// Copyright 2024 Google LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

package tools_test

import (
	"bytes"
	"encoding/json"
	"math"
	"reflect"
	"testing"

	yaml "github.com/goccy/go-yaml"
	"github.com/google/go-cmp/cmp"
	"github.com/googleapis/genai-toolbox/internal/testutils"
	"github.com/googleapis/genai-toolbox/internal/tools"
)

func TestParametersMarshal(t *testing.T) {
	ctx, err := testutils.ContextWithNewLogger()
	if err != nil {
		t.Fatalf("unexpected error: %s", err)
	}
	tcs := []struct {
		name string
		in   []map[string]any
		want tools.Parameters
	}{
		{
			name: "string",
			in: []map[string]any{
				{
					"name":        "my_string",
					"type":        "string",
					"description": "this param is a string",
				},
			},
			want: tools.Parameters{
				tools.NewStringParameter("my_string", "this param is a string"),
			},
		},
		{
			name: "int",
			in: []map[string]any{
				{
					"name":        "my_integer",
					"type":        "integer",
					"description": "this param is an int",
				},
			},
			want: tools.Parameters{
				tools.NewIntParameter("my_integer", "this param is an int"),
			},
		},
		{
			name: "float",
			in: []map[string]any{
				{
					"name":        "my_float",
					"type":        "float",
					"description": "my param is a float",
				},
			},
			want: tools.Parameters{
				tools.NewFloatParameter("my_float", "my param is a float"),
			},
		},
		{
			name: "bool",
			in: []map[string]any{
				{
					"name":        "my_bool",
					"type":        "boolean",
					"description": "this param is a boolean",
				},
			},
			want: tools.Parameters{
				tools.NewBooleanParameter("my_bool", "this param is a boolean"),
			},
		},
		{
			name: "string array",
			in: []map[string]any{
				{
					"name":        "my_array",
					"type":        "array",
					"description": "this param is an array of strings",
					"items": map[string]string{
						"name":        "my_string",
						"type":        "string",
						"description": "string item",
					},
				},
			},
			want: tools.Parameters{
				tools.NewArrayParameter("my_array", "this param is an array of strings", tools.NewStringParameter("my_string", "string item")),
			},
		},
		{
			name: "float array",
			in: []map[string]any{
				{
					"name":        "my_array",
					"type":        "array",
					"description": "this param is an array of floats",
					"items": map[string]string{
						"name":        "my_float",
						"type":        "float",
						"description": "float item",
					},
				},
			},
			want: tools.Parameters{
				tools.NewArrayParameter("my_array", "this param is an array of floats", tools.NewFloatParameter("my_float", "float item")),
			},
		},
		{
			name: "string default",
			in: []map[string]any{
				{
					"name":        "my_string",
					"type":        "string",
					"default":     "foo",
					"description": "this param is a string",
				},
			},
			want: tools.Parameters{
				tools.NewStringParameterWithDefault("my_string", "foo", "this param is a string"),
			},
		},
		{
			name: "int default",
			in: []map[string]any{
				{
					"name":        "my_integer",
					"type":        "integer",
					"default":     5,
					"description": "this param is an int",
				},
			},
			want: tools.Parameters{
				tools.NewIntParameterWithDefault("my_integer", uint64(5), "this param is an int"),
			},
		},
		{
			name: "float default",
			in: []map[string]any{
				{
					"name":        "my_float",
					"type":        "float",
					"default":     1.1,
					"description": "my param is a float",
				},
			},
			want: tools.Parameters{
				tools.NewFloatParameterWithDefault("my_float", 1.1, "my param is a float"),
			},
		},
		{
			name: "bool default",
			in: []map[string]any{
				{
					"name":        "my_bool",
					"type":        "boolean",
					"default":     true,
					"description": "this param is a boolean",
				},
			},
			want: tools.Parameters{
				tools.NewBooleanParameterWithDefault("my_bool", true, "this param is a boolean"),
			},
		},
		{
			name: "string array default",
			in: []map[string]any{
				{
					"name":        "my_array",
					"type":        "array",
					"default":     `["foo", "bar"]`,
					"description": "this param is an array of strings",
					"items": map[string]string{
						"name":        "my_string",
						"type":        "string",
						"description": "string item",
					},
				},
			},
			want: tools.Parameters{
				tools.NewArrayParameterWithDefault("my_array", `["foo", "bar"]`, "this param is an array of strings", tools.NewStringParameter("my_string", "string item")),
			},
		},
		{
			name: "float array default",
			in: []map[string]any{
				{
					"name":        "my_array",
					"type":        "array",
					"default":     "[1.0, 1.1]",
					"description": "this param is an array of floats",
					"items": map[string]string{
						"name":        "my_float",
						"type":        "float",
						"description": "float item",
					},
				},
			},
			want: tools.Parameters{
				tools.NewArrayParameterWithDefault("my_array", "[1.0, 1.1]", "this param is an array of floats", tools.NewFloatParameter("my_float", "float item")),
			},
		},
	}
	for _, tc := range tcs {
		t.Run(tc.name, func(t *testing.T) {
			var got tools.Parameters
			// parse map to bytes
			data, err := yaml.Marshal(tc.in)
			if err != nil {
				t.Fatalf("unable to marshal input to yaml: %s", err)
			}
			// parse bytes to object
			err = yaml.UnmarshalContext(ctx, data, &got)
			if err != nil {
				t.Fatalf("unable to unmarshal: %s", err)
			}
			if diff := cmp.Diff(tc.want, got); diff != "" {
				t.Fatalf("incorrect parse: diff %v", diff)
			}
		})
	}
}

