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 CreatePool(ctx context.Context, pool models.Pool) (models.Pool, error) {
	ctx, span, localLogger := utils.SetupTracing(ctx, tracer, "CreatePool")
	defer span.End()

	localLogger = localLogger.WithFields(log.Fields{
		"pool_id": pool.ID,
	})

	span.SetAttributes(
		attribute.String("pool_id", string(pool.ID)),
	)

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

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

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

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

func GetPoolByID(ctx context.Context, id models.PoolID) (models.Pool, error) {
	ctx, span, localLogger := utils.SetupTracing(ctx, tracer, "GetPool")
	defer span.End()

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

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

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

	var pool models.Pool

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

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

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

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

// UpdatePool updates the pool information in the database.
// Only supports changing the Name and the Category of the Pool
func UpdatePool(ctx context.Context, pool models.Pool) error {
	ctx, span, localLogger := utils.SetupTracing(ctx, tracer, "UpdatePool")
	defer span.End()

	localLogger = localLogger.WithFields(log.Fields{
		"pool_id": pool.ID,
	})

	span.SetAttributes(
		attribute.String("pool_id", string(pool.ID)),
	)

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

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

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

	updatePost := models.Pool{
		BaseModel: models.BaseModel[models.PoolID]{
			ID: pool.ID,
		},
		Name:     pool.Name,
		Category: pool.Category,
	}

	result := client.WithContext(ctx).Model(&updatePost).Update("deleted_at", gorm.DeletedAt{})
	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, "pool updated successfully")
	return nil
}

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

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

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

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

	var pool models.Pool

	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.PoolIDIsEmpty})
	}

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

	result := client.WithContext(ctx).Delete(&pool, "id = ?", 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, "pool deleted successfully")
	return nil
}