361 lines
11 KiB
Go
361 lines
11 KiB
Go
package repository
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import (
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"database/sql"
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"errors"
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"fmt"
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"strings"
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"github.com/wmms/wmms/internal/model"
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"github.com/wmms/wmms/pkg/database"
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)
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// ErrDuplicateMaterialCode 表示同组织下物料编码已被占用。
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var ErrDuplicateMaterialCode = errors.New("物料编码已存在")
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// BeginTx starts a new database transaction
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func BeginTx() (*sql.Tx, error) {
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return database.DB.Begin()
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}
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// probeLimit 限制自动编码撞号后向后探测的次数：号段被大面积占用时宁可报错，
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// 也不要让一次创建长时间空转。
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const probeLimit = 1000
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type MaterialRepo struct{}
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func NewMaterialRepo() *MaterialRepo {
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return &MaterialRepo{}
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}
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func (r *MaterialRepo) IsActiveSubcategory(categoryID, organizationID int64) (bool, error) {
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query := `SELECT EXISTS(
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SELECT 1 FROM material_categories
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WHERE id = ? AND organization_id = ? AND parent_id IS NOT NULL AND status = 'active'
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)`
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var exists bool
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err := database.DB.QueryRow(query, categoryID, organizationID).Scan(&exists)
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return exists, err
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}
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// sqlExecer 让插入语句既能直接走连接池，也能跑在事务里。
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type sqlExecer interface {
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Exec(query string, args ...interface{}) (sql.Result, error)
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}
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// insertMaterial 写入物料并回填自增主键，唯一键冲突统一翻译成
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// ErrDuplicateMaterialCode。
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func insertMaterial(execer sqlExecer, m *model.Material) error {
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query := `INSERT INTO materials (organization_id, material_code, name, material_image, spec, manufacturer_model, category_id, base_unit_id, unit, status, version) VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)`
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result, err := execer.Exec(query, m.OrganizationID, m.MaterialCode, m.Name, m.MaterialImage, m.Spec,
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m.ManufacturerModel, m.CategoryID, m.BaseUnitID, m.Unit, m.Status, m.Version)
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if err != nil {
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if strings.Contains(err.Error(), "Duplicate entry") {
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return ErrDuplicateMaterialCode
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}
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return err
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}
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id, err := result.LastInsertId()
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if err != nil {
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return err
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}
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m.ID = id
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return nil
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}
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// lockCodeRule 锁住小类当前启用的编码规则行，返回 nil 表示该小类没有规则。
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// FOR UPDATE 让同一个小类的并发创建串行化，避免两条记录抢到同一个流水号。
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func lockCodeRule(tx *sql.Tx, organizationID, categoryID int64) (*model.CodeRule, error) {
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query := `SELECT id, organization_id, category_id, prefix, sequence_length, next_sequence FROM code_rules WHERE organization_id = ? AND category_id = ? AND status = 'active' FOR UPDATE`
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rule := &model.CodeRule{}
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err := tx.QueryRow(query, organizationID, categoryID).Scan(&rule.ID, &rule.OrganizationID,
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&rule.CategoryID, &rule.Prefix, &rule.SequenceLength, &rule.NextSequence)
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if err == sql.ErrNoRows {
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return nil, nil
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}
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if err != nil {
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return nil, err
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}
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return rule, nil
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}
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// isMaterialCodeTaken 判断同组织下某个物料编码是否已被占用。
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func isMaterialCodeTaken(tx *sql.Tx, organizationID int64, code string) (bool, error) {
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query := `SELECT EXISTS(SELECT 1 FROM materials WHERE organization_id = ? AND material_code = ?)`
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var exists bool
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err := tx.QueryRow(query, organizationID, code).Scan(&exists)
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return exists, err
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}
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// CreateWithCodeRule 在事务内插入物料，并根据提交的编码决定是否推进号段。
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//
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// 提交的编码是不是「规则当前的产物」决定了走哪条分支：相等说明这个编码来自自动
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// 生成、用户没有改过，于是沿着号段向后探测出第一个没被占用的流水号，插入成功后
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// 把 next_sequence 推进到它之后；不相等说明用户手改了编码、或者该小类根本没有
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// 规则，此时原样插入、号段保持不变，撞唯一键就报编码已存在。
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func (r *MaterialRepo) CreateWithCodeRule(m *model.Material, submittedCode string) error {
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tx, err := BeginTx()
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if err != nil {
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return err
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}
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defer func() { _ = tx.Rollback() }()
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var categoryID int64
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if m.CategoryID != nil {
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categoryID = *m.CategoryID
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}
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rule, err := lockCodeRule(tx, m.OrganizationID, categoryID)
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if err != nil {
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return err
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}
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code := submittedCode
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var nextSequence int64
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if rule != nil && code == rule.FormatCode(rule.NextSequence) {
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sequence := rule.NextSequence
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for probed := 0; probed < probeLimit; probed++ {