func TestAuthParametersMarshal(t *testing.T) {
	ctx, err := testutils.ContextWithNewLogger()
	if err != nil {
		t.Fatalf("unexpected error: %s", err)
	}
	authServices := []tools.ParamAuthService{{Name: "my-google-auth-service", Field: "user_id"}, {Name: "other-auth-service", Field: "user_id"}}
	tcs := []struct {
		name string
		in   []map[string]any
		want tools.Parameters
	}{
		{
			name: "string",
			in: []map[string]any{
				{
					"name":        "my_string",
					"type":        "string",
					"description": "this param is a string",
					"authServices": []map[string]string{
						{
							"name":  "my-google-auth-service",
							"field": "user_id",
						},
						{
							"name":  "other-auth-service",
							"field": "user_id",
						},
					},
				},
			},
			want: tools.Parameters{
				tools.NewStringParameterWithAuth("my_string", "this param is a string", authServices),
			},
		},
		{
			name: "string with authSources",
			in: []map[string]any{
				{
					"name":        "my_string",
					"type":        "string",
					"description": "this param is a string",
					"authSources": []map[string]string{
						{
							"name":  "my-google-auth-service",
							"field": "user_id",
						},
						{
							"name":  "other-auth-service",
							"field": "user_id",
						},
					},
				},
			},
			want: tools.Parameters{
				tools.NewStringParameterWithAuth("my_string", "this param is a string", authServices),
			},
		},
		{
			name: "int",
			in: []map[string]any{
				{
					"name":        "my_integer",
					"type":        "integer",
					"description": "this param is an int",
					"authServices": []map[string]string{
						{
							"name":  "my-google-auth-service",
							"field": "user_id",
						},
						{
							"name":  "other-auth-service",
							"field": "user_id",
						},
					},
				},
			},
			want: tools.Parameters{
				tools.NewIntParameterWithAuth("my_integer", "this param is an int", authServices),
			},
		},
		{
			name: "int with authSources",
			in: []map[string]any{
				{
					"name":        "my_integer",
					"type":        "integer",
					"description": "this param is an int",
					"authSources": []map[string]string{
						{
							"name":  "my-google-auth-service",
							"field": "user_id",
						},
						{
							"name":  "other-auth-service",
							"field": "user_id",
						},
					},
				},
			},
			want: tools.Parameters{
				tools.NewIntParameterWithAuth("my_integer", "this param is an int", authServices),
			},
		},
		{
			name: "float",
			in: []map[string]any{
				{
					"name":        "my_float",
					"type":        "float",
					"description": "my param is a float",
					"authServices": []map[string]string{
						{
							"name":  "my-google-auth-service",
							"field": "user_id",
						},
						{
							"name":  "other-auth-service",
							"field": "user_id",
						},
					},
				},
			},
			want: tools.Parameters{
				tools.NewFloatParameterWithAuth("my_float", "my param is a float", authServices),
			},
		},
		{
			name: "float with authSources",
			in: []map[string]any{
				{
					"name":        "my_float",
					"type":        "float",
					"description": "my param is a float",
					"authSources": []map[string]string{
						{
							"name":  "my-google-auth-service",
							"field": "user_id",
						},
						{
							"name":  "other-auth-service",
							"field": "user_id",
						},
					},
				},
			},
			want: tools.Parameters{
				tools.NewFloatParameterWithAuth("my_float", "my param is a float", authServices),
			},
		},
		{
			name: "bool",
			in: []map[string]any{
				{
					"name":        "my_bool",
					"type":        "boolean",
					"description": "this param is a boolean",
					"authServices": []map[string]string{
						{
							"name":  "my-google-auth-service",
							"field": "user_id",
						},
						{
							"name":  "other-auth-service",
							"field": "user_id",
						},
					},
				},
			},
			want: tools.Parameters{
				tools.NewBooleanParameterWithAuth("my_bool", "this param is a boolean", authServices),
			},
		},
		{
			name: "bool with authSources",
			in: []map[string]any{
				{
					"name":        "my_bool",
					"type":        "boolean",
					"description": "this param is a boolean",
					"authSources": []map[string]string{
						{
							"name":  "my-google-auth-service",
							"field": "user_id",
						},
						{
							"name":  "other-auth-service",
							"field": "user_id",
						},
					},
				},
			},
			want: tools.Parameters{
				tools.NewBooleanParameterWithAuth("my_bool", "this param is a boolean", authServices),
			},
		},
		{
			name: "string array",
			in: []map[string]any{
				{
					"name":        "my_array",
					"type":        "array",
					"description": "this param is an array of strings",
					"items": map[string]string{
						"name":        "my_string",
						"type":        "string",
						"description": "string item",
					},
					"authServices": []map[string]string{
						{
							"name":  "my-google-auth-service",
							"field": "user_id",
						},
						{
							"name":  "other-auth-service",
							"field": "user_id",
						},
					},
				},
			},
			want: tools.Parameters{
				tools.NewArrayParameterWithAuth("my_array", "this param is an array of strings", tools.NewStringParameter("my_string", "string item"), authServices),
			},
		},
		{
			name: "string array with authSources",
			in: []map[string]any{
				{
					"name":        "my_array",
					"type":        "array",
					"description": "this param is an array of strings",
					"items": map[string]string{
						"name":        "my_string",
						"type":        "string",
						"description": "string item",
					},
					"authSources": []map[string]string{
						{
							"name":  "my-google-auth-service",
							"field": "user_id",
						},
						{
							"name":  "other-auth-service",
							"field": "user_id",
						},
					},
				},
			},
			want: tools.Parameters{
				tools.NewArrayParameterWithAuth("my_array", "this param is an array of strings", tools.NewStringParameter("my_string", "string item"), authServices),
			},
		},
		{
			name: "float array",
			in: []map[string]any{
				{
					"name":        "my_array",
					"type":        "array",
					"description": "this param is an array of floats",
					"items": map[string]string{
						"name":        "my_float",
						"type":        "float",
						"description": "float item",
					},
					"authServices": []map[string]string{
						{
							"name":  "my-google-auth-service",
							"field": "user_id",
						},
						{
							"name":  "other-auth-service",
							"field": "user_id",
						},
					},
				},
			},
			want: tools.Parameters{
				tools.NewArrayParameterWithAuth("my_array", "this param is an array of floats", tools.NewFloatParameter("my_float", "float item"), authServices),
			},
		},
	}
	for _, tc := range tcs {
		t.Run(tc.name, func(t *testing.T) {
			var got tools.Parameters
			// parse map to bytes
			data, err := yaml.Marshal(tc.in)
			if err != nil {
				t.Fatalf("unable to marshal input to yaml: %s", err)
			}
			// parse bytes to object
			err = yaml.UnmarshalContext(ctx, data, &got)
			if err != nil {
				t.Fatalf("unable to unmarshal: %s", err)
			}
			if diff := cmp.Diff(tc.want, got); diff != "" {
				t.Fatalf("incorrect parse: diff %v", diff)
			}
		})
	}
}

