revert 96bd22bcd1

revert update sslmole=disable

.env.example

@@ -1,10 +1,32 @@
-# pgx, postgresql, mysql 
-DRIVERNAME=pgx
-# enable / disable migrations
-MIGRATE=
-# as example
-DATASOURCE=postgresql://developer:secret@localhost:5432/db?sslmode=disable
-# hex string format
-ASYMMETRICKEY=
-# in minutes
-DURATION=
+ENV_DIRECTORY=
+ENV_MODE=
+
+LOG_LEVEL=
+
+APP_NAME=
+APP_VERSION=
+
+TIMEZONE=
+
+PASETO_ASYMMETRIC_KEY=
+PASETO_DURATION=
+
+SMTP_HOST=
+SMTP_PORT=
+SMTP_USER=
+SMTP_PASS=
+
+DATABASE_DRIVER_NAME=
+DATABASE_DATA_SOURCE=
+DATABASE_MIGRATE=
+
+# if you want override the datasource key, you can use this format _OVERRIDE_KEY
+# AUTH_DATA_SOURCE=something_data_source
+# example i: OVERRIDE_AUTH_DATA_SOURCE will get the value something_data_source
+# example ii:
+# app := app.New(app.Config{
+# 	Name:               appName,
+# 	Version:            version,
+# 	EnvDirectory:       envDirectory,
+# 	DatabaseDataSource: "OVERRIDE_AUTH_DATA_SOURCE",
+# })

LICENSE

@@ -1,6 +1,6 @@
 MIT License
 
-Copyright (c) 2024 Pedro Pérez Banda
+Copyright (c) 2025 Pedro Pérez Banda
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal

app/app.go

@@ -6,112 +6,359 @@ import (
 	"embed"
 	"errors"
 	"fmt"
-	"gopher-toolbox/utils"
+	"io"
 	"log/slog"
 	"os"
 	"strings"
 	"time"
 
 	"aidanwoods.dev/go-paseto"
+
 	"github.com/golang-migrate/migrate/v4"
 	_ "github.com/golang-migrate/migrate/v4/database/postgres"
 	"github.com/golang-migrate/migrate/v4/source/iofs"
 	_ "github.com/jackc/pgx/v5/stdlib"
 )
 
+// TODO: review consts
 const (
 	// Handlers keys
-	InvalidRequest  string = "invalid_request"
-	InternalError   string = "internal_error"
-	NotFound        string = "not_found"
-	Created         string = "created"
-	Updated         string = "updated"
-	Deleted         string = "deleted"
-	Enabled         string = "enabled"
-	Disabled        string = "disabled"
-	Retrieved       string = "retrieved"
-	ErrorCreating   string = "error_creating"
-	ErrorUpdating   string = "error_updating"
-	ErrorEnabling   string = "error_enabling"
-	ErrorDisabling  string = "error_disabling"
-	ErrorGetting    string = "error_getting"
-	ErrorGettingAll string = "error_getting_all"
-	InvalidEntityID string = "invalid_entity_id"
-	NotImplemented  string = "not_implemented"
+	InvalidRequest    = "invalid_request"
+	MalformedJSON     = "malformed_json"
+	TokenBlacklisted  = "token_blacklisted"
+	TokenInvalid      = "token_invalid"
+	ValidationFailed  = "validation_failed"
+	UntilBeforeTo     = "until_before_to"
+	InternalError     = "internal_error"
+	NotFound          = "not_found"
+	Created           = "created"
+	Updated           = "updated"
+	Deleted           = "deleted"
+	Enabled           = "enabled"
+	Disabled          = "disabled"
+	Retrieved         = "retrieved"
+	ErrorCreating     = "error_creating"
+	ErrorUpdating     = "error_updating"
+	ErrorEnabling     = "error_enabling"
+	ErrorDisabling    = "error_disabling"
+	ErrorGetting      = "error_getting"
+	ErrorGettingAll   = "error_getting_all"
+	ErrorMailing      = "error_mailing"
+	InvalidEntityID   = "invalid_entity_id"
+	NotImplemented    = "not_implemented"
+	NotPassValidation = "not_pass_validation"
+	NotEnoughBalance  = "not_enough_balance"
+	InvalidIdentifier = "invalid_identifier"
 
-	// User keys
-	UserUsernameKey       string = "user_username_key"
-	UserEmailKey          string = "user_email_key"
-	UsernameAlReadyExists string = "username_already_exists"
-	EmailAlreadyExists    string = "email_already_exists"
-	IncorrectPassword     string = "incorrect_password"
-	ErrorGeneratingToken  string = "error_generating_token"
-	LoggedIn              string = "logged_in"
+	// User keys (DB)
+	UserUsernameKey       = "username_key"
+	UserEmailKey          = "email_key"
+	UsernameAlreadyExists = "username_already_exists"
+	UserSessionKey        = "user_session_key"
+	EmailAlreadyExists    = "email_already_exists"
+	PhoneNumberKey        = "phone_number_key"
+	PhoneAlreadyExists    = "phone_already_exists"
+	NoRowsAffected        = "no rows in result set"
+
+	// Auth
+	TokenPayload         = "token_payload"
+	LoggedIn             = "logged_in"
+	IncorrectPassword    = "incorrect_password"
+	ErrorGeneratingToken = "error_generating_token"
 )
 
