sless/terraform/provider/internal/resources/trigger_resource.go

// 2026-03-07
// trigger_resource.go — Terraform ресурс sless_trigger.
// Поддерживает type=http (создаёт Service+Ingress) и type=cron (запускает по schedule).
// Все ключевые поля имеют RequiresReplace — API не поддерживает обновление триггеров.
// URL функции (для http-триггера) — computed, пишется оператором в status.url.
package resources

import (
	"context"
	"fmt"

	"terraform-provider-sless/internal/client"

	"github.com/hashicorp/terraform-plugin-framework/resource"
	"github.com/hashicorp/terraform-plugin-framework/resource/schema"
	"github.com/hashicorp/terraform-plugin-framework/resource/schema/boolplanmodifier"
	"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"
)

var _ resource.Resource = &TriggerResource{}

type TriggerResource struct {
	client *client.Client
}

func NewTriggerResource() resource.Resource {
	return &TriggerResource{}
}

// TriggerModel — модель состояния terraform для sless_trigger.
type TriggerModel struct {
	Namespace   types.String `tfsdk:"namespace"`
	Name        types.String `tfsdk:"name"`
	Type        types.String `tfsdk:"type"`
	FunctionRef types.String `tfsdk:"function"`
	Schedule    types.String `tfsdk:"schedule"`
	Active      types.Bool   `tfsdk:"active"`
	URL         types.String `tfsdk:"url"`
}

func (r *TriggerResource) Metadata(_ context.Context, req resource.MetadataRequest, resp *resource.MetadataResponse) {
	resp.TypeName = req.ProviderTypeName + "_trigger"
}

func (r *TriggerResource) Schema(_ context.Context, _ resource.SchemaRequest, resp *resource.SchemaResponse) {
	resp.Schema = schema.Schema{
		Attributes: map[string]schema.Attribute{
			"namespace": schema.StringAttribute{
				Required: true,
				PlanModifiers: []planmodifier.String{
					stringplanmodifier.RequiresReplace(),
				},
			},
			"name": schema.StringAttribute{
				Required: true,
				PlanModifiers: []planmodifier.String{
					stringplanmodifier.RequiresReplace(),
				},
			},
			// type: "http" или "cron"
			"type": schema.StringAttribute{
				Required: true,
				PlanModifiers: []planmodifier.String{
					stringplanmodifier.RequiresReplace(),
				},
			},
			// function: имя Function CRD в том же namespace
			"function": schema.StringAttribute{
				Required: true,
				PlanModifiers: []planmodifier.String{
					stringplanmodifier.RequiresReplace(),
				},
			},
			// schedule: только для type=cron, формат cron ("*/5 * * * *")
			"schedule": schema.StringAttribute{
				Optional: true,
				PlanModifiers: []planmodifier.String{
					stringplanmodifier.RequiresReplace(),
				},
			},
			// active, url — только для чтения, вычисляются оператором
			"active": schema.BoolAttribute{
				Computed: true,
				PlanModifiers: []planmodifier.Bool{
					boolplanmodifier.UseStateForUnknown(),
				},
			},
			"url": schema.StringAttribute{
				Computed: true,
				PlanModifiers: []planmodifier.String{
					stringplanmodifier.UseStateForUnknown(),
				},
			},
		},
	}
}

func (r *TriggerResource) Configure(_ context.Context, req resource.ConfigureRequest, resp *resource.ConfigureResponse) {
	if req.ProviderData == nil {
		return
	}
	c, ok := req.ProviderData.(*client.Client)
	if !ok {
		resp.Diagnostics.AddError(
			"unexpected provider data",
			fmt.Sprintf("expected *client.Client, got: %T", req.ProviderData),
		)
		return
	}
	r.client = c
}

func (r *TriggerResource) Create(ctx context.Context, req resource.CreateRequest, resp *resource.CreateResponse) {
	var plan TriggerModel
	resp.Diagnostics.Append(req.Plan.Get(ctx, &plan)...)
	if resp.Diagnostics.HasError() {
		return
	}

	tr, err := r.client.CreateTrigger(ctx, plan.Namespace.ValueString(), client.TriggerRequest{
		Name:        plan.Name.ValueString(),
		Type:        plan.Type.ValueString(),
		FunctionRef: plan.FunctionRef.ValueString(),
		Schedule:    plan.Schedule.ValueString(),
	})
	if err != nil {
		resp.Diagnostics.AddError("create trigger", err.Error())
		return
	}

	resp.Diagnostics.Append(resp.State.Set(ctx, trToModel(tr))...)
}

func (r *TriggerResource) Read(ctx context.Context, req resource.ReadRequest, resp *resource.ReadResponse) {
	var state TriggerModel
	resp.Diagnostics.Append(req.State.Get(ctx, &state)...)
	if resp.Diagnostics.HasError() {
		return
	}

	tr, err := r.client.GetTrigger(ctx, state.Namespace.ValueString(), state.Name.ValueString())
	if err != nil {
		resp.Diagnostics.AddError("read trigger", err.Error())
		return
	}
	if tr == nil {
		resp.State.RemoveResource(ctx)
		return
	}

	resp.Diagnostics.Append(resp.State.Set(ctx, trToModel(tr))...)
}

// Update — никогда не вызывается: все поля имеют RequiresReplace.
// Метод обязателен интерфейсом resource.Resource.
func (r *TriggerResource) Update(_ context.Context, _ resource.UpdateRequest, resp *resource.UpdateResponse) {
	resp.Diagnostics.AddError("update not supported", "all trigger fields require replacement")
}

func (r *TriggerResource) Delete(ctx context.Context, req resource.DeleteRequest, resp *resource.DeleteResponse) {
	var state TriggerModel
	resp.Diagnostics.Append(req.State.Get(ctx, &state)...)
	if resp.Diagnostics.HasError() {
		return
	}

	if err := r.client.DeleteTrigger(ctx, state.Namespace.ValueString(), state.Name.ValueString()); err != nil {
		resp.Diagnostics.AddError("delete trigger", err.Error())
	}
}

// trToModel конвертирует API-ответ → state модель.
func trToModel(tr *client.TriggerResponse) TriggerModel {
	return TriggerModel{
		Namespace:   types.StringValue(tr.Namespace),
		Name:        types.StringValue(tr.Name),
		Type:        types.StringValue(tr.Type),
		FunctionRef: types.StringValue(tr.FunctionRef),
		Schedule:    types.StringValue(tr.Schedule),
		Active:      types.BoolValue(tr.Active),
		URL:         types.StringValue(tr.URL),
	}
}