func TestParametersParse(t *testing.T) {
	tcs := []struct {
		name   string
		params tools.Parameters
		in     map[string]any
		want   tools.ParamValues
	}{
		{
			name: "string",
			params: tools.Parameters{
				tools.NewStringParameter("my_string", "this param is a string"),
			},
			in: map[string]any{
				"my_string": "hello world",
			},
			want: tools.ParamValues{tools.ParamValue{Name: "my_string", Value: "hello world"}},
		},
		{
			name: "not string",
			params: tools.Parameters{
				tools.NewStringParameter("my_string", "this param is a string"),
			},
			in: map[string]any{
				"my_string": 4,
			},
		},
		{
			name: "int",
			params: tools.Parameters{
				tools.NewIntParameter("my_int", "this param is an int"),
			},
			in: map[string]any{
				"my_int": 100,
			},
			want: tools.ParamValues{tools.ParamValue{Name: "my_int", Value: 100}},
		},
		{
			name: "not int",
			params: tools.Parameters{
				tools.NewIntParameter("my_int", "this param is an int"),
			},
			in: map[string]any{
				"my_int": 14.5,
			},
		},
		{
			name: "not int (big)",
			params: tools.Parameters{
				tools.NewIntParameter("my_int", "this param is an int"),
			},
			in: map[string]any{
				"my_int": math.MaxInt64,
			},
			want: tools.ParamValues{tools.ParamValue{Name: "my_int", Value: math.MaxInt64}},
		},
		{
			name: "float",
			params: tools.Parameters{
				tools.NewFloatParameter("my_float", "this param is a float"),
			},
			in: map[string]any{
				"my_float": 1.5,
			},
			want: tools.ParamValues{tools.ParamValue{Name: "my_float", Value: 1.5}},
		},
		{
			name: "not float",
			params: tools.Parameters{
				tools.NewFloatParameter("my_float", "this param is a float"),
			},
			in: map[string]any{
				"my_float": true,
			},
		},
		{
			name: "bool",
			params: tools.Parameters{
				tools.NewBooleanParameter("my_bool", "this param is a bool"),
			},
			in: map[string]any{
				"my_bool": true,
			},
			want: tools.ParamValues{tools.ParamValue{Name: "my_bool", Value: true}},
		},
		{
			name: "not bool",
			params: tools.Parameters{
				tools.NewBooleanParameter("my_bool", "this param is a bool"),
			},
			in: map[string]any{
				"my_bool": 1.5,
			},
		},
		{
			name: "string default",
			params: tools.Parameters{
				tools.NewStringParameterWithDefault("my_string", "foo", "this param is a string"),
			},
			in:   map[string]any{},
			want: tools.ParamValues{tools.ParamValue{Name: "my_string", Value: "foo"}},
		},
		{
			name: "int default",
			params: tools.Parameters{
				tools.NewIntParameterWithDefault("my_int", 100, "this param is an int"),
			},
			in:   map[string]any{},
			want: tools.ParamValues{tools.ParamValue{Name: "my_int", Value: 100}},
		},
		{
			name: "int (big)",
			params: tools.Parameters{
				tools.NewIntParameterWithDefault("my_big_int", math.MaxInt64, "this param is an int"),
			},
			in:   map[string]any{},
			want: tools.ParamValues{tools.ParamValue{Name: "my_big_int", Value: math.MaxInt64}},
		},
		{
			name: "float default",
			params: tools.Parameters{
				tools.NewFloatParameterWithDefault("my_float", 1.1, "this param is a float"),
			},
			in:   map[string]any{},
			want: tools.ParamValues{tools.ParamValue{Name: "my_float", Value: 1.1}},
		},
		{
			name: "bool default",
			params: tools.Parameters{
				tools.NewBooleanParameterWithDefault("my_bool", true, "this param is a bool"),
			},
			in:   map[string]any{},
			want: tools.ParamValues{tools.ParamValue{Name: "my_bool", Value: true}},
		},
	}
	for _, tc := range tcs {
		t.Run(tc.name, func(t *testing.T) {
			// parse map to bytes
			data, err := json.Marshal(tc.in)
			if err != nil {
				t.Fatalf("unable to marshal input to yaml: %s", err)
			}
			// parse bytes to object
			var m map[string]any

