211 lines
6.9 KiB
Go
211 lines
6.9 KiB
Go
package contract
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import (
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"errors"
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"fmt"
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"log"
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"net/http"
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"time"
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"github.com/jinzhu/gorm"
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"github.com/lib/pq"
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"gitlab.com/pactual1/backend/database/device"
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"gitlab.com/pactual1/backend/models"
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"gitlab.com/pactual1/backend/shared"
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)
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func GetContracts(status []string, companyName string, companyAddress string,
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companyEmail string, companyPhone string, startTime *time.Time, endTime *time.Time,
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contractName string, deviceIDs []int64, contractIDs []int64, dateCreated *time.Time, limit, offset int) ([]models.Contract, int64, int, error) {
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var contracts []models.Contract
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db := shared.GetDb()
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countDb := db
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// Define custom fields to be selected, varies based on joined tables
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customFields := "distinct contracts.*, array_length(contracts.device_ids, 1) as number_of_devices"
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// Search by Statuses
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if len(status) > 0 {
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db = db.Where("contracts.status IN (?)", status)
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countDb = countDb.Where("contracts.status IN (?)", status)
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}
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// Search by IDs
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if len(contractIDs) > 0 {
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db = db.Where("contracts.id IN (?)", contractIDs)
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countDb = countDb.Where("contracts.id IN (?)", contractIDs)
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}
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// Search by Company Fields
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db = db.Joins("left join companies on companies.id = contracts.buyer_id")
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countDb = countDb.Joins("left join companies on companies.id = contracts.buyer_id")
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customFields += ", companies.name as buyer_name"
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if companyName != "" {
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db = db.Where("companies.name LIKE ?", "%"+companyName+"%")
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countDb = countDb.Where("companies.name LIKE ?", "%"+companyName+"%")
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}
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if companyAddress != "" {
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db = db.Where("companies.address LIKE ?", "%"+companyAddress+"%")
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countDb = countDb.Where("companies.address LIKE ?", "%"+companyAddress+"%")
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}
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if companyEmail != "" {
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db = db.Where("companies.email LIKE ?", "%"+companyEmail+"%")
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countDb = countDb.Where("companies.email LIKE ?", "%"+companyEmail+"%")
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}
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if companyPhone != "" {
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db = db.Where("companies.phone LIKE ?", "%"+companyPhone+"%")
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countDb = countDb.Where("companies.phone LIKE ?", "%"+companyPhone+"%")
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}
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// Search by Contract Name
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if contractName != "" {
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db = db.Where("contracts.name LIKE ?", "%"+contractName+"%")
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countDb = countDb.Where("contracts.name LIKE ?", "%"+contractName+"%")
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}
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// Search by Start Time and End Time
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if startTime != nil && !startTime.IsZero() {
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db = db.Where("start_time >= ?", startTime)
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countDb = countDb.Where("start_time >= ?", startTime)
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}
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if endTime != nil && !startTime.IsZero() {
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db = db.Where("end_time <= ?", endTime)
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countDb = countDb.Where("end_time <= ?", endTime)
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}
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if dateCreated != nil && !dateCreated.IsZero() {
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db = db.Where("contracts.created_at = ?", dateCreated)
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countDb = countDb.Where("contracts.created_at = ?", dateCreated)
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}
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// Search by Device IDs
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if len(deviceIDs) > 0 {
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db = db.Where("device_ids && ?", pq.Array(deviceIDs))
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countDb = countDb.Where("device_ids && ?", pq.Array(deviceIDs))
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}
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// Fetch total count of filtered records
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var total int64
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if err := countDb.Model(&models.Contract{}).Count(&total).Error; err != nil {
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log.Printf("GetContracts Error: Database error: %v", err)
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return contracts, total, http.StatusInternalServerError, err
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}
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// Fetch contracts with custom fields
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if err := db.Select(customFields).
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Order("created_at desc").
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Limit(limit).
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Offset(offset).
