package database

import (
	"context"
	"errors"

	"git.anthrove.art/Anthrove/otter-space-sdk/v4/internal/utils"
	otterError "git.anthrove.art/Anthrove/otter-space-sdk/v4/pkg/error"
	"git.anthrove.art/Anthrove/otter-space-sdk/v4/pkg/models"
	log "github.com/sirupsen/logrus"
	"go.opentelemetry.io/otel/attribute"
	"gorm.io/gorm"
)

func CreateSource(ctx context.Context, source models.Source) (models.Source, error) {
	ctx, span, localLogger := utils.SetupTracing(ctx, tracer, "CreateSource")
	defer span.End()

	utils.HandleEvent(span, localLogger, "Starting source creation")

	if client == nil {
		return models.Source{}, utils.HandleError(ctx, span, localLogger, &otterError.Database{Reason: otterError.DatabaseIsNotConnected})
	}

	result := client.WithContext(ctx).Create(&source)
	if result.Error != nil {
		if errors.Is(result.Error, gorm.ErrDuplicatedKey) {
			return models.Source{}, utils.HandleError(ctx, span, localLogger, &otterError.Database{Reason: otterError.DuplicateKey})
		}
		return models.Source{}, utils.HandleError(ctx, span, localLogger, result.Error)
	}

	localLogger = localLogger.WithFields(log.Fields{
		"source_id": source.ID,
	})

	span.SetAttributes(
		attribute.String("source_id", string(source.ID)),
	)

	utils.HandleEvent(span, localLogger, "Source created successfully")
	return source, nil
}

func CreateSourceInBatch(ctx context.Context, source []models.Source, batchSize int) error {
	ctx, span, localLogger := utils.SetupTracing(ctx, tracer, "CreateSourceInBatch")
	defer span.End()

	localLogger = localLogger.WithFields(log.Fields{
		"source_count": len(source),
		"batch_size":   batchSize,
	})

	span.SetAttributes(
		attribute.Int("batch_size", batchSize),
		attribute.Int("source_count", len(source)),
	)

	utils.HandleEvent(span, localLogger, "Starting batch source creation")

	if client == nil {
		return utils.HandleError(ctx, span, localLogger, &otterError.Database{Reason: otterError.DatabaseIsNotConnected})
	}

	if source == nil || len(source) == 0 {
		return utils.HandleError(ctx, span, localLogger, &otterError.EntityValidationFailed{Reason: otterError.SourceListIsEmpty})
	}

	if batchSize == 0 {
		return utils.HandleError(ctx, span, localLogger, &otterError.EntityValidationFailed{Reason: otterError.BatchSizeIsEmpty})
	}

	result := client.WithContext(ctx).CreateInBatches(&source, batchSize)
	if result.Error != nil {
		if errors.Is(result.Error, gorm.ErrDuplicatedKey) {
			return utils.HandleError(ctx, span, localLogger, &otterError.Database{Reason: otterError.DuplicateKey})
		}
		return utils.HandleError(ctx, span, localLogger, result.Error)
	}

	utils.HandleEvent(span, localLogger, "Batch sources created successfully")
	return nil
}

// UpdateSource updates th source information in the database.
// Only a few parameter can be updated:
//   - DisplayName
//   - Domain
//   - Icon
func UpdateSource(ctx context.Context, source models.Source) error {
	ctx, span, localLogger := utils.SetupTracing(ctx, tracer, "UpdateSource")
	defer span.End()

	localLogger = localLogger.WithFields(log.Fields{
		"source_id": source.ID,
	})

	span.SetAttributes(
		attribute.String("source_id", string(source.ID)),
	)

	utils.HandleEvent(span, localLogger, "Starting source update")

	if client == nil {
		return utils.HandleError(ctx, span, localLogger, &otterError.Database{Reason: otterError.DatabaseIsNotConnected})
	}

	if len(source.ID) == 0 {
		return utils.HandleError(ctx, span, localLogger, &otterError.EntityValidationFailed{Reason: otterError.SourceIDIsEmpty})
	}

	updateSource := models.Source{
		BaseModel: models.BaseModel[models.SourceID]{
			ID: source.ID,
		},
		DisplayName: source.DisplayName,
		Domain:      source.Domain,
		Icon:        source.Icon,
	}

	result := client.WithContext(ctx).Updates(&updateSource)
	if result.Error != nil {
		if errors.Is(result.Error, gorm.ErrRecordNotFound) {
			return utils.HandleError(ctx, span, localLogger, &otterError.Database{Reason: otterError.NoDataFound})
		}
		return utils.HandleError(ctx, span, localLogger, result.Error)
	}