-type App struct {
-	Database AppDatabase
-	Security AppSecurity
-	AppInfo  AppInfo
-}
+var (
+	logFile  *os.File
+	logLevel string
+)
 
-type AppDatabase struct {
-	DriverName string
-	DataSource string
-	Migrate    bool
-}
+type Environment string
 
-type AppInfo struct {
+const (
+	EnvironmentTesting     Environment = "testing"
+	EnvironmentDevelopment Environment = "development"
+	EnvironmentProduction  Environment = "production"
+)
+
+type LogLevel slog.Level
+
+type Config struct {
+	// default ""
+	Name string
+
+	// default ""
 	Version string
+
+	// default ".env"
+	EnvDirectory string
+
+	// default "development"
+	EnvMode Environment
+
+	// default "debug"
+	LogLevel slog.Level
+
+	// default "UTC"
+	Timezone string
+
+	// default nil
+	Paseto *Paseto
+
+	// default ""
+	SMTPHost string
+
+	// default ""
+	SMTPPort string
+
+	// default ""
+	SMTPUser string
+
+	// default ""
+	SMTPPass string
+
+	// default ""
+	DatabaseDriverName string
+
+	// default ""
+	DatabaseDataSource string
+
+	// default false
+	DatabaseMigrate bool
 }
 
-type AppSecurity struct {
+type App struct {
+	config Config
+}
+
+type Paseto struct {
 	AsymmetricKey paseto.V4AsymmetricSecretKey
 	PublicKey     paseto.V4AsymmetricPublicKey
 	Duration      time.Duration
 }
 
-func New(version string) *App {
+func New(config ...Config) *App {
+	cfg := Config{
+		Name:               "",
+		Version:            "",
+		EnvDirectory:       ".env",
+		EnvMode:            EnvironmentDevelopment,
+		LogLevel:           slog.LevelDebug,
+		Timezone:           "UTC",
+		Paseto:             nil,
+		SMTPHost:           "",
+		SMTPPort:           "",
+		SMTPUser:           "",
+		SMTPPass:           "",
+		DatabaseDriverName: "pgx",
+		DatabaseDataSource: "",
+		DatabaseMigrate:    false,
+	}
+
+	if len(config) > 0 {
+		cfg = config[0]
+
+		if cfg.EnvDirectory == "" {
+			cfg.EnvDirectory = ".env"
+		}
+		if cfg.EnvMode == EnvironmentTesting {
+			cfg.EnvDirectory = "./../../.env"
+		}
+		if cfg.LogLevel == slog.LevelDebug {
+			cfg.LogLevel = slog.LevelDebug
+		}
+		if cfg.Timezone == "" {
+			cfg.Timezone = "UTC"
+		}
+		if cfg.DatabaseDriverName == "" {
+			cfg.DatabaseDriverName = "pgx"
+		}
+	}
+
+	envDir := os.Getenv("ENV_DIRECTORY")
+	if envDir == "" {
+		envDir = cfg.EnvDirectory
+	}
+
+	err := loadEnvFile(envDir)
+	if err != nil {
+		slog.Error("error loading env file", "error", err, "directory", envDir)
+	}
+
+	if cfg.Name == "" && os.Getenv("APP_NAME") != "" {
+		cfg.Name = os.Getenv("APP_NAME")
+	}
+
+	if cfg.Version == "" && os.Getenv("APP_VERSION") != "" {
+		cfg.Version = os.Getenv("APP_VERSION")
+	}
+
+	if cfg.EnvMode == "" && os.Getenv("ENV_MODE") != "" {
+		cfg.EnvMode = Environment(os.Getenv("ENV_MODE"))
+	}
+
+	if os.Getenv("LOG_LEVEL") != "" {
+		logLevel = os.Getenv("LOG_LEVEL")
+		switch logLevel {
+		case "debug":
+			cfg.LogLevel = slog.LevelDebug
+		case "info":
+			cfg.LogLevel = slog.LevelInfo
+		case "warn":
+			cfg.LogLevel = slog.LevelWarn
+		case "error":
+			cfg.LogLevel = slog.LevelError
+		default:
+			cfg.LogLevel = slog.LevelInfo
+		}
+	}
+
+	if cfg.Timezone == "" && os.Getenv("TIMEZONE") != "" {
+		cfg.Timezone = os.Getenv("TIMEZONE")
+	}
+
+	loc, err := time.LoadLocation(cfg.Timezone)
+	if err != nil {
+		slog.Error("error loading timezone", "error", err, "timezone", cfg.Timezone)
+		loc = time.UTC
+	}
+	time.Local = loc
+
+	startRotativeLogger(cfg.LogLevel)
+
+	if cfg.Paseto == nil {
+		var ak paseto.V4AsymmetricSecretKey
 		var err error
 