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code = rule.FormatCode(sequence)
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taken, err := isMaterialCodeTaken(tx, m.OrganizationID, code)
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if err != nil {
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return err
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}
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if !taken {
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nextSequence = sequence + 1
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break
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}
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sequence++
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}
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if nextSequence == 0 {
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return fmt.Errorf("编码规则 %s 的可用流水号已用尽", rule.Prefix)
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}
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}
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m.MaterialCode = code
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if err := insertMaterial(tx, m); err != nil {
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return err
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}
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if nextSequence > 0 {
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if _, err := tx.Exec(`UPDATE code_rules SET next_sequence = ? WHERE id = ?`, nextSequence, rule.ID); err != nil {
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return err
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}
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}
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if err := tx.Commit(); err != nil {
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return err
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}
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return r.GetByID(m.ID, m)
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}
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func (r *MaterialRepo) GetByID(id int64, m *model.Material) error {
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query := `SELECT id, organization_id, material_code, name, material_image, spec, manufacturer_model,
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category_id, base_unit_id, unit, status, version, created_at, updated_at
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FROM materials WHERE id = ?`
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var materialImage sql.NullString
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var manufacturerModel sql.NullString
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err := database.DB.QueryRow(query, id).Scan(&m.ID, &m.OrganizationID, &m.MaterialCode, &m.Name, &materialImage,
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&m.Spec, &manufacturerModel, &m.CategoryID, &m.BaseUnitID,
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&m.Unit, &m.Status, &m.Version, &m.CreatedAt, &m.UpdatedAt)
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if err != nil {
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return err
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}
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if materialImage.Valid {
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m.MaterialImage = &materialImage.String
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}
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if manufacturerModel.Valid {
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m.ManufacturerModel = &manufacturerModel.String
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}
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return nil
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}
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func (r *MaterialRepo) GetByMaterialCode(code string) (*model.Material, error) {
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m := &model.Material{}
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query := `SELECT id, organization_id, material_code, name, material_image, spec, manufacturer_model,
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category_id, base_unit_id, unit, status, version, created_at, updated_at
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FROM materials WHERE material_code = ?`
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var materialImage sql.NullString
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var manufacturerModel sql.NullString
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err := database.DB.QueryRow(query, code).Scan(&m.ID, &m.OrganizationID, &m.MaterialCode, &m.Name, &materialImage,
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&m.Spec, &manufacturerModel, &m.CategoryID, &m.BaseUnitID,
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&m.Unit, &m.Status, &m.Version, &m.CreatedAt, &m.UpdatedAt)
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if err != nil {
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return nil, err
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}
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if materialImage.Valid {
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m.MaterialImage = &materialImage.String
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}
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if manufacturerModel.Valid {
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m.ManufacturerModel = &manufacturerModel.String
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}
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return m, nil
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}
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func (r *MaterialRepo) List(search, status string, limit, offset int) ([]model.Material, int64, error) {
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countQuery := `SELECT COUNT(*) FROM materials WHERE 1=1`
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var countArgs []interface{}
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if status != "all" {
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countQuery += ` AND status = ?`
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countArgs = append(countArgs, status)
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}
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if search != "" {
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countQuery += ` AND (material_code LIKE ? OR name LIKE ?)`
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searchPattern := "%" + search + "%"
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countArgs = append(countArgs, searchPattern, searchPattern)
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}
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var total int64
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err := database.DB.QueryRow(countQuery, countArgs...).Scan(&total)
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if err != nil {
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return nil, 0, err
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}
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query := `SELECT id, organization_id, material_code, name, material_image, spec, manufacturer_model,
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category_id, base_unit_id, unit, status, version, created_at, updated_at
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FROM materials WHERE 1=1`
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var args []interface{}
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if status != "all" {
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query += ` AND status = ?`
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args = append(args, status)
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}
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if search != "" {
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query += ` AND (material_code LIKE ? OR name LIKE ?)`
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searchPattern := "%" + search + "%"
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args = append(args, searchPattern, searchPattern)
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}
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query += ` ORDER BY id DESC LIMIT ? OFFSET ?`
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args = append(args, limit, offset)
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rows, err := database.DB.Query(query, args...)