			d := json.NewDecoder(bytes.NewReader(data))
			d.UseNumber()
			err = d.Decode(&m)
			if err != nil {
				t.Fatalf("unable to unmarshal: %s", err)
			}

			wantErr := len(tc.want) == 0 // error is expected if no items in want
			gotAll, err := tools.ParseParams(tc.params, m, make(map[string]map[string]any))
			if err != nil {
				if wantErr {
					return
				}
				t.Fatalf("unexpected error from ParseParams: %s", err)
			}
			if wantErr {
				t.Fatalf("expected error but Param parsed successfully: %s", gotAll)
			}
			for i, got := range gotAll {
				want := tc.want[i]
				if got != want {
					t.Fatalf("unexpected value: got %q, want %q", got, want)
				}
				gotType, wantType := reflect.TypeOf(got), reflect.TypeOf(want)
				if gotType != wantType {
					t.Fatalf("unexpected value: got %q, want %q", got, want)
				}
			}
		})
	}
}

func TestAuthParametersParse(t *testing.T) {
	authServices := []tools.ParamAuthService{
		{
			Name:  "my-google-auth-service",
			Field: "auth_field",
		},
		{
			Name:  "other-auth-service",
			Field: "other_auth_field",
		}}
	tcs := []struct {
		name      string
		params    tools.Parameters
		in        map[string]any
		claimsMap map[string]map[string]any
		want      tools.ParamValues
	}{
		{
			name: "string",
			params: tools.Parameters{
				tools.NewStringParameterWithAuth("my_string", "this param is a string", authServices),
			},
			in: map[string]any{
				"my_string": "hello world",
			},
			claimsMap: map[string]map[string]any{"my-google-auth-service": {"auth_field": "hello"}},
			want:      tools.ParamValues{tools.ParamValue{Name: "my_string", Value: "hello"}},
		},
		{
			name: "not string",
			params: tools.Parameters{
				tools.NewStringParameterWithAuth("my_string", "this param is a string", authServices),
			},
			in: map[string]any{
				"my_string": 4,
			},
			claimsMap: map[string]map[string]any{},
		},
		{
			name: "int",
			params: tools.Parameters{
				tools.NewIntParameterWithAuth("my_int", "this param is an int", authServices),
			},
			in: map[string]any{
				"my_int": 100,
			},
			claimsMap: map[string]map[string]any{"other-auth-service": {"other_auth_field": 120}},
			want:      tools.ParamValues{tools.ParamValue{Name: "my_int", Value: 120}},
		},
		{
			name: "not int",
			params: tools.Parameters{
				tools.NewIntParameterWithAuth("my_int", "this param is an int", authServices),
			},
			in: map[string]any{
				"my_int": 14.5,
			},
			claimsMap: map[string]map[string]any{},
		},
		{
			name: "float",
			params: tools.Parameters{
				tools.NewFloatParameterWithAuth("my_float", "this param is a float", authServices),
			},
			in: map[string]any{
				"my_float": 1.5,
			},
			claimsMap: map[string]map[string]any{"my-google-auth-service": {"auth_field": 2.1}},
			want:      tools.ParamValues{tools.ParamValue{Name: "my_float", Value: 2.1}},
		},
		{
			name: "not float",
			params: tools.Parameters{
				tools.NewFloatParameterWithAuth("my_float", "this param is a float", authServices),
			},
			in: map[string]any{
				"my_float": true,
			},
			claimsMap: map[string]map[string]any{},
		},
		{
			name: "bool",
			params: tools.Parameters{
				tools.NewBooleanParameterWithAuth("my_bool", "this param is a bool", authServices),
			},
			in: map[string]any{
				"my_bool": true,
			},
			claimsMap: map[string]map[string]any{"my-google-auth-service": {"auth_field": false}},
			want:      tools.ParamValues{tools.ParamValue{Name: "my_bool", Value: false}},
		},
		{
			name: "not bool",
			params: tools.Parameters{
				tools.NewBooleanParameterWithAuth("my_bool", "this param is a bool", authServices),
			},
			in: map[string]any{
				"my_bool": 1.5,
			},
			claimsMap: map[string]map[string]any{},
		},
		{
			name: "username",
			params: tools.Parameters{
				tools.NewStringParameterWithAuth("username", "username string", authServices),
			},
			in: map[string]any{
				"username": "Violet",
			},
			claimsMap: map[string]map[string]any{"my-google-auth-service": {"auth_field": "Alice"}},
			want:      tools.ParamValues{tools.ParamValue{Name: "username", Value: "Alice"}},
		},
		{
			name: "expect claim error",
			params: tools.Parameters{
				tools.NewStringParameterWithAuth("username", "username string", authServices),
			},
			in: map[string]any{
				"username": "Violet",
			},
			claimsMap: map[string]map[string]any{"my-google-auth-service": {"not_an_auth_field": "Alice"}},
		},
	}
	for _, tc := range tcs {
		t.Run(tc.name, func(t *testing.T) {
			// parse map to bytes
			data, err := json.Marshal(tc.in)
			if err != nil {
				t.Fatalf("unable to marshal input to yaml: %s", err)
			}
			// parse bytes to object
			var m map[string]any
			d := json.NewDecoder(bytes.NewReader(data))
			d.UseNumber()
			err = d.Decode(&m)
			if err != nil {
				t.Fatalf("unable to unmarshal: %s", err)
			}