-	err = loadEnvFile()
-	if err != nil {
-		slog.Error("error loading env file", "error", err)
-		panic(err)
-	}
-
-	var durationTime time.Duration
-	var ak paseto.V4AsymmetricSecretKey
-
-	ak, err = paseto.NewV4AsymmetricSecretKeyFromHex(os.Getenv("ASYMMETRICKEY"))
+		if os.Getenv("PASETO_ASYMMETRIC_KEY") != "" {
+			slog.Info("using paseto asymmetric key from env")
+			ak, err = paseto.NewV4AsymmetricSecretKeyFromHex(os.Getenv("PASETO_ASYMMETRIC_KEY"))
 			if err != nil {
+				slog.Error("error creating asymmetric key", "error", err)
 				ak = paseto.NewV4AsymmetricSecretKey()
 			}
+		} else {
+			ak = paseto.NewV4AsymmetricSecretKey()
+		}
+
 		pk := ak.Public()
 
-	duration := os.Getenv("DURATION")
-	if duration != "" {
-		durationTime, err = time.ParseDuration(duration)
+		duration := time.Hour * 24 * 7 // 7 days by default
+		if os.Getenv("PASETO_DURATION") != "" {
+			durationStr := os.Getenv("PASETO_DURATION")
+			durationInt, err := time.ParseDuration(durationStr)
 			if err != nil {
-			durationTime = time.Hour * 24 * 7
+				slog.Error("error parsing PASETO_DURATION", "error", err, "duration", durationStr)
+			} else {
+				duration = durationInt
 			}
 		}
 
-	return &App{
-		Database: AppDatabase{
-			Migrate:    utils.GetBool(os.Getenv("MIGRATE")),
-			DriverName: os.Getenv("DRIVERNAME"),
-			DataSource: os.Getenv("DATASOURCE"),
-		},
-		Security: AppSecurity{
+		cfg.Paseto = &Paseto{
 			AsymmetricKey: ak,
 			PublicKey:     pk,
-			Duration:      durationTime,
-		},
-		AppInfo: AppInfo{
-			Version: version,
-		},
+			Duration:      duration,
 		}
+	}
+
+	if cfg.SMTPHost == "" && os.Getenv("SMTP_HOST") != "" {
+		cfg.SMTPHost = os.Getenv("SMTP_HOST")
+	}
+
+	if cfg.SMTPPort == "" && os.Getenv("SMTP_PORT") != "" {
+		cfg.SMTPPort = os.Getenv("SMTP_PORT")
+	}
+
+	if cfg.SMTPUser == "" && os.Getenv("SMTP_USER") != "" {
+		cfg.SMTPUser = os.Getenv("SMTP_USER")
+	}
+
+	if cfg.SMTPPass == "" && os.Getenv("SMTP_PASS") != "" {
+		cfg.SMTPPass = os.Getenv("SMTP_PASS")
+	}
+
+	if cfg.DatabaseDriverName == "" && os.Getenv("DATABASE_DRIVER_NAME") != "" {
+		cfg.DatabaseDriverName = os.Getenv("DATABASE_DRIVER_NAME")
+	}
+
+	if strings.HasPrefix(cfg.DatabaseDataSource, "OVERRIDE_") {
+		envKey := strings.TrimPrefix(cfg.DatabaseDataSource, "OVERRIDE_")
+		if envValue := os.Getenv(envKey); envValue != "" {
+			slog.Info("using override database data source", "key", envKey)
+			cfg.DatabaseDataSource = envValue
+		} else {
+			slog.Warn("override database data source key not found in environment", "key", envKey)
+			if os.Getenv("DATABASE_DATA_SOURCE") != "" {
+				cfg.DatabaseDataSource = os.Getenv("DATABASE_DATA_SOURCE")
+			}
+		}
+	} else if cfg.DatabaseDataSource == "" && os.Getenv("DATABASE_DATA_SOURCE") != "" {
+		cfg.DatabaseDataSource = os.Getenv("DATABASE_DATA_SOURCE")
+	}
+
+	if !cfg.DatabaseMigrate && os.Getenv("DATABASE_MIGRATE") == "true" {
+		cfg.DatabaseMigrate = true
+	}
+
+	app := &App{
+		config: cfg,
+	}
+
+	slog.Info(
+		"app config",
+		"name", cfg.Name,
+		"version", cfg.Version,
+		"env_directory", cfg.EnvDirectory,
+		"env_mode", cfg.EnvMode,
+		"log_level", cfg.LogLevel,
+		"timezone", cfg.Timezone,
+		"paseto_public_key", cfg.Paseto.PublicKey.ExportHex(),
+		"paseto_duration", cfg.Paseto.Duration.String(),
+		"smtp_host", cfg.SMTPHost,
+		"smtp_port", cfg.SMTPPort,
+		"smtp_user", cfg.SMTPUser,
+		"smtp_pass", cfg.SMTPPass,
+		"database_driver", cfg.DatabaseDriverName,
+		"database_source", cfg.DatabaseDataSource,
+		"database_migrate", cfg.DatabaseMigrate,
+	)
+
+	return app
+}
+
+func (a *App) Name() string {
+	return a.config.Name
+}
+
+func (a *App) Version() string {
+	return a.config.Version
+}
+
+func (a *App) EnvDirectory() string {
+	return a.config.EnvDirectory
+}
+
+func (a *App) EnvMode() Environment {
+	return a.config.EnvMode
+}
+
+func (a *App) LogLevel() slog.Level {
+	return a.config.LogLevel
+}
+
+func (a *App) Paseto() *Paseto {
+	return a.config.Paseto
+}
+
+func (a *App) SMTPConfig() (host, port, user, pass string) {
+	return a.config.SMTPHost, a.config.SMTPPort, a.config.SMTPUser, a.config.SMTPPass
+}
+
+func (a *App) DatabaseDataSource() string {
+	return a.config.DatabaseDataSource
+}
+
+func (a *App) Timezone() string {
+	return a.config.Timezone
 }
 
