Feat[BE]: integrate document service into expense module and update related DTOs for document handling

internal/entities/expense.go

@@ -1,7 +1,6 @@
 package entities
 
 import (
-	"database/sql"
 	"time"
 
 	"gorm.io/gorm"
@@ -13,8 +12,6 @@ type Expense struct {
 	SupplierId              uint64         `gorm:""`
 	Category                string         `gorm:"type:varchar(50);not null"`
 	PoNumber                string         `gorm:"type:varchar(50)"`
-	DocumentPath            sql.NullString `gorm:"type:json"`
-	RealizationDocumentPath sql.NullString `gorm:"type:json;column:realization_document_path"`
 	RealizationDate         time.Time      `gorm:"type:date;column:realization_date"`
 	TransactionDate         time.Time      `gorm:"type:date;not null"`
 	Notes                   string         `gorm:"type:text;column:notes"`
@@ -23,8 +20,10 @@ type Expense struct {
 	UpdatedAt               time.Time      `gorm:"autoUpdateTime"`
 	DeletedAt               gorm.DeletedAt `gorm:"index" json:"-"`
 
-	Supplier       *Supplier         `gorm:"foreignKey:SupplierId;references:Id"`
-	CreatedUser    *User             `gorm:"foreignKey:CreatedBy;references:Id"`
-	Nonstocks      []ExpenseNonstock `gorm:"foreignKey:ExpenseId;references:Id"`
-	LatestApproval *Approval         `gorm:"-" json:"latest_approval,omitempty"`
+	Supplier             *Supplier         `gorm:"foreignKey:SupplierId;references:Id"`
+	CreatedUser          *User             `gorm:"foreignKey:CreatedBy;references:Id"`
+	Nonstocks            []ExpenseNonstock `gorm:"foreignKey:ExpenseId;references:Id"`
+	Documents            []Document        `gorm:"foreignKey:DocumentableId;references:Id"`
+	RealizationDocuments []Document        `gorm:"foreignKey:DocumentableId;references:Id"`
+	LatestApproval       *Approval         `gorm:"-" json:"latest_approval,omitempty"`
 }