: returned id is nil",
+			"Error reading database",
+			fmt.Sprintf("Processing API payload: %v", err),
 		)
 		return
 	}
 
-	data.Id = types.Int64Value(dbId)
-	data.TfId = utils.BuildInternalTerraformId(projectId, region, instanceId, databaseName)
-	data.Owner = types.StringValue(databaseResp.GetOwner())
-	data.CollationName = types.StringValue(databaseResp.GetCollationName())
-	data.CompatibilityLevel = types.Int64Value(databaseResp.GetCompatibilityLevel())
-	data.DatabaseName = types.StringValue(databaseResp.GetName())
-	// data.InstanceId = types.StringValue(databaseResp.GetInstanceId())
-	// data.Name = types.Sometype(apiResponse.GetName())
-	// data.ProjectId = types.Sometype(apiResponse.GetProjectId())
-	// data.Region = types.Sometype(apiResponse.GetRegion())
-
 	// Save data into Terraform state
 	resp.Diagnostics.Append(resp.State.Set(ctx, &data)...)
+
+	tflog.Info(ctx, "SQL Server Flex beta database read")
+
+}
+
+// handleReadError centralizes API error handling for the Read operation.
+func handleReadError(ctx context.Context, diags *diag.Diagnostics, err error, projectId, instanceId string) {
+	utils.LogError(
+		ctx,
+		diags,
+		err,
+		"Reading database",
+		fmt.Sprintf(
+			"Could not retrieve database for instance %q in project %q.",
+			instanceId,
+			projectId,
+		),
+		map[int]string{
+			http.StatusBadRequest: fmt.Sprintf(
+				"Invalid request parameters for project %q and instance %q.",
+				projectId,
+				instanceId,
+			),
+			http.StatusNotFound: fmt.Sprintf(
+				"Database, instance %q, or project %q not found.",
+				instanceId,
+				projectId,
+			),
+			http.StatusForbidden: fmt.Sprintf("Forbidden access to project %q.", projectId),
+		},
+	)
 }