			gotAll, err := tools.ParseParams(tc.params, m, tc.claimsMap)
			if err != nil {
				if len(tc.want) == 0 {
					// error is expected if no items in want
					return
				}
				t.Fatalf("unexpected error from ParseParams: %s", err)
			}
			for i, got := range gotAll {
				want := tc.want[i]
				if got != want {
					t.Fatalf("unexpected value: got %q, want %q", got, want)
				}
				gotType, wantType := reflect.TypeOf(got), reflect.TypeOf(want)
				if gotType != wantType {
					t.Fatalf("unexpected value: got %q, want %q", got, want)
				}
			}
		})
	}
}

func TestParamValues(t *testing.T) {
	tcs := []struct {
		name              string
		in                tools.ParamValues
		wantSlice         []any
		wantMap           map[string]interface{}
		wantMapOrdered    map[string]interface{}
		wantMapWithDollar map[string]interface{}
	}{
		{
			name:           "string",
			in:             tools.ParamValues{tools.ParamValue{Name: "my_bool", Value: true}, tools.ParamValue{Name: "my_string", Value: "hello world"}},
			wantSlice:      []any{true, "hello world"},
			wantMap:        map[string]interface{}{"my_bool": true, "my_string": "hello world"},
			wantMapOrdered: map[string]interface{}{"p1": true, "p2": "hello world"},
			wantMapWithDollar: map[string]interface{}{
				"$my_bool":   true,
				"$my_string": "hello world",
			},
		},
	}
	for _, tc := range tcs {
		t.Run(tc.name, func(t *testing.T) {
			gotSlice := tc.in.AsSlice()
			gotMap := tc.in.AsMap()
			gotMapOrdered := tc.in.AsMapByOrderedKeys()
			gotMapWithDollar := tc.in.AsMapWithDollarPrefix()

			for i, got := range gotSlice {
				want := tc.wantSlice[i]
				if got != want {
					t.Fatalf("unexpected value: got %q, want %q", got, want)
				}
			}
			for i, got := range gotMap {
				want := tc.wantMap[i]
				if got != want {
					t.Fatalf("unexpected value: got %q, want %q", got, want)
				}
			}
			for i, got := range gotMapOrdered {
				want := tc.wantMapOrdered[i]
				if got != want {
					t.Fatalf("unexpected value: got %q, want %q", got, want)
				}
			}
			for key, got := range gotMapWithDollar {
				want := tc.wantMapWithDollar[key]
				if got != want {
					t.Fatalf("unexpected value in AsMapWithDollarPrefix: got %q, want %q", got, want)
				}
			}
		})
	}
}

func TestParamManifest(t *testing.T) {
	tcs := []struct {
		name string
		in   tools.Parameter
		want tools.ParameterManifest
	}{
		{
			name: "string",
			in:   tools.NewStringParameter("foo-string", "bar"),
			want: tools.ParameterManifest{Name: "foo-string", Type: "string", Required: true, Description: "bar", AuthServices: []string{}},
		},
		{
			name: "int",
			in:   tools.NewIntParameter("foo-int", "bar"),
			want: tools.ParameterManifest{Name: "foo-int", Type: "integer", Required: true, Description: "bar", AuthServices: []string{}},
		},
		{
			name: "float",
			in:   tools.NewFloatParameter("foo-float", "bar"),
			want: tools.ParameterManifest{Name: "foo-float", Type: "float", Required: true, Description: "bar", AuthServices: []string{}},
		},
		{
			name: "boolean",
			in:   tools.NewBooleanParameter("foo-bool", "bar"),
			want: tools.ParameterManifest{Name: "foo-bool", Type: "boolean", Required: true, Description: "bar", AuthServices: []string{}},
		},
		{
			name: "array",
			in:   tools.NewArrayParameter("foo-array", "bar", tools.NewStringParameter("foo-string", "bar")),
			want: tools.ParameterManifest{
				Name:         "foo-array",
				Type:         "array",
				Required:     true,
				Description:  "bar",
				AuthServices: []string{},
				Items:        &tools.ParameterManifest{Name: "foo-string", Type: "string", Required: true, Description: "bar", AuthServices: []string{}},
			},
		},
		{
			name: "string default",
			in:   tools.NewStringParameterWithDefault("foo-string", "foo", "bar"),
			want: tools.ParameterManifest{Name: "foo-string", Type: "string", Required: false, Description: "bar", AuthServices: []string{}},
		},
		{
			name: "int default",
			in:   tools.NewIntParameterWithDefault("foo-int", 1, "bar"),
			want: tools.ParameterManifest{Name: "foo-int", Type: "integer", Required: false, Description: "bar", AuthServices: []string{}},
		},
		{
			name: "float default",
			in:   tools.NewFloatParameterWithDefault("foo-float", 1.1, "bar"),
			want: tools.ParameterManifest{Name: "foo-float", Type: "float", Required: false, Description: "bar", AuthServices: []string{}},
		},
		{
			name: "boolean default",
			in:   tools.NewBooleanParameterWithDefault("foo-bool", true, "bar"),
			want: tools.ParameterManifest{Name: "foo-bool", Type: "boolean", Required: false, Description: "bar", AuthServices: []string{}},
		},
		{
			name: "array default",
			in:   tools.NewArrayParameterWithDefault("foo-array", `["foo", "bar"]`, "bar", tools.NewStringParameter("foo-string", "bar")),
			want: tools.ParameterManifest{
				Name:         "foo-array",
				Type:         "array",
				Required:     false,
				Description:  "bar",
				AuthServices: []string{},
				Items:        &tools.ParameterManifest{Name: "foo-string", Type: "string", Required: true, Description: "bar", AuthServices: []string{}},
			},
		},
	}
	for _, tc := range tcs {
		t.Run(tc.name, func(t *testing.T) {
			got := tc.in.Manifest()
			if !reflect.DeepEqual(got, tc.want) {
				t.Fatalf("unexpected manifest: got %+v, want %+v", got, tc.want)
			}
		})
	}
}