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if err != nil {
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return nil, 0, err
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}
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defer rows.Close()
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var materials []model.Material
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for rows.Next() {
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var m model.Material
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var materialImage sql.NullString
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var manufacturerModel sql.NullString
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err := rows.Scan(&m.ID, &m.OrganizationID, &m.MaterialCode, &m.Name, &materialImage, &m.Spec,
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&manufacturerModel, &m.CategoryID, &m.BaseUnitID,
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&m.Unit, &m.Status, &m.Version, &m.CreatedAt, &m.UpdatedAt)
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if err != nil {
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return nil, 0, err
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}
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if materialImage.Valid {
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m.MaterialImage = &materialImage.String
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}
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if manufacturerModel.Valid {
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m.ManufacturerModel = &manufacturerModel.String
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}
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materials = append(materials, m)
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}
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return materials, total, nil
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}
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func (r *MaterialRepo) Update(id int64, req *model.UpdateMaterialRequest) error {
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var sets []string
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var args []interface{}
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if req.Name != "" {
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sets = append(sets, "name = ?")
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args = append(args, req.Name)
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}
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if req.MaterialImage != nil && *req.MaterialImage != "" {
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sets = append(sets, "material_image = ?")
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args = append(args, *req.MaterialImage)
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}
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if req.Spec != "" {
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sets = append(sets, "spec = ?")
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args = append(args, req.Spec)
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}
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if req.ManufacturerModel != nil && *req.ManufacturerModel != "" {
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sets = append(sets, "manufacturer_model = ?")
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args = append(args, *req.ManufacturerModel)
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}
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if req.CategoryID != nil {
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sets = append(sets, "category_id = ?")
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args = append(args, req.CategoryID)
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}
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if req.Unit != "" {
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sets = append(sets, "unit = ?")
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args = append(args, req.Unit)
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}
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if req.BaseUnitID != nil {
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sets = append(sets, "base_unit_id = ?")
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args = append(args, req.BaseUnitID)
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}
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if req.Status != "" {
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sets = append(sets, "status = ?")
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args = append(args, req.Status)
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}
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sets = append(sets, "version = version + 1")
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if len(sets) == 0 {
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return nil
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}
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query := fmt.Sprintf("UPDATE materials SET %s WHERE id = ?", strings.Join(sets, ", "))
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args = append(args, id)
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_, err := database.DB.Exec(query, args...)
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return err
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}
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func (r *MaterialRepo) Delete(id int64) error {
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// Check if material has related records
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var count int
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// Check inbound_items
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database.DB.QueryRow(`SELECT COUNT(*) FROM inbound_items WHERE material_id = ?`, id).Scan(&count)
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if count > 0 {
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return fmt.Errorf("该物料有入库记录，无法删除")
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}
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// Check outbound_items
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database.DB.QueryRow(`SELECT COUNT(*) FROM outbound_items WHERE material_id = ?`, id).Scan(&count)
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if count > 0 {
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return fmt.Errorf("该物料有出库记录，无法删除")
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}
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// Check stock_logs
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database.DB.QueryRow(`SELECT COUNT(*) FROM stock_logs WHERE material_id = ?`, id).Scan(&count)
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if count > 0 {
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return fmt.Errorf("该物料有库存流水记录，无法删除")
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}
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_, err := database.DB.Exec(`DELETE FROM materials WHERE id = ?`, id)
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return err
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}
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func (r *MaterialRepo) Obsolete(id int64) error {
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var nonZero int
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if err := database.DB.QueryRow(`SELECT COUNT(*) FROM inventory_balances WHERE material_id = ? AND (on_hand <> 0 OR reserved <> 0 OR locked <> 0 OR in_transit <> 0)`, id).Scan(&nonZero); err != nil {
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return err
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}
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if nonZero > 0 {
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return fmt.Errorf("该物料仍有库存，无法作废")
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}
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result, err := database.DB.Exec(`UPDATE materials SET status = 'obsolete', version = version + 1 WHERE id = ?`, id)
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if err != nil {
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return err
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}
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// version always increments, so zero affected rows means the material does
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// not exist; re-obsoleting an already-obsolete material still reports 1.
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affected, _ := result.RowsAffected()
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if affected == 0 {
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return fmt.Errorf("物料不存在")
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}
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return nil
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}
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func (r *MaterialRepo) Restore(id int64) error {
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result, err := database.DB.Exec(`UPDATE materials SET status = 'active', version = version + 1 WHERE id = ?`, id)
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if err != nil {
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return err
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}
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affected, _ := result.RowsAffected()
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if affected == 0 {
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return fmt.Errorf("物料不存在")
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}
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return nil
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}
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