implement graphQL and init postgres

local/model/project.go

@@ -0,0 +1,148 @@
+package model
+
+import (
+	"errors"
+	"strings"
+
+	"gorm.io/gorm"
+)
+
+// Project represents a project in the system
+type Project struct {
+	BaseModel
+	Name        string `json:"name" gorm:"not null;type:varchar(255)"`
+	Description string `json:"description" gorm:"type:text"`
+	OwnerID     string `json:"owner_id" gorm:"not null;type:uuid;index;references:users(id)"`
+	TypeID      string `json:"type_id" gorm:"not null;type:uuid;index;references:types(id)"`
+	Owner       User   `json:"owner,omitempty" gorm:"foreignKey:OwnerID"`
+	Type        Type   `json:"type,omitempty" gorm:"foreignKey:TypeID"`
+	Tasks       []Task `json:"tasks,omitempty" gorm:"foreignKey:ProjectID"`
+	Members     []User `json:"members,omitempty" gorm:"many2many:project_members;"`
+}
+
+// ProjectCreateRequest represents the request to create a new project
+type ProjectCreateRequest struct {
+	Name        string `json:"name" validate:"required,min=1,max=255"`
+	Description string `json:"description" validate:"max=1000"`
+	OwnerID     string `json:"owner_id" validate:"required,uuid"`
+	TypeID      string `json:"type_id" validate:"required,uuid"`
+}
+
+// ProjectUpdateRequest represents the request to update a project
+type ProjectUpdateRequest struct {
+	Name        *string `json:"name,omitempty" validate:"omitempty,min=1,max=255"`
+	Description *string `json:"description,omitempty" validate:"omitempty,max=1000"`
+	TypeID      *string `json:"type_id,omitempty" validate:"omitempty,uuid"`
+}
+
+// ProjectInfo represents public project information
+type ProjectInfo struct {
+	ID          string   `json:"id"`
+	Name        string   `json:"name"`
+	Description string   `json:"description"`
+	OwnerID     string   `json:"owner_id"`
+	TypeID      string   `json:"type_id"`
+	Owner       UserInfo `json:"owner,omitempty"`
+	Type        TypeInfo `json:"type,omitempty"`
+	TaskCount   int64    `json:"task_count"`
+	MemberCount int64    `json:"member_count"`
+	CreatedAt   string   `json:"created_at"`
+	UpdatedAt   string   `json:"updated_at"`
+}
+
+// ProjectMember represents the many-to-many relationship between projects and users
+type ProjectMember struct {
+	ProjectID string  `json:"project_id" gorm:"type:uuid;primaryKey"`
+	UserID    string  `json:"user_id" gorm:"type:uuid;primaryKey"`
+	RoleID    string  `json:"role_id" gorm:"type:uuid;not null;references:roles(id)"`
+	Project   Project `json:"project,omitempty" gorm:"foreignKey:ProjectID"`
+	User      User    `json:"user,omitempty" gorm:"foreignKey:UserID"`
+	Role      Role    `json:"role,omitempty" gorm:"foreignKey:RoleID"`
+}
+
+// BeforeCreate is called before creating a project
+func (p *Project) BeforeCreate(tx *gorm.DB) error {
+	p.BaseModel.BeforeCreate()
+
+	// Normalize name and description
+	p.Name = strings.TrimSpace(p.Name)
+	p.Description = strings.TrimSpace(p.Description)
+
+	return p.Validate()
+}
+
+// BeforeUpdate is called before updating a project
+func (p *Project) BeforeUpdate(tx *gorm.DB) error {
+	p.BaseModel.BeforeUpdate()
+
+	// Normalize fields if they're being updated
+	if p.Name != "" {
+		p.Name = strings.TrimSpace(p.Name)
+	}
+	if p.Description != "" {
+		p.Description = strings.TrimSpace(p.Description)
+	}
+
+	return p.Validate()
+}
+
+// Validate validates project data
+func (p *Project) Validate() error {
+	if p.Name == "" {
+		return errors.New("name is required")
+	}
+
+	if len(p.Name) > 255 {
+		return errors.New("name must not exceed 255 characters")
+	}
+
+	if p.OwnerID == "" {
+		return errors.New("owner_id is required")
+	}
+
+	if p.TypeID == "" {
+		return errors.New("type_id is required")
+	}
+
+	return nil
+}
+
+// ToProjectInfo converts Project to ProjectInfo (public information)
+func (p *Project) ToProjectInfo() ProjectInfo {
+	projectInfo := ProjectInfo{
+		ID:          p.ID,
+		Name:        p.Name,
+		Description: p.Description,
+		OwnerID:     p.OwnerID,
+		TypeID:      p.TypeID,
+		CreatedAt:   p.CreatedAt.Format("2006-01-02T15:04:05Z07:00"),
+		UpdatedAt:   p.UpdatedAt.Format("2006-01-02T15:04:05Z07:00"),
+	}
+
+	// Add owner info if loaded
+	if p.Owner.ID != "" {
+		projectInfo.Owner = p.Owner.ToUserInfo()
+	}
+
+	// Add type info if loaded
+	if p.Type.ID != "" {
+		projectInfo.Type = p.Type.ToTypeInfo()
+	}
+
+	return projectInfo
+}
+
+// HasMember checks if a user is a member of the project
+func (p *Project) HasMember(userID string) bool {
+	for _, member := range p.Members {
+		if member.ID == userID {
+			return true
+		}
+	}
+	return false
+}
+
+// IsOwner checks if a user is the owner of the project
+func (p *Project) IsOwner(userID string) bool {
+	return p.OwnerID == userID
+}