func TestParamMcpManifest(t *testing.T) {
	tcs := []struct {
		name string
		in   tools.Parameter
		want tools.ParameterMcpManifest
	}{
		{
			name: "string",
			in:   tools.NewStringParameter("foo-string", "bar"),
			want: tools.ParameterMcpManifest{Type: "string", Description: "bar"},
		},
		{
			name: "int",
			in:   tools.NewIntParameter("foo-int", "bar"),
			want: tools.ParameterMcpManifest{Type: "integer", Description: "bar"},
		},
		{
			name: "float",
			in:   tools.NewFloatParameter("foo-float", "bar"),
			want: tools.ParameterMcpManifest{Type: "float", Description: "bar"},
		},
		{
			name: "boolean",
			in:   tools.NewBooleanParameter("foo-bool", "bar"),
			want: tools.ParameterMcpManifest{Type: "boolean", Description: "bar"},
		},
		{
			name: "array",
			in:   tools.NewArrayParameter("foo-array", "bar", tools.NewStringParameter("foo-string", "bar")),
			want: tools.ParameterMcpManifest{
				Type:        "array",
				Description: "bar",
				Items:       &tools.ParameterMcpManifest{Type: "string", Description: "bar"},
			},
		},
	}
	for _, tc := range tcs {
		t.Run(tc.name, func(t *testing.T) {
			got := tc.in.McpManifest()
			if !reflect.DeepEqual(got, tc.want) {
				t.Fatalf("unexpected manifest: got %+v, want %+v", got, tc.want)
			}
		})
	}
}

func TestMcpManifest(t *testing.T) {
	tcs := []struct {
		name string
		in   tools.Parameters
		want tools.McpToolsSchema
	}{
		{
			name: "string",
			in: tools.Parameters{
				tools.NewStringParameterWithDefault("foo-string", "foo", "bar"),
				tools.NewStringParameter("foo-string2", "bar"),
				tools.NewIntParameterWithDefault("foo-int", 1, "bar"),
				tools.NewIntParameter("foo-int2", "bar"),
				tools.NewArrayParameterWithDefault("foo-array", []string{"hello", "world"}, "bar", tools.NewStringParameter("foo-string", "bar")),
				tools.NewArrayParameter("foo-array2", "bar", tools.NewStringParameter("foo-string", "bar")),
			},
			want: tools.McpToolsSchema{
				Type: "object",
				Properties: map[string]tools.ParameterMcpManifest{
					"foo-string":  tools.ParameterMcpManifest{Type: "string", Description: "bar"},
					"foo-string2": tools.ParameterMcpManifest{Type: "string", Description: "bar"},
					"foo-int":     tools.ParameterMcpManifest{Type: "integer", Description: "bar"},
					"foo-int2":    tools.ParameterMcpManifest{Type: "integer", Description: "bar"},
					"foo-array": tools.ParameterMcpManifest{
						Type:        "array",
						Description: "bar",
						Items:       &tools.ParameterMcpManifest{Type: "string", Description: "bar"},
					},
					"foo-array2": tools.ParameterMcpManifest{
						Type:        "array",
						Description: "bar",
						Items:       &tools.ParameterMcpManifest{Type: "string", Description: "bar"},
					},
				},
				Required: []string{"foo-string2", "foo-int2", "foo-array2"},
			},
		},
	}
	for _, tc := range tcs {
		t.Run(tc.name, func(t *testing.T) {
			got := tc.in.McpManifest()
			if !reflect.DeepEqual(got, tc.want) {
				t.Fatalf("unexpected manifest: got %+v, want %+v", got, tc.want)
			}
		})
	}
}

