package schema

import (
	"context"
	"time"

	"entgo.io/ent"
	"entgo.io/ent/dialect"
	"entgo.io/ent/schema/edge"
	"entgo.io/ent/schema/field"
	"entgo.io/ent/schema/index"
	"github.com/cloudreve/Cloudreve/v4/ent/hook"
	"github.com/cloudreve/Cloudreve/v4/inventory/types"
)

// File holds the schema definition for the File entity.
type File struct {
	ent.Schema
}

// Fields of the File.
func (File) Fields() []ent.Field {
	return []ent.Field{
		field.Time("created_at").
			Immutable().
			Default(time.Now).
			SchemaType(map[string]string{
				dialect.MySQL: "datetime",
			}),
		field.Time("updated_at").
			Default(time.Now).
			SchemaType(map[string]string{
				dialect.MySQL: "datetime",
			}),
		field.Int("type"),
		field.String("name"),
		field.Int("owner_id"),
		field.Int64("size").
			Default(0),
		field.Int("primary_entity").
			Optional(),
		field.Int("file_children").
			Optional(),
		field.Bool("is_symbolic").
			Default(false),
		field.JSON("props", &types.FileProps{}).Optional(),
		field.Int("storage_policy_files").
			Optional(),
	}
}

// Edges of the File.
func (File) Edges() []ent.Edge {
	return []ent.Edge{
		edge.From("owner", User.Type).
			Ref("files").
			Field("owner_id").
			Unique().
			Required(),
		edge.From("storage_policies", StoragePolicy.Type).
			Ref("files").
			Field("storage_policy_files").
			Unique(),
		edge.To("children", File.Type).
			From("parent").
			Field("file_children").
			Unique(),
		edge.To("metadata", Metadata.Type),
		edge.To("entities", Entity.Type),
		edge.To("shares", Share.Type),
		edge.To("direct_links", DirectLink.Type),
	}
}

// Indexes of the File.
func (File) Indexes() []ent.Index {
	return []ent.Index{
		index.Fields("file_children", "name").
			Unique(),
		index.Fields("file_children", "type", "updated_at"),
		index.Fields("file_children", "type", "size"),
	}
}

func (f File) Hooks() []ent.Hook {
	return []ent.Hook{
		hook.On(func(next ent.Mutator) ent.Mutator {
			return ent.MutateFunc(func(ctx context.Context, m ent.Mutation) (ent.Value, error) {
				if s, ok := m.(interface{ SetUpdatedAt(time.Time) }); ok {
					_, set := m.Field("updated_at")
					if !set {
						s.SetUpdatedAt(time.Now())
					}
				}
				v, err := next.Mutate(ctx, m)
				return v, err
			})
		}, ent.OpUpdate|ent.OpUpdateOne),
	}
}