package shape

import (
	"context"
	"testing"

	"gitea.maximumdirect.net/eric/notarius/internal/framework/contracts"
	"gitea.maximumdirect.net/eric/notarius/internal/framework/pipeline"
)

func TestValidatorApprovesWellFormedSpellPayload(t *testing.T) {
	result, err := New().Validate(context.Background(), requestWithPayload(`{"spell_casts":[{"caster":"Aria","spell":"Cure Wounds","effect":"heals","narrative_description":"Aria heals Borin.","source_refs":[{"source_id":"session","start_unit_id":1,"end_unit_id":1}]}]}`))
	if err != nil {
		t.Fatalf("Validate() error = %v, want nil", err)
	}
	if !result.Approved {
		t.Fatalf("Validate() = %#v, want approved", result)
	}
}

func TestValidatorRejectsMalformedPayload(t *testing.T) {
	result, err := New().Validate(context.Background(), requestWithPayload(`{"spell_casts":`))
	if err != nil {
		t.Fatalf("Validate() error = %v, want nil", err)
	}
	if result.Approved {
		t.Fatalf("Approved = true, want false")
	}
	if result.ReasonCode != ReasonCode {
		t.Fatalf("ReasonCode = %q, want %q", result.ReasonCode, ReasonCode)
	}
}

func TestValidatorRejectsMissingRequiredSpellFields(t *testing.T) {
	result, err := New().Validate(context.Background(), requestWithPayload(`{"spell_casts":[{"caster":"Aria","effect":"heals","narrative_description":"Aria heals Borin.","source_refs":[{"source_id":"session","start_unit_id":1,"end_unit_id":1}]}]}`))
	if err != nil {
		t.Fatalf("Validate() error = %v, want nil", err)
	}
	if result.Approved {
		t.Fatalf("Approved = true, want false")
	}
	if result.ReasonCode != ReasonCode {
		t.Fatalf("ReasonCode = %q, want %q", result.ReasonCode, ReasonCode)
	}
}

func TestSpecAndRegister(t *testing.T) {
	registry := pipeline.NewValidatorRegistry()
	if err := Register(registry); err != nil {
		t.Fatalf("Register() error = %v, want nil", err)
	}
	validator, err := registry.BuildLegacyRaw(Key)
	if err != nil {
		t.Fatalf("Build(%q) error = %v, want nil", Key, err)
	}
	if validator.Name() != Key || validator.ExecutionClass() != contracts.ExecutionClassDeterministic {
		t.Fatalf("validator = %q/%q, want key and deterministic execution", validator.Name(), validator.ExecutionClass())
	}
}

func requestWithPayload(payload string) contracts.ValidationRequest {
	return contracts.ValidationRequest{
		Payload: contracts.RawPayload{
			Content:   []byte(payload),
			MediaType: "application/json",
		},
	}
}