func TestFailParametersUnmarshal(t *testing.T) {
	ctx, err := testutils.ContextWithNewLogger()
	if err != nil {
		t.Fatalf("unexpected error: %s", err)
	}
	tcs := []struct {
		name string
		in   []map[string]any
		err  string
	}{
		{
			name: "common parameter missing name",
			in: []map[string]any{
				{
					"type":        "string",
					"description": "this is a param for string",
				},
			},
			err: "unable to parse as \"string\": Key: 'CommonParameter.Name' Error:Field validation for 'Name' failed on the 'required' tag",
		},
		{
			name: "common parameter missing type",
			in: []map[string]any{
				{
					"name":        "string",
					"description": "this is a param for string",
				},
			},
			err: "parameter is missing 'type' field: %!w(<nil>)",
		},
		{
			name: "common parameter missing description",
			in: []map[string]any{
				{
					"name": "my_string",
					"type": "string",
				},
			},
			err: "unable to parse as \"string\": Key: 'CommonParameter.Desc' Error:Field validation for 'Desc' failed on the 'required' tag",
		},
		{
			name: "array parameter missing items",
			in: []map[string]any{
				{
					"name":        "my_array",
					"type":        "array",
					"description": "this param is an array of strings",
				},
			},
			err: "unable to parse as \"array\": unable to parse 'items' field: error parsing parameters: nothing to unmarshal",
		},
		{
			name: "array parameter missing items' name",
			in: []map[string]any{
				{
					"name":        "my_array",
					"type":        "array",
					"description": "this param is an array of strings",
					"items": map[string]string{
						"type":        "string",
						"description": "string item",
					},
				},
			},
			err: "unable to parse as \"array\": unable to parse 'items' field: unable to parse as \"string\": Key: 'CommonParameter.Name' Error:Field validation for 'Name' failed on the 'required' tag",
		},
	}
	for _, tc := range tcs {
		t.Run(tc.name, func(t *testing.T) {
			var got tools.Parameters
			// parse map to bytes
			data, err := yaml.Marshal(tc.in)
			if err != nil {
				t.Fatalf("unable to marshal input to yaml: %s", err)
			}
			// parse bytes to object
			err = yaml.UnmarshalContext(ctx, data, &got)
			if err == nil {
				t.Fatalf("expect parsing to fail")
			}
			errStr := err.Error()
			if errStr != tc.err {
				t.Fatalf("unexpected error: got %q, want %q", errStr, tc.err)
			}
		})
	}
}

func TestConvertArrayParamToString(t *testing.T) {
	tcs := []struct {
		name string
		in   []any
		want string
	}{
		{
			in: []any{
				"id",
				"name",
				"location",
			},
			want: "id, name, location",
		},
		{
			in: []any{
				"id",
			},
			want: "id",
		},
		{
			in: []any{
				"id",
				"5",
				"false",
			},
			want: "id, 5, false",
		},
		{
			in:   []any{},
			want: "",
		},
		{
			in:   []any{},
			want: "",
		},
	}
	for _, tc := range tcs {
		t.Run(tc.name, func(t *testing.T) {
			got, _ := tools.ConvertArrayParamToString(tc.in)
			if diff := cmp.Diff(tc.want, got); diff != "" {
				t.Fatalf("incorrect array param conversion: diff %v", diff)
			}
		})
	}
}

func TestFailConvertArrayParamToString(t *testing.T) {
	tcs := []struct {
		name string
		in   []any
		err  string
	}{
		{
			in:  []any{5, 10, 15},
			err: "templateParameter only supports string arrays",
		},
		{
			in:  []any{"id", "name", 15},
			err: "templateParameter only supports string arrays",
		},
		{
			in:  []any{false},
			err: "templateParameter only supports string arrays",
		},
		{
			in:  []any{10, true},
			err: "templateParameter only supports string arrays",
		},
	}
	for _, tc := range tcs {
		t.Run(tc.name, func(t *testing.T) {
			_, err := tools.ConvertArrayParamToString(tc.in)
			errStr := err.Error()
			if errStr != tc.err {
				t.Fatalf("unexpected error: got %q, want %q", errStr, tc.err)
			}
		})
	}
}

func TestGetParams(t *testing.T) {
	tcs := []struct {
		name   string
		in     map[string]any
		params tools.Parameters
		want   tools.ParamValues
	}{
		{
			name: "parameters to include and exclude",
			params: tools.Parameters{
				tools.NewStringParameter("my_string_inc", "this should be included"),
				tools.NewStringParameter("my_string_inc2", "this should be included"),
			},
			in: map[string]any{
				"my_string_inc":  "hello world A",
				"my_string_inc2": "hello world B",
				"my_string_exc":  "hello world C",
			},
			want: tools.ParamValues{
				tools.ParamValue{Name: "my_string_inc", Value: "hello world A"},
				tools.ParamValue{Name: "my_string_inc2", Value: "hello world B"},
			},
		},
		{
			name: "include all",
			params: tools.Parameters{
				tools.NewStringParameter("my_string_inc", "this should be included"),
			},
			in: map[string]any{
				"my_string_inc": "hello world A",
			},
			want: tools.ParamValues{
				tools.ParamValue{Name: "my_string_inc", Value: "hello world A"},
			},
		},
		{
			name:   "exclude all",
			params: tools.Parameters{},
			in: map[string]any{
				"my_string_exc":  "hello world A",
				"my_string_exc2": "hello world B",
			},
			want: tools.ParamValues{},
		},
		{
			name:   "empty",
			params: tools.Parameters{},
			in:     map[string]any{},
			want:   tools.ParamValues{},
		},
	}
	for _, tc := range tcs {
		t.Run(tc.name, func(t *testing.T) {
			got, _ := tools.GetParams(tc.params, tc.in)
			if diff := cmp.Diff(tc.want, got); diff != "" {
				t.Fatalf("incorrect get params: diff %v", diff)
			}
		})
	}
}

