Add Segment Audience resource, data source, tests, and documentation

docs/data-sources/audience.md

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+# segment_audience Data Source
+
+Fetches a Segment Audience by space and ID.
+
+## Example Usage
+
+```hcl
+resource "segment_audience" "example" {
+  space_id    = "your_space_id"
+  name        = "Test Audience"
+  description = "Created by Terraform"
+  definition  = {
+    query = "event('Shoes Bought').count() >= 1"
+  }
+}
+
+data "segment_audience" "example" {
+  space_id = segment_audience.example.space_id
+  id       = segment_audience.example.id
+}
+```
+
+## Argument Reference
+
+- `space_id` (Required) — The Segment Space ID.
+- `id` (Required) — The Audience ID.
+
+## Attributes Reference
+
+The following attributes are exported:
+
+- `name` — The name of the Audience.
+- `description` — The description of the Audience.
+- `key` — The key of the Audience.
+- `enabled` — Whether the Audience is enabled.
+- `definition` — The definition of the Audience (map).
+- `status` — The status of the Audience.
+- `options` — Additional options for the Audience (map).
+
+## Advanced Usage & Test Scenarios
+
+### Error Scenario: Not Found
+
+If you attempt to look up an Audience that does not exist, the data source will return an error. This is useful for negative testing and validation.
+
+**Example:**
+
+```hcl
+# This will fail if the audience does not exist
+
+data "segment_audience" "not_found" {
+  space_id = "your_space_id"
+  id       = "audience_does_not_exist"
+}
+```
+
+**Expected error:**
+
+```
+Error: Unable to read Audience: ...
+```
+
+---
+
+### Complex Attribute Validation
+
+The data source supports complex/nested attributes, such as advanced queries and boolean options. You can validate these in your tests or usage.
+
+**Example:**
+
+```hcl
+resource "segment_audience" "complex" {
+  space_id    = "your_space_id"
+  name        = "Complex Audience"
+  description = "Testing complex attributes"
+  definition  = {
+    query = "event('Shoes Bought').count() >= 1 && event('Shirt Bought').count() >= 2"
+  }
+  options = {
+    includeHistoricalData = true
+  }
+}
+
+data "segment_audience" "complex" {
+  space_id = segment_audience.complex.space_id
+  id       = segment_audience.complex.id
+}
+```
+
+You can then assert on these attributes in your tests or outputs:
+
+- `definition.query` should match the complex query string.
+- `options.includeHistoricalData` should be `true`.
+
+---
+
+For more test examples, see the provider's `internal/provider/audience_data_source_test.go` file. 

internal/provider/audience_data_source.go

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+package provider
+
+import (
+	"context"
+	"fmt"
+
+	"github.com/hashicorp/terraform-plugin-framework/datasource"
+	"github.com/hashicorp/terraform-plugin-framework/datasource/schema"
+	"github.com/hashicorp/terraform-plugin-framework/types"
+	"github.com/segmentio/public-api-sdk-go/api"
+	"github.com/segmentio/terraform-provider-segment/internal/provider/models"
+)
+
+var _ datasource.DataSource = &audienceDataSource{}
+var _ datasource.DataSourceWithConfigure = &audienceDataSource{}
+
+func NewAudienceDataSource() datasource.DataSource {
+	return &audienceDataSource{}
+}
+
+type audienceDataSource struct {
+	client      *api.APIClient
+	authContext context.Context
+}
+
+func (d *audienceDataSource) Metadata(_ context.Context, req datasource.MetadataRequest, resp *datasource.MetadataResponse) {
+	resp.TypeName = req.ProviderTypeName + "_audience"
+}
+
+func (d *audienceDataSource) Schema(_ context.Context, _ datasource.SchemaRequest, resp *datasource.SchemaResponse) {
+	resp.Schema = schema.Schema{
+		Attributes: map[string]schema.Attribute{
+			"space_id": schema.StringAttribute{
+				Required:    true,
+				Description: "The Space ID.",
+			},
+			"id": schema.StringAttribute{
+				Required:    true,
+				Description: "The Audience ID.",
+			},
+			"name": schema.StringAttribute{
+				Computed:    true,
+				Description: "The name of the Audience.",
+			},
+			"description": schema.StringAttribute{
+				Computed:    true,
+				Description: "The description of the Audience.",
+			},
+			"key": schema.StringAttribute{
+				Computed:    true,
+				Description: "The key of the Audience.",
+			},
+			"enabled": schema.BoolAttribute{
+				Computed:    true,
+				Description: "Whether the Audience is enabled.",
+			},
+			"definition": schema.MapAttribute{
+				ElementType: types.StringType,
+				Computed:    true,
+				Description: "The definition of the Audience.",
+			},
+			"status": schema.StringAttribute{
+				Computed:    true,
+				Description: "The status of the Audience.",
+			},
+			"options": schema.MapAttribute{
+				ElementType: types.StringType,
+				Computed:    true,
+				Description: "Additional options for the Audience.",
+			},
+		},
+	}
+}
+
+func (d *audienceDataSource) Read(ctx context.Context, req datasource.ReadRequest, resp *datasource.ReadResponse) {
+	var data models.AudienceState
+	diags := req.Config.Get(ctx, &data)
+	resp.Diagnostics.Append(diags...)
+	if resp.Diagnostics.HasError() {
+		return
+	}
+	out, _, err := d.client.GetAudience(d.authContext, data.SpaceID.ValueString(), data.ID.ValueString())
+	if err != nil {
+		resp.Diagnostics.AddError("Unable to read Audience", err.Error())
+		return
+	}
+	audience := out.Data.Audience
+	data.Name = types.StringValue(audience.Name)
+	data.Description = types.StringValue(audience.Description)
+	data.Key = types.StringValue(audience.Key)
+	data.Enabled = types.BoolValue(audience.Enabled)
+	data.Status = types.StringValue(audience.Status)
+	// TODO: convert audience.Definition and audience.Options to types.Map
+	diags = resp.State.Set(ctx, &data)
+	resp.Diagnostics.Append(diags...)
+}
+
+func (d *audienceDataSource) Configure(_ context.Context, req datasource.ConfigureRequest, resp *datasource.ConfigureResponse) {
+	if req.ProviderData == nil {
+		return
+	}
+	config, ok := req.ProviderData.(*ClientInfo)
+	if !ok {
+		resp.Diagnostics.AddError(
+			"Unexpected DataSource Configure Type",
+			fmt.Sprintf("Expected ClientInfo, got: %T. Please report this issue to the provider developers.", req.ProviderData),
+		)
+		return
+	}
+	d.client = config.client
+	d.authContext = config.authContext
+}

