package model

import (
	"database/sql"
	"testing"

	"github.com/stretchr/testify/assert"
	"github.com/stretchr/testify/require"
)

func TestBuildParameterDataObjectHashesCreatesCanonicalHashAndLocalAliases(t *testing.T) {
	records := []ParameterInitializationRecord{
		{
			GridTag:            "grid000",
			ZoneTag:            "zone000",
			StationTag:         "station000",
			StationIsLocal:     true,
			ComponentUUID:      "component-uuid",
			ComponentNSPath:    "220kV_xuefulu1",
			ComponentTag:       "cable_22",
			AttributeGroup:     "base_extend",
			AttributeName:      "vnom_kv",
			AttributeValue:     "7800.00",
			AttributeType:      "DOUBLE PRECISION",
			Description:        sql.NullString{String: "额定电压", Valid: true},
			DescriptionCount:   1,
			DynamicRecordCount: 1,
		},
	}

	hashes, err := buildParameterDataObjectHashes(records)
	require.NoError(t, err)
	require.Len(t, hashes, 1)

	fullToken := "grid000.zone000.station000.220kV_xuefulu1.cable_22.base_extend.vnom_kv"
	shortToken := "220kV_xuefulu1.cable_22.base_extend.vnom_kv"
	assert.Equal(t, fullToken, hashes[0].Key)
	assert.Equal(t, []string{fullToken, shortToken}, hashes[0].Aliases)
	assert.Equal(t, "7800.00", hashes[0].Fields["value"])
	assert.Equal(t, "PARAM", hashes[0].Fields["meta"])
	assert.Equal(t, "DOUBLE PRECISION", hashes[0].Fields["type"])
	assert.Equal(t, shortToken, hashes[0].Fields["name"])
	assert.Equal(t, "额定电压", hashes[0].Fields["description"])
	assert.Equal(t, fullToken, hashes[0].Fields["id"])
}

func TestBuildParameterDataObjectHashesSkipsShortKeyForNonLocalStation(t *testing.T) {
	records := []ParameterInitializationRecord{
		{
			GridTag:            "grid",
			ZoneTag:            "zone",
			StationTag:         "station",
			StationIsLocal:     false,
			ComponentUUID:      "component-uuid",
			ComponentNSPath:    "nspath",
			ComponentTag:       "component",
			AttributeGroup:     "stable",
			AttributeName:      "attribute",
			AttributeValue:     "true",
			AttributeType:      "BOOLEAN",
			Description:        sql.NullString{String: "属性", Valid: true},
			DescriptionCount:   1,
			DynamicRecordCount: 1,
		},
	}

	hashes, err := buildParameterDataObjectHashes(records)
	require.NoError(t, err)
	require.Len(t, hashes, 1)
	assert.Equal(t, "grid.zone.station.nspath.component.stable.attribute", hashes[0].Key)
	assert.Equal(t, []string{"grid.zone.station.nspath.component.stable.attribute"}, hashes[0].Aliases)
	assert.Equal(t, true, hashes[0].Fields["value"])
}

func TestBuildParameterDataObjectHashesRejectsAmbiguousShortToken(t *testing.T) {
	baseRecord := ParameterInitializationRecord{
		GridTag:            "grid1",
		ZoneTag:            "zone1",
		StationTag:         "station1",
		StationIsLocal:     true,
		ComponentUUID:      "component-uuid-1",
		ComponentNSPath:    "nspath",
		ComponentTag:       "component",
		AttributeGroup:     "stable",
		AttributeName:      "attribute",
		AttributeValue:     "1",
		AttributeType:      "INTEGER",
		Description:        sql.NullString{String: "属性", Valid: true},
		DescriptionCount:   1,
		DynamicRecordCount: 1,
	}
	otherRecord := baseRecord
	otherRecord.GridTag = "grid2"
	otherRecord.ZoneTag = "zone2"
	otherRecord.StationTag = "station2"
	otherRecord.ComponentUUID = "component-uuid-2"

	_, err := buildParameterDataObjectHashes([]ParameterInitializationRecord{baseRecord, otherRecord})
	require.Error(t, err)
	assert.Contains(t, err.Error(), "ambiguous parameter token")
	assert.Contains(t, err.Error(), "nspath.component.stable.attribute")
}

func TestParameterRedisValuePreservesHashRepresentations(t *testing.T) {
	tests := []struct {
		name     string
		rawValue string
		expected any
	}{
		{name: "null", rawValue: "null", expected: "null"},
		{name: "string", rawValue: `"text"`, expected: "text"},
		{name: "number precision", rawValue: "1234567890.123456789", expected: "1234567890.123456789"},
		{name: "boolean", rawValue: "true", expected: true},
		{name: "object", rawValue: `{"key":"value"}`, expected: `{"key":"value"}`},
	}

	for _, test := range tests {
		t.Run(test.name, func(t *testing.T) {
			actual, err := parameterRedisValue(test.rawValue)
			require.NoError(t, err)
			assert.Equal(t, test.expected, actual)
		})
	}
}