func TestFailGetParams(t *testing.T) {
	tcs := []struct {
		name   string
		params tools.Parameters
		in     map[string]any
		err    string
	}{
		{
			name:   "missing the only parameter",
			params: tools.Parameters{tools.NewStringParameter("my_string", "this was missing")},
			in:     map[string]any{},
			err:    "missing parameter my_string",
		},
		{
			name: "missing one parameter of multiple",
			params: tools.Parameters{
				tools.NewStringParameter("my_string_inc", "this should be included"),
				tools.NewStringParameter("my_string_exc", "this was missing"),
			},
			in: map[string]any{
				"my_string_inc": "hello world A",
			},
			err: "missing parameter my_string_exc",
		},
	}
	for _, tc := range tcs {
		t.Run(tc.name, func(t *testing.T) {
			_, err := tools.GetParams(tc.params, tc.in)
			errStr := err.Error()
			if errStr != tc.err {
				t.Fatalf("unexpected error: got %q, want %q", errStr, tc.err)
			}
		})
	}
}

func TestResolveTemplateParameters(t *testing.T) {
	tcs := []struct {
		name           string
		templateParams tools.Parameters
		statement      string
		in             map[string]any
		want           string
	}{
		{
			name: "single template parameter",
			templateParams: tools.Parameters{
				tools.NewStringParameter("tableName", "this is a string template parameter"),
			},
			statement: "SELECT * FROM {{.tableName}}",
			in: map[string]any{
				"tableName": "hotels",
			},
			want: "SELECT * FROM hotels",
		},
		{
			name: "multiple template parameters",
			templateParams: tools.Parameters{
				tools.NewStringParameter("tableName", "this is a string template parameter"),
				tools.NewStringParameter("columnName", "this is a string template parameter"),
			},
			statement: "SELECT * FROM {{.tableName}} WHERE {{.columnName}} = 'Hilton'",
			in: map[string]any{
				"tableName":  "hotels",
				"columnName": "name",
			},
			want: "SELECT * FROM hotels WHERE name = 'Hilton'",
		},
		{
			name: "standard and template parameter",
			templateParams: tools.Parameters{
				tools.NewStringParameter("tableName", "this is a string template parameter"),
				tools.NewStringParameter("hotelName", "this is a string parameter"),
			},
			statement: "SELECT * FROM {{.tableName}} WHERE name = $1",
			in: map[string]any{
				"tableName": "hotels",
				"hotelName": "name",
			},
			want: "SELECT * FROM hotels WHERE name = $1",
		},
		{
			name: "standard parameter",
			templateParams: tools.Parameters{
				tools.NewStringParameter("hotelName", "this is a string parameter"),
			},
			statement: "SELECT * FROM hotels WHERE name = $1",
			in: map[string]any{
				"hotelName": "hotels",
			},
			want: "SELECT * FROM hotels WHERE name = $1",
		},
	}
	for _, tc := range tcs {
		t.Run(tc.name, func(t *testing.T) {
			got, _ := tools.ResolveTemplateParams(tc.templateParams, tc.statement, tc.in)
			if diff := cmp.Diff(tc.want, got); diff != "" {
				t.Fatalf("incorrect resolved template params: diff %v", diff)
			}
		})
	}
}

func TestFailResolveTemplateParameters(t *testing.T) {
	tcs := []struct {
		name           string
		templateParams tools.Parameters
		statement      string
		in             map[string]any
		err            string
	}{
		{
			name: "wrong param name",
			templateParams: tools.Parameters{
				tools.NewStringParameter("tableName", "this is a string template parameter"),
			},
			statement: "SELECT * FROM {{.missingParam}}",
			in:        map[string]any{},
			err:       "error getting template params missing parameter tableName",
		},
		{
			name: "incomplete param template",
			templateParams: tools.Parameters{
				tools.NewStringParameter("tableName", "this is a string template parameter"),
			},
			statement: "SELECT * FROM {{.tableName",
			in: map[string]any{
				"tableName": "hotels",
			},
			err: "error creating go template template: statement:1: unclosed action",
		},
		{
			name: "undefined function",
			templateParams: tools.Parameters{
				tools.NewStringParameter("tableName", "this is a string template parameter"),
			},
			statement: "SELECT * FROM {{json .tableName}}",
			in: map[string]any{
				"tableName": "hotels",
			},
			err: "error creating go template template: statement:1: function \"json\" not defined",
		},
		{
			name: "undefined method",
			templateParams: tools.Parameters{
				tools.NewStringParameter("tableName", "this is a string template parameter"),
			},
			statement: "SELECT * FROM {{.tableName .wrong}}",
			in: map[string]any{
				"tableName": "hotels",
			},
			err: "error executing go template template: statement:1:16: executing \"statement\" at <.tableName>: tableName is not a method but has arguments",
		},
	}
	for _, tc := range tcs {
		t.Run(tc.name, func(t *testing.T) {
			_, err := tools.ResolveTemplateParams(tc.templateParams, tc.statement, tc.in)
			errStr := err.Error()
			if errStr != tc.err {
				t.Fatalf("unexpected error: got %q, want %q", errStr, tc.err)
			}
		})
	}
}