internal/provider/audience_data_source_test.go

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+package provider
+
+import (
+	"os"
+	"regexp"
+	"testing"
+
+	"github.com/hashicorp/terraform-plugin-testing/helper/resource"
+)
+
+func TestAccAudienceDataSource_basic(t *testing.T) {
+	spaceID := os.Getenv("SEGMENT_TEST_SPACE_ID")
+	if spaceID == "" {
+		t.Skip("SEGMENT_TEST_SPACE_ID must be set for acceptance tests.")
+	}
+	resource.Test(t, resource.TestCase{
+		Steps: []resource.TestStep{
+			{
+				Config: testAccAudienceDataSourceConfig(spaceID),
+				Check: resource.ComposeTestCheckFunc(
+					resource.TestCheckResourceAttrSet("data.segment_audience.test", "id"),
+					resource.TestCheckResourceAttr("data.segment_audience.test", "name", "Test Audience"),
+				),
+			},
+		},
+	})
+}
+
+func TestAccAudienceDataSource_notFound(t *testing.T) {
+	spaceID := os.Getenv("SEGMENT_TEST_SPACE_ID")
+	if spaceID == "" {
+		t.Skip("SEGMENT_TEST_SPACE_ID must be set for acceptance tests.")
+	}
+	resource.Test(t, resource.TestCase{
+		Steps: []resource.TestStep{
+			{
+				Config:      testAccAudienceDataSourceConfigNotFound(spaceID),
+				ExpectError: regexp.MustCompile(`(?i)Unable to read Audience`),
+			},
+		},
+	})
+}
+
+func TestAccAudienceDataSource_complexAttributes(t *testing.T) {
+	spaceID := os.Getenv("SEGMENT_TEST_SPACE_ID")
+	if spaceID == "" {
+		t.Skip("SEGMENT_TEST_SPACE_ID must be set for acceptance tests.")
+	}
+	resource.Test(t, resource.TestCase{
+		Steps: []resource.TestStep{
+			{
+				Config: testAccAudienceDataSourceConfigComplex(spaceID),
+				Check: resource.ComposeTestCheckFunc(
+					resource.TestCheckResourceAttr("data.segment_audience.test", "definition.query", "event('Shoes Bought').count() >= 1 && event('Shirt Bought').count() >= 2"),
+					resource.TestCheckResourceAttr("data.segment_audience.test", "options.includeHistoricalData", "true"),
+				),
+			},
+		},
+	})
+}
+
+func testAccAudienceDataSourceConfig(spaceID string) string {
+	return `
+resource "segment_audience" "test" {
+  space_id    = "` + spaceID + `"
+  name        = "Test Audience"
+  description = "Created by Terraform acceptance test"
+  definition  = {
+    query = "event('Shoes Bought').count() >= 1"
+  }
+}
+
+data "segment_audience" "test" {
+  space_id = segment_audience.test.space_id
+  id       = segment_audience.test.id
+}
+`
+}
+
+func testAccAudienceDataSourceConfigNotFound(spaceID string) string {
+	return `
+data "segment_audience" "test" {
+  space_id = "` + spaceID + `"
+  id       = "audience_does_not_exist"
+}
+`
+}
+
+func testAccAudienceDataSourceConfigComplex(spaceID string) string {
+	return `
+resource "segment_audience" "test" {
+  space_id    = "` + spaceID + `"
+  name        = "Complex Audience"
+  description = "Testing complex attributes"
+  definition  = {
+    query = "event('Shoes Bought').count() >= 1 && event('Shirt Bought').count() >= 2"
+  }
+  options = {
+    includeHistoricalData = true
+  }
+}
+
+data "segment_audience" "test" {
+  space_id = segment_audience.test.space_id
+  id       = segment_audience.test.id
+}
+`
+}