	utils.HandleEvent(span, localLogger, "Source updated successfully")
	return nil
}

func GetSourceByID(ctx context.Context, id models.SourceID) (models.Source, error) {
	ctx, span, localLogger := utils.SetupTracing(ctx, tracer, "GetSourceByID")
	defer span.End()

	localLogger = localLogger.WithFields(log.Fields{
		"source_id": id,
	})

	span.SetAttributes(
		attribute.String("source_id", string(id)),
	)

	utils.HandleEvent(span, localLogger, "Starting get source by ID")

	var source models.Source

	if client == nil {
		return models.Source{}, utils.HandleError(ctx, span, localLogger, &otterError.Database{Reason: otterError.DatabaseIsNotConnected})
	}

	if len(id) == 0 {
		return models.Source{}, utils.HandleError(ctx, span, localLogger, &otterError.EntityValidationFailed{Reason: otterError.SourceIDIsEmpty})
	}

	if len(id) != 25 {
		return models.Source{}, utils.HandleError(ctx, span, localLogger, &otterError.EntityValidationFailed{Reason: otterError.SourceIDToShort})
	}

	result := client.WithContext(ctx).First(&source, "id = ?", id)
	if result.Error != nil {
		if errors.Is(result.Error, gorm.ErrRecordNotFound) {
			return models.Source{}, utils.HandleError(ctx, span, localLogger, &otterError.Database{Reason: otterError.NoDataFound})
		}
		return models.Source{}, utils.HandleError(ctx, span, localLogger, result.Error)
	}

	utils.HandleEvent(span, localLogger, "Source retrieved successfully")
	return source, nil
}

func GetSourceByDomain(ctx context.Context, sourceDomain models.SourceDomain) (models.Source, error) {
	ctx, span, localLogger := utils.SetupTracing(ctx, tracer, "GetSourceByDomain")
	defer span.End()

	localLogger = localLogger.WithFields(log.Fields{
		"source_domain": sourceDomain,
	})

	span.SetAttributes(
		attribute.String("source_domain", string(sourceDomain)),
	)

	utils.HandleEvent(span, localLogger, "Starting get source by domain")

	var source models.Source

	if client == nil {
		return models.Source{}, utils.HandleError(ctx, span, localLogger, &otterError.Database{Reason: otterError.DatabaseIsNotConnected})
	}

	if len(sourceDomain) == 0 {
		return models.Source{}, utils.HandleError(ctx, span, localLogger, &otterError.EntityValidationFailed{Reason: otterError.SourceDomainIsEmpty})
	}

	result := client.WithContext(ctx).First(&source, "domain = ?", sourceDomain)
	if result.Error != nil {
		if errors.Is(result.Error, gorm.ErrRecordNotFound) {
			return models.Source{}, utils.HandleError(ctx, span, localLogger, &otterError.Database{Reason: otterError.NoDataFound})
		}
		return models.Source{}, utils.HandleError(ctx, span, localLogger, result.Error)
	}

	utils.HandleEvent(span, localLogger, "Source retrieved successfully")
	return source, nil
}

func DeleteSource(ctx context.Context, id models.SourceID) error {
	ctx, span, localLogger := utils.SetupTracing(ctx, tracer, "DeleteSource")
	defer span.End()

	localLogger = localLogger.WithFields(log.Fields{
		"source_id": id,
	})

	span.SetAttributes(
		attribute.String("source_id", string(id)),
	)

	utils.HandleEvent(span, localLogger, "Starting delete source")

	var source models.Source

	if client == nil {
		return utils.HandleError(ctx, span, localLogger, &otterError.Database{Reason: otterError.DatabaseIsNotConnected})
	}

	if len(id) == 0 {
		return utils.HandleError(ctx, span, localLogger, &otterError.EntityValidationFailed{Reason: otterError.SourceIDIsEmpty})
	}

	if len(id) != 25 {
		return utils.HandleError(ctx, span, localLogger, &otterError.EntityValidationFailed{Reason: otterError.SourceIDToShort})
	}

	result := client.WithContext(ctx).Delete(&source, id)
	if result.Error != nil {
		if errors.Is(result.Error, gorm.ErrRecordNotFound) {
			return utils.HandleError(ctx, span, localLogger, &otterError.Database{Reason: otterError.NoDataFound})
		}
		return utils.HandleError(ctx, span, localLogger, result.Error)
	}

	utils.HandleEvent(span, localLogger, "Source deleted successfully")
	return nil
}