 // MigrateDB migrates the database. The migrations must stored in the
@@ -121,11 +368,11 @@ func New(version string) *App {
 //
 // cmd/database/migrations/*.sql
 func (a *App) Migrate(database embed.FS) {
-	if a.Database.Migrate == false {
+	if !a.config.DatabaseMigrate {
 		slog.Info("migration disabled")
 		return
 	}
-	dbConn, err := sql.Open(a.Database.DriverName, a.Database.DataSource)
+	dbConn, err := sql.Open(a.config.DatabaseDriverName, a.config.DatabaseDataSource)
 	if err != nil {
 		fmt.Println(err)
 		return
@@ -138,7 +385,7 @@ func (a *App) Migrate(database embed.FS) {
 		return
 	}
 
-	m, err := migrate.NewWithSourceInstance("iofs", d, a.Database.DataSource)
+	m, err := migrate.NewWithSourceInstance("iofs", d, a.config.DatabaseDataSource)
 	if err != nil {
 		fmt.Println(err)
 		return
@@ -157,8 +404,12 @@ func (a *App) Migrate(database embed.FS) {
 	slog.Info("migration done")
 }
 
-func loadEnvFile() error {
-	file, err := os.Open(".env")
+func (a *App) Something() {
+	slog.Info("something")
+}
+
+func loadEnvFile(envDirectory string) error {
+	file, err := os.Open(envDirectory)
 	if err != nil {
 		return err
 	}
@@ -180,3 +431,41 @@ func loadEnvFile() error {
 	}
 	return scanner.Err()
 }
+
+func newLogger(level slog.Level) {
+	if err := os.MkdirAll("logs", 0755); err != nil {
+		fmt.Println("error creating logs directory:", err)
+		return
+	}
+
+	now := time.Now().Format("2006-01-02")
+	f, err := os.OpenFile(fmt.Sprintf("logs/log%s.log", now), os.O_RDWR|os.O_CREATE|os.O_APPEND, 0666)
+	if err != nil {
+		fmt.Println("error opening log file:", err)
+		return
+	}
+
+	mw := io.MultiWriter(os.Stdout, f)
+	logger := slog.New(slog.NewTextHandler(mw, &slog.HandlerOptions{
+		AddSource: true,
+		Level:     level,
+	}))
+
+	if logFile != nil {
+		logFile.Close() // Cierra el archivo anterior antes de rotar
+	}
+
+	logFile = f
+	slog.SetDefault(logger)
+}
+
+func startRotativeLogger(level slog.Level) {
+	newLogger(level)
+
+	ticker := time.NewTicker(time.Hour * 24)
+	go func() {
+		for range ticker.C {
+			newLogger(level)
+		}
+	}()
+}

db/pgx.go

@@ -2,11 +2,12 @@ package db
 
 import (
 	"context"
+	"log/slog"
+
 	_ "github.com/jackc/pgconn"
 	_ "github.com/jackc/pgx/v5"
 	"github.com/jackc/pgx/v5/pgxpool"
 	_ "github.com/jackc/pgx/v5/stdlib"
-	"log/slog"
 )
 