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Find(&contracts).Error; err != nil {
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if errors.Is(err, gorm.ErrRecordNotFound) {
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log.Printf("GetContracts Error: No contracts found: %v", err)
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return contracts, total, http.StatusNotFound, err
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} else {
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log.Printf("GetContracts Error: Database error: %v", err)
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return contracts, total, http.StatusInternalServerError, err
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}
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}
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return contracts, total, http.StatusOK, nil
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}
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func UpdateContract(contract models.Contract) (models.Contract, int, error) {
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var devices []models.Device
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var status int
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var err error
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if contract.DeviceIDs != nil {
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devices, status, err = device.GetDevicesByID(contract.DeviceIDs)
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if err != nil {
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return contract, status, err
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}
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status, err = validateContractDevices(contract.ID, devices)
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if err != nil {
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log.Printf("UpdateContract Error: Invalid Device ID: %v", err)
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return contract, status, err
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}
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}
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err = shared.GetDb().Transaction(func(tx *gorm.DB) error {
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// Update contract
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if err := tx.Model(contract).Updates(contract).Error; err != nil {
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log.Printf("UpdateContract Error: Could not update contract: %v", err)
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return err
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}
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if devices != nil {
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// Update devices
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if err := tx.Model(models.Device{}).Where("id IN (?)", contract.DeviceIDs).Updates(models.Device{CurrentContractID: &contract.ID}).Error; err != nil {
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log.Printf("UpdateContract Error: Could not update devices: %v", err)
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return err
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}
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}
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// return nil will commit the whole transaction
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return nil
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})
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if err != nil {
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log.Printf("UpdateContract Error: Could not update contract: %v", err)
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return contract, http.StatusInternalServerError, err
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}
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return GetContractByID(uint64(contract.ID))
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}
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func validateContractDevices(contractID uint, devices []models.Device) (int, error) {
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for _, device := range devices {
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if device.CurrentContractID != nil && *device.CurrentContractID != contractID {
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currentDeviceContract, status, err := GetContractByID(uint64(*device.CurrentContractID))
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if err != nil {
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return status, err
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}
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if currentDeviceContract.Status != models.ContractStatusExecuted &&
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currentDeviceContract.Status == models.ContractStatusRevoked {
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return http.StatusBadRequest, fmt.Errorf("device id %d is linked to contract id - %d name %s", device.ID, currentDeviceContract.ID, currentDeviceContract.Name)
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}
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}
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}
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return http.StatusOK, nil
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}
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func GetContractByID(contractID uint64) (models.Contract, int, error) {
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// Fetch the contract creation date based on contractID
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var contract models.Contract
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if err := shared.GetDb().Unscoped().Where("id = ?", contractID).First(&contract).Error; err != nil {
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log.Printf("GetContractByID Error: Could not fetch contract: %v", err)
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return contract, http.StatusInternalServerError, err
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}
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// Fetch the product
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var product models.ProductTemplate
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if err := shared.GetDb().Unscoped().Where("id = ?", contract.ProductID).First(&product).Error; err != nil {
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log.Printf("GetContractByID Error: Could not fetch product: %v", err)
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return contract, http.StatusInternalServerError, err
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}
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contract.ProductName = product.Name
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// Fetch the seller
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var seller models.Company
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if err := shared.GetDb().Unscoped().Where("id = ?", contract.SellerID).First(&seller).Error; err != nil {
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log.Printf("GetContractByID Error: Could not fetch seller: %v", err)
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return contract, http.StatusInternalServerError, err
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}
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contract.SellerName = seller.Name
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// Fetch the buyer
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var buyer models.Company
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if err := shared.GetDb().Unscoped().Where("id = ?", contract.BuyerID).First(&buyer).Error; err != nil {
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log.Printf("GetContractByID Error: Could not fetch buyer: %v", err)
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return contract, http.StatusInternalServerError, err
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}
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contract.BuyerName = buyer.Name
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return contract, http.StatusOK, nil
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}
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