package handlers

import (
	"testing"
)

func TestValidateManifest_ValidSurface(t *testing.T) {
	m := map[string]any{
		"id":    "my-surface",
		"title": "My Surface",
		"type":  "surface",
	}
	info, err := ValidateManifest(m)
	if err != nil {
		t.Fatalf("unexpected error: %v", err)
	}
	if info.ID != "my-surface" {
		t.Errorf("expected id 'my-surface', got %q", info.ID)
	}
	if info.Type != "surface" {
		t.Errorf("expected type 'surface', got %q", info.Type)
	}
	if info.Version != "0.0.0" {
		t.Errorf("expected default version '0.0.0', got %q", info.Version)
	}
}

func TestValidateManifest_MissingID(t *testing.T) {
	m := map[string]any{
		"title": "No ID",
	}
	_, err := ValidateManifest(m)
	if err == nil {
		t.Fatal("expected error for missing id")
	}
}

func TestValidateManifest_MissingTitle(t *testing.T) {
	m := map[string]any{
		"id": "no-title",
	}
	_, err := ValidateManifest(m)
	if err == nil {
		t.Fatal("expected error for missing title")
	}
}

func TestValidateManifest_InvalidID(t *testing.T) {
	m := map[string]any{
		"id":    "UPPERCASE-BAD",
		"title": "Bad ID",
	}
	_, err := ValidateManifest(m)
	if err == nil {
		t.Fatal("expected error for invalid package id")
	}
}

func TestValidateManifest_InvalidType(t *testing.T) {
	m := map[string]any{
		"id":    "my-pkg",
		"title": "My Package",
		"type":  "invalid",
	}
	_, err := ValidateManifest(m)
	if err == nil {
		t.Fatal("expected error for invalid type")
	}
}

func TestValidateManifest_ExtensionNoTools(t *testing.T) {
	m := map[string]any{
		"id":    "my-ext",
		"title": "My Extension",
		"type":  "extension",
	}
	_, err := ValidateManifest(m)
	if err == nil {
		t.Fatal("expected error for extension without tools/pipes/hooks")
	}
}

func TestValidateManifest_LibraryNoExports(t *testing.T) {
	m := map[string]any{
		"id":    "my-lib",
		"title": "My Library",
		"type":  "library",
	}
	_, err := ValidateManifest(m)
	if err == nil {
		t.Fatal("expected error for library without exports")
	}
}

func TestValidateManifest_ValidLibrary(t *testing.T) {
	m := map[string]any{
		"id":      "my-lib",
		"title":   "My Library",
		"type":    "library",
		"version": "1.2.0",
		"exports": []any{"module_a", "module_b"},
	}
	info, err := ValidateManifest(m)
	if err != nil {
		t.Fatalf("unexpected error: %v", err)
	}
	if info.Version != "1.2.0" {
		t.Errorf("expected version '1.2.0', got %q", info.Version)
	}
	if !info.HasExports {
		t.Error("expected HasExports to be true")
	}
}

func TestValidateManifest_NilManifest(t *testing.T) {
	_, err := ValidateManifest(nil)
	if err == nil {
		t.Fatal("expected error for nil manifest")
	}
}

func TestValidateManifest_SignatureField(t *testing.T) {
	m := map[string]any{
		"id":        "my-pkg",
		"title":     "Signed Package",
		"type":      "surface",
		"signature": "sha256:abc123",
	}
	info, err := ValidateManifest(m)
	if err != nil {
		t.Fatalf("unexpected error: %v", err)
	}
	if info.Signature != "sha256:abc123" {
		t.Errorf("expected signature 'sha256:abc123', got %q", info.Signature)
	}
}

func TestValidateManifest_Dependencies(t *testing.T) {
	m := map[string]any{
		"id":    "consumer",
		"title": "Consumer Package",
		"type":  "surface",
		"dependencies": map[string]any{
			"chat-core": ">=1.0.0",
		},
	}
	info, err := ValidateManifest(m)
	if err != nil {
		t.Fatalf("unexpected error: %v", err)
	}
	if len(info.Dependencies) != 1 {
		t.Errorf("expected 1 dependency, got %d", len(info.Dependencies))
	}
}

func TestValidateManifest_ValidTestRunner(t *testing.T) {
	m := map[string]any{
		"id":    "icd-test-runner",
		"title": "ICD Test Runner",
		"type":  "test-runner",
	}
	info, err := ValidateManifest(m)
	if err != nil {
		t.Fatalf("unexpected error: %v", err)
	}
	if info.Type != "test-runner" {
		t.Errorf("expected type 'test-runner', got %q", info.Type)
	}
}

func TestValidateManifest_TestRunnerWithRequires(t *testing.T) {
	m := map[string]any{
		"id":       "chat-runner",
		"title":    "Chat Runner",
		"type":     "test-runner",
		"requires": []any{"chat", "chat-core"},
	}
	info, err := ValidateManifest(m)
	if err != nil {
		t.Fatalf("unexpected error: %v", err)
	}
	if len(info.Requires) != 2 {
		t.Errorf("expected 2 requires, got %d", len(info.Requires))
	}
	if info.Requires[0] != "chat" || info.Requires[1] != "chat-core" {
		t.Errorf("unexpected requires: %v", info.Requires)
	}
}

func TestValidateManifest_WorkflowNoDef(t *testing.T) {
	m := map[string]any{
		"id":    "my-wf",
		"title": "My Workflow",
		"type":  "workflow",
	}
	_, err := ValidateManifest(m)
	if err == nil {
		t.Fatal("expected error for workflow without workflow_definition")
	}
}