 func NewPGXPool(dataSource string) *pgxpool.Pool {

esfaker/esfaker.go

@@ -1,116 +0,0 @@
-package esfaker
-
-import (
-	"math/rand"
-	"strings"
-)
-
-const uppercaseAlphabet = "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
-const lowercaseAlphabet = "abcdefghijklmnopqrstuvwxyz"
-const numbers = "0123456789"
-const symbols = "!@#$%^&*()_+{}|:<>?~"
-
-var maleNames = []string{
-	"Pedro", "Juan", "Pepe", "Francisco", "Luis", "Carlos", "Javier", "José", "Antonio", "Manuel",
-}
-var femaleNames = []string{
-	"María", "Ana", "Isabel", "Laura", "Carmen", "Rosa", "Julia", "Elena", "Sara", "Lucía",
-}
-var lastNames = []string{
-	"García", "Fernández", "González", "Rodríguez", "López", "Martínez", "Sánchez", "Pérez", "Gómez", "Martín",
-}
-
-func MaleName() string {
-	return maleNames[rand.Intn(len(maleNames))]
-}
-
-func FemaleName() string {
-	return femaleNames[rand.Intn(len(femaleNames))]
-}
-
-func Name() string {
-	allNames := append(maleNames, femaleNames...)
-	return allNames[rand.Intn(len(allNames))]
-}
-
-func LastName() string {
-	return lastNames[rand.Intn(len(lastNames))]
-}
-
-func Email(beforeAt string) string {
-	return beforeAt + "@" + Chars(5, 10) + ".local"
-}
-
-func Int(min, max int64) int64 {
-	return min + rand.Int63n(max-min+1)
-}
-
-func Float(min, max float64) float64 {
-	return min + rand.Float64()*(max-min)
-}
-
-func Bool() bool {
-	return rand.Intn(2) == 0
-}
-
-func Chars(min, max int) string {
-	var sb strings.Builder
-	k := len(lowercaseAlphabet)
-
-	for i := 0; i < rand.Intn(max-min+1)+min; i++ {
-		c := lowercaseAlphabet[rand.Intn(k)]
-		sb.WriteByte(c)
-	}
-
-	return sb.String()
-}
-
-func AllChars(min, max int) string {
-	allChars := uppercaseAlphabet + lowercaseAlphabet + numbers + symbols
-	var sb strings.Builder
-	k := len(allChars)
-
-	for i := 0; i < rand.Intn(max-min+1)+min; i++ {
-		c := allChars[rand.Intn(k)]
-		sb.WriteByte(c)
-	}
-
-	return sb.String()
-}
-
-func AllCharsOrEmpty(min, max int) string {
-	if Bool() {
-		return ""
-	}
-	return AllChars(min, max)
-}
-
-func AllCharsOrNil(min, max int) *string {
-	if Bool() {
-		return nil
-	}
-	s := AllChars(min, max)
-	return &s
-}
-
-func NumericString(length int) string {
-	var sb strings.Builder
-
-	for i := 0; i < length; i++ {
-		sb.WriteByte(numbers[rand.Intn(len(numbers))])
-	}
-
-	return sb.String()
-}
-
-func Sentence(min, max int) string {
-	var sb strings.Builder
-	k := len(lowercaseAlphabet)
-
-	for i := 0; i < rand.Intn(max-min+1)+min; i++ {
-		c := lowercaseAlphabet[rand.Intn(k)]
-		sb.WriteByte(c)
-	}
-
-	return sb.String()
-}

go.mod

@@ -7,15 +7,19 @@ require (
 	github.com/golang-migrate/migrate/v4 v4.18.1
 	github.com/jackc/pgconn v1.14.3
 	github.com/jackc/pgx/v5 v5.7.1
+	github.com/stretchr/testify v1.9.0
 	github.com/xuri/excelize/v2 v2.9.0
 )
 
 require (
 	aidanwoods.dev/go-result v0.1.0 // indirect
+	github.com/davecgh/go-spew v1.1.1 // indirect
 	github.com/hashicorp/errwrap v1.1.0 // indirect
 	github.com/hashicorp/go-multierror v1.1.1 // indirect
 	github.com/lib/pq v1.10.9 // indirect
+	github.com/pmezard/go-difflib v1.0.0 // indirect
 	go.uber.org/atomic v1.7.0 // indirect
+	gopkg.in/yaml.v3 v3.0.1 // indirect
 )
 
 require (
@@ -34,6 +38,6 @@ require (
 	golang.org/x/crypto v0.28.0 // indirect
 	golang.org/x/net v0.30.0 // indirect
 	golang.org/x/sync v0.8.0 // indirect
-	golang.org/x/sys v0.26.0 // indirect
+	golang.org/x/sys v0.28.0 // indirect
 	golang.org/x/text v0.19.0
 )

go.sum

@@ -55,6 +55,10 @@ github.com/jackc/pgx/v5 v5.7.1 h1:x7SYsPBYDkHDksogeSmZZ5xzThcTgRz++I5E+ePFUcs=
 github.com/jackc/pgx/v5 v5.7.1/go.mod h1:e7O26IywZZ+naJtWWos6i6fvWK+29etgITqrqHLfoZA=
 github.com/jackc/puddle/v2 v2.2.2 h1:PR8nw+E/1w0GLuRFSmiioY6UooMp6KJv0/61nB7icHo=
 github.com/jackc/puddle/v2 v2.2.2/go.mod h1:vriiEXHvEE654aYKXXjOvZM39qJ0q+azkZFrfEOc3H4=
+github.com/kr/pretty v0.3.0 h1:WgNl7dwNpEZ6jJ9k1snq4pZsg7DOEN8hP9Xw0Tsjwk0=
+github.com/kr/pretty v0.3.0/go.mod h1:640gp4NfQd8pI5XOwp5fnNeVWj67G7CFk/SaSQn7NBk=
+github.com/kr/text v0.2.0 h1:5Nx0Ya0ZqY2ygV366QzturHI13Jq95ApcVaJBhpS+AY=
+github.com/kr/text v0.2.0/go.mod h1:eLer722TekiGuMkidMxC/pM04lWEeraHUUmBw8l2grE=
 github.com/lib/pq v1.10.9 h1:YXG7RB+JIjhP29X+OtkiDnYaXQwpS4JEWq7dtCCRUEw=
 github.com/lib/pq v1.10.9/go.mod h1:AlVN5x4E4T544tWzH6hKfbfQvm3HdbOxrmggDNAPY9o=
 github.com/moby/docker-image-spec v1.3.1 h1:jMKff3w6PgbfSa69GfNg+zN/XLhfXJGnEx3Nl2EsFP0=
@@ -78,6 +82,8 @@ github.com/richardlehane/mscfb v1.0.4/go.mod h1:YzVpcZg9czvAuhk9T+a3avCpcFPMUWm7
 github.com/richardlehane/msoleps v1.0.1/go.mod h1:BWev5JBpU9Ko2WAgmZEuiz4/u3ZYTKbjLycmwiWUfWg=
 github.com/richardlehane/msoleps v1.0.4 h1:WuESlvhX3gH2IHcd8UqyCuFY5yiq/GR/yqaSM/9/g00=
 github.com/richardlehane/msoleps v1.0.4/go.mod h1:BWev5JBpU9Ko2WAgmZEuiz4/u3ZYTKbjLycmwiWUfWg=
+github.com/rogpeppe/go-internal v1.12.0 h1:exVL4IDcn6na9z1rAb56Vxr+CgyK3nn3O+epU5NdKM8=
+github.com/rogpeppe/go-internal v1.12.0/go.mod h1:E+RYuTGaKKdloAfM02xzb0FW3Paa99yedzYV+kq4uf4=
 github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
 github.com/stretchr/testify v1.3.0/go.mod h1:M5WIy9Dh21IEIfnGCwXGc5bZfKNJtfHm1UVUgZn+9EI=
 github.com/stretchr/testify v1.4.0/go.mod h1:j7eGeouHqKxXV5pUuKE4zz7dFj8WfuZ+81PSLYec5m4=
@@ -108,11 +114,13 @@ golang.org/x/net v0.30.0 h1:AcW1SDZMkb8IpzCdQUaIq2sP4sZ4zw+55h6ynffypl4=
 golang.org/x/net v0.30.0/go.mod h1:2wGyMJ5iFasEhkwi13ChkO/t1ECNC4X4eBKkVFyYFlU=
 golang.org/x/sync v0.8.0 h1:3NFvSEYkUoMifnESzZl15y791HH1qU2xm6eCJU5ZPXQ=
 golang.org/x/sync v0.8.0/go.mod h1:Czt+wKu1gCyEFDUtn0jG5QVvpJ6rzVqr5aXyt9drQfk=
-golang.org/x/sys v0.26.0 h1:KHjCJyddX0LoSTb3J+vWpupP9p0oznkqVk/IfjymZbo=
-golang.org/x/sys v0.26.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
+golang.org/x/sys v0.28.0 h1:Fksou7UEQUWlKvIdsqzJmUmCX3cZuD2+P3XyyzwMhlA=
+golang.org/x/sys v0.28.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
 golang.org/x/text v0.19.0 h1:kTxAhCbGbxhK0IwgSKiMO5awPoDQ0RpfiVYBfK860YM=
 golang.org/x/text v0.19.0/go.mod h1:BuEKDfySbSR4drPmRPG/7iBdf8hvFMuRexcpahXilzY=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
+gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c h1:Hei/4ADfdWqJk1ZMxUNpqntNwaWcugrBjAiHlqqRiVk=
+gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c/go.mod h1:JHkPIbrfpd72SG/EVd6muEfDQjcINNoR0C8j2r3qZ4Q=
 gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
 gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=

mail/mail.go

@@ -0,0 +1,55 @@
+package mail
+
+import (
+	"bytes"
+	"fmt"
+	"net/smtp"
+	"os"
+	"text/template"
+)
+
+type Mailer struct {
+	smtpHost string
+	smtpPort string
+	smtpUser string
+	smtpPass string
+}
+
+func New() Mailer {
+	return Mailer{
+		smtpHost: os.Getenv("SMTP_HOST"),
+		smtpPort: os.Getenv("SMTP_PORT"),
+		smtpUser: os.Getenv("SMTP_USER"),
+		smtpPass: os.Getenv("SMTP_PASS"),
+	}
+}
+
+func (m *Mailer) SendMail(to []string, templateName string, data interface{}) error {
+	templateContent := getTemplate(templateName)
+	if templateContent == "" {
+		return fmt.Errorf("template %s not found", templateName)
+	}
+
+	tmpl, err := template.New("email").Parse(templateContent)
+	if err != nil {
+		return err
+	}
+
+	buf := new(bytes.Buffer)
+	if err := tmpl.Execute(buf, data); err != nil {
+		return err
+	}
+
+	auth := smtp.PlainAuth(m.smtpUser, m.smtpUser, m.smtpPass, m.smtpHost)
+	return smtp.SendMail(m.smtpHost+":"+m.smtpPort, auth, m.smtpUser, to, buf.Bytes())
+}
+
+func getTemplate(templateName string) string {
+	templatePath := "templates/mail/" + templateName + ".gotmpl"
+	content, err := os.ReadFile(templatePath)
+	if err != nil {
+		fmt.Printf("Error leyendo plantilla: %v\n", err)
+		return ""
+	}
+	return string(content)
+}

pgutils/pgutils.go

@@ -2,19 +2,21 @@ package pgutils
 
 import (
 	"log/slog"
+	"math"
+	"math/big"
 	"strconv"
 
 	"github.com/jackc/pgx/v5/pgtype"
 )
 
 func NumericToFloat64(n pgtype.Numeric) float64 {
-	value, err := n.Value()
+	val, err := n.Value()
 	if err != nil {
 		slog.Error("error getting numeric value", "error", err)
 		return 0
 	}
 
-	strValue, ok := value.(string)
+	strValue, ok := val.(string)
 	if !ok {
 		slog.Error("error converting numeric value to string")
 		return 0
@@ -29,10 +31,70 @@ func NumericToFloat64(n pgtype.Numeric) float64 {
 	return floatValue
 }
 
-func FloatToNumeric(number float64) (value pgtype.Numeric) {
-	parse := strconv.FormatFloat(number, 'f', -1, 64)
+func NumericToInt64(n pgtype.Numeric) int64 {
+	return n.Int.Int64() * int64(math.Pow(10, float64(n.Exp)))
+}
+
+func FloatToNumeric(number float64, precision int) (value pgtype.Numeric) {
+	parse := strconv.FormatFloat(number, 'f', precision, 64)
+	slog.Info("parse", "parse", parse)
+
 	if err := value.Scan(parse); err != nil {
-		slog.Error("error scanning float to numeric", "error", err)
+		slog.Error("error scanning numeric", "error", err)
 	}
 	return value
 }
+
+func AddNumeric(a, b pgtype.Numeric) pgtype.Numeric {
+	minExp := a.Exp
+	if b.Exp < minExp {
+		minExp = b.Exp
+	}
+
+	aInt := new(big.Int).Set(a.Int)
+	bInt := new(big.Int).Set(b.Int)
+
+	for a.Exp > minExp {
+		aInt.Mul(aInt, big.NewInt(10))
+		a.Exp--
+	}
+	for b.Exp > minExp {
+		bInt.Mul(bInt, big.NewInt(10))
+		b.Exp--
+	}
+
+	resultado := new(big.Int).Add(aInt, bInt)
+
+	return pgtype.Numeric{
+		Int:   resultado,
+		Exp:   minExp,
+		Valid: true,
+	}
+}
+
+func SubtractNumeric(a, b pgtype.Numeric) pgtype.Numeric {
+	minExp := a.Exp
+	if b.Exp < minExp {
+		minExp = b.Exp
+	}
+
+	aInt := new(big.Int).Set(a.Int)
+	bInt := new(big.Int).Set(b.Int)
+
+	for a.Exp > minExp {
+		aInt.Mul(aInt, big.NewInt(10))
+		a.Exp--
+	}
+	for b.Exp > minExp {
+		bInt.Mul(bInt, big.NewInt(10))
+		b.Exp--
+	}
+
+	resultado := new(big.Int).Sub(aInt, bInt)
+
+	return pgtype.Numeric{
+		Int:   resultado,
+		Exp:   minExp,
+		Valid: true,
+	}
+}

pgutils/pgutils_test.go

@@ -0,0 +1,78 @@
+package pgutils
+
+import (
+	"fmt"
+	"log/slog"
+	"math/big"
+	"testing"
+
+	"github.com/jackc/pgx/v5/pgtype"
+	"github.com/stretchr/testify/assert"
+)
+
+func Test_NumericToFloat(t *testing.T) {
+	tests := []struct {
+		given    pgtype.Numeric
+		expected float64
+	}{
+		{given: pgtype.Numeric{Int: big.NewInt(0), Exp: 0, Valid: true}, expected: 0},
+		{given: pgtype.Numeric{Int: big.NewInt(5), Exp: 0, Valid: true}, expected: 5},
+		{given: pgtype.Numeric{Int: big.NewInt(10), Exp: 0, Valid: true}, expected: 10},
+		{given: pgtype.Numeric{Int: big.NewInt(1000), Exp: -2, Valid: true}, expected: 10.00},
+		{given: pgtype.Numeric{Int: big.NewInt(1000), Exp: -3, Valid: true}, expected: 1.000},
+		{given: pgtype.Numeric{Int: big.NewInt(1000), Exp: -4, Valid: true}, expected: 0.1000},
+		{given: pgtype.Numeric{Int: big.NewInt(2555), Exp: -2, Valid: true}, expected: 25.55},
+		{given: pgtype.Numeric{Int: big.NewInt(-1), Exp: -2, Valid: true}, expected: -0.01},
+	}
+	for _, test := range tests {
+		t.Run(fmt.Sprintf("given %v, expected %v", test.given, test.expected), func(t *testing.T) {
+			actual := NumericToFloat64(test.given)
+			assert.Equal(t, test.expected, actual)
+		})
+	}
+
+}
+
+func Test_FloatToNumeric(t *testing.T) {
+	tests := []struct {
+		given     float64
+		expected  pgtype.Numeric
+		precision int
+	}{
+		{given: 0.0, expected: pgtype.Numeric{Int: big.NewInt(0), Exp: 0, Valid: true}, precision: 0},
+		{given: 25.50, expected: pgtype.Numeric{Int: big.NewInt(2550), Exp: -2, Valid: true}, precision: 2},
+		{given: 100.0, expected: pgtype.Numeric{Int: big.NewInt(1), Exp: 2, Valid: true}, precision: 0},
+		{given: 0.0001, expected: pgtype.Numeric{Int: big.NewInt(0), Exp: -2, Valid: true}, precision: 2},
+		{given: 0.0001, expected: pgtype.Numeric{Int: big.NewInt(1), Exp: -4, Valid: true}, precision: 4},
+	}
+
+	for _, test := range tests {
+		t.Run(fmt.Sprintf("given %v, expected %v", test.given, test.expected), func(t *testing.T) {
+			actual := FloatToNumeric(test.given, test.precision)
+			assert.Equal(t, test.expected, actual)
+		})
+	}
+}
+
+func Test_AddNumeric(t *testing.T) {
+	valueA := pgtype.Numeric{Int: big.NewInt(1), Exp: -3, Valid: true}
+	valueB := pgtype.Numeric{Int: big.NewInt(2), Exp: -2, Valid: true}
+
+	slog.Info("valueA", "valueA", valueA)
+	slog.Info("valueB", "valueB", valueB)
+
+	actual := AddNumeric(valueA, valueB)
+
+	slog.Info("actual", "actual", actual)
+	assert.Equal(t, pgtype.Numeric{Int: big.NewInt(21), Exp: -3, Valid: true}, actual)
+}
+
+func Test_SubtractNumeric(t *testing.T) {
+	valueA := pgtype.Numeric{Int: big.NewInt(1), Exp: -3, Valid: true}
+	valueB := pgtype.Numeric{Int: big.NewInt(2), Exp: -2, Valid: true}
+
+	actual := SubtractNumeric(valueA, valueB)
+
+	slog.Info("actual", "actual", actual)
+	assert.Equal(t, pgtype.Numeric{Int: big.NewInt(-19), Exp: -3, Valid: true}, actual)
+}

templates/functions.go

@@ -0,0 +1,34 @@
+package templates
+
+import (
+	"errors"
+	"strconv"
+	"time"
+)
+
+func Dict(values ...interface{}) (map[string]interface{}, error) {
+	if len(values)%2 != 0 {
+		return nil, errors.New("invalid dict call")
+	}
+	dict := make(map[string]interface{}, len(values)/2)
+	for i := 0; i < len(values); i += 2 {
+		key, ok := values[i].(string)
+		if !ok {
+			return nil, errors.New("dict keys must be strings")
+		}
+		dict[key] = values[i+1]
+	}
+	return dict, nil
+}
+
+func FormatDateSpanish(date time.Time) string {
+	months := []string{"enero", "febrero", "marzo", "abril", "mayo", "junio", "julio", "agosto", "septiembre", "octubre", "noviembre", "diciembre"}
+	days := []string{"domingo", "lunes", "martes", "miércoles", "jueves", "viernes", "sábado"}
+
+	dayName := days[date.Weekday()]
+	day := date.Day()
+	month := months[date.Month()-1]
+	year := date.Year()
+
+	return dayName + ", " + strconv.Itoa(day) + " de " + month + " de " + strconv.Itoa(year)
+}

utils/utils.go

@@ -57,7 +57,3 @@ func Slugify(s string) string {
 
 	return s
 }
-
-func isMn(r rune) bool {
-	return unicode.Is(unicode.Mn, r)
-}