package api

import (
	domainArticle "RenewCMS/internal/domain/article"
	domainImage "RenewCMS/internal/domain/image"
	domainInvite "RenewCMS/internal/domain/invite"
	domainMail "RenewCMS/internal/domain/mail"
	domainUser "RenewCMS/internal/domain/user"
	"RenewCMS/internal/infrastructure/config"
	"RenewCMS/internal/infrastructure/hashing"
	"RenewCMS/internal/infrastructure/mailer"
	"RenewCMS/internal/infrastructure/persistence/models"
	persistence "RenewCMS/internal/infrastructure/persistence/repositories"
	"RenewCMS/internal/infrastructure/useCases"
	"fmt"
	"os"
	"path/filepath"

	"github.com/glebarez/sqlite"
	"github.com/go-chi/jwtauth/v5"
	"gorm.io/gorm"
)

type UseCases struct {
	Token                       *jwtauth.JWTAuth
	CreateArticleUseCase        *useCases.CreateArticleUseCase
	GetArticleUseCase           *useCases.GetArticleUseCase
	ListArticlesUseCase         *useCases.ListArticlesUseCase
	UpdateArticleUseCase        *useCases.UpdateArticleUseCase
	DeleteArticleUseCase        *useCases.DeleteArticleUseCase
	GetUserUseCase              *useCases.GetUserUseCase
	CreateUserUseCase           *useCases.CreateUserUseCase
	AuthenticateUserUseCase     *useCases.AuthenticateUserUseCase
	VerifyUserUseCase           *useCases.VerifyUserUseCase
	CancelRegistrationUseCase   *useCases.CancelRegistrationUseCase
	RequestPasswordResetUseCase *useCases.RequestPasswordResetUseCase
	ResetPasswordUseCase        *useCases.ResetPasswordUseCase
	UpdateUserProfileUseCase    *useCases.UpdateUserProfileUseCase
	ListUsersUseCase            *useCases.ListUsersUseCase
	CreateInviteUseCase         *useCases.CreateInviteUseCase
	ListUsersAndInvitesUseCase  *useCases.ListUsersAndInvitesUseCase
	GetInviteUseCase            *useCases.GetInviteUseCase
	AcceptInviteUseCase         *useCases.AcceptInviteUseCase
	SendMailUseCase             *useCases.SendMailUseCase
	CreateImageUseCase          *useCases.CreateImageUseCase
	DeleteImageUseCase          *useCases.DeleteImageUseCase
	GetSettingsUseCase          *useCases.GetSettingsUseCase
}

type Repositories struct {
	ArticleRepo domainArticle.Repository
	UserRepo    domainUser.Repository
	ImageRepo   domainImage.Repository
	InviteRepo  domainInvite.Repository
	MailRepo    domainMail.Repository
}

const sqliteBusyTimeoutMs = 5000

func SQLiteDSN(dbName string) string {
	return fmt.Sprintf("%s?_pragma=busy_timeout(%d)", dbName, sqliteBusyTimeoutMs)
}

func getDb(dbName string) *gorm.DB {
	if err := os.MkdirAll(filepath.Dir(dbName), os.ModePerm); err != nil {
		panic("Unable to create necessary subdirectories: " + err.Error())
	}
	db, err := gorm.Open(sqlite.Open(SQLiteDSN(dbName)), &gorm.Config{})
	if err != nil {
		panic("Unable to open the database: " + err.Error())
	}

	if err := db.AutoMigrate(&models.Article{}, &models.User{}, &models.Invite{}); err != nil {
		panic("Failed to migrate database: " + err.Error())
	}

	return db
}

func getRepositories(db *gorm.DB, settings config.Settings) *Repositories {
	return &Repositories{
		ArticleRepo: persistence.NewArticleRepository(db),
		UserRepo:    persistence.NewUserRepository(db),
		ImageRepo:   persistence.NewImageRepository(db, settings.UploadDir),
		InviteRepo:  persistence.NewInviteRepository(db),
		MailRepo:    mailer.NewMailRepository(settings.Smtp),
	}
}

func getUseCases(repos *Repositories, settings config.Settings) *UseCases {
	hasher := hashing.NewBcryptHasher()

	return &UseCases{
		Token:                       jwtauth.New("HS256", []byte(settings.JWTSecret), nil),
		CreateArticleUseCase:        useCases.NewCreateArticleUseCase(repos.ArticleRepo),
		GetArticleUseCase:           useCases.NewGetArticleUseCase(repos.ArticleRepo),
		ListArticlesUseCase:         useCases.NewListArticlesUseCase(repos.ArticleRepo),
		UpdateArticleUseCase:        useCases.NewUpdateArticleUseCase(repos.ArticleRepo),
		DeleteArticleUseCase:        useCases.NewDeleteArticleUseCase(repos.ArticleRepo, repos.ImageRepo),
		GetUserUseCase:              useCases.NewGetUserUseCase(repos.UserRepo),
		CreateUserUseCase:           useCases.NewCreateUserUseCase(repos.UserRepo, hasher, repos.MailRepo, settings.PublicURL),
		AuthenticateUserUseCase:     useCases.NewAuthenticateUserUseCase(repos.UserRepo, hasher),
		VerifyUserUseCase:           useCases.NewVerifyUserUseCase(repos.UserRepo, hasher),
		CancelRegistrationUseCase:   useCases.NewCancelRegistrationUseCase(repos.UserRepo),
		RequestPasswordResetUseCase: useCases.NewRequestPasswordResetUseCase(repos.UserRepo, hasher, repos.MailRepo, settings.PublicURL),
		ResetPasswordUseCase:        useCases.NewResetPasswordUseCase(repos.UserRepo, hasher),
		UpdateUserProfileUseCase:    useCases.NewUpdateUserProfileUseCase(repos.UserRepo),
		ListUsersUseCase:            useCases.NewListUsersUseCase(repos.UserRepo),
		CreateInviteUseCase:         useCases.NewCreateInviteUseCase(repos.UserRepo, repos.InviteRepo, hasher, repos.MailRepo, settings.PublicURL),
		ListUsersAndInvitesUseCase:  useCases.NewListUsersAndInvitesUseCase(repos.UserRepo, repos.InviteRepo),
		GetInviteUseCase:            useCases.NewGetInviteUseCase(repos.InviteRepo, hasher),
		AcceptInviteUseCase:         useCases.NewAcceptInviteUseCase(repos.UserRepo, repos.InviteRepo, hasher),
		SendMailUseCase:             useCases.NewSendMailUseCase(repos.MailRepo),
		CreateImageUseCase:          useCases.NewCreateImageUseCase(repos.ImageRepo),
		DeleteImageUseCase:          useCases.NewDeleteImageUseCase(repos.ImageRepo),
		GetSettingsUseCase:          useCases.NewGetSettingsUseCase(settings.Version),
	}
}

func InitContainer(settings config.Settings) (*UseCases, func() error) {
	db := getDb(settings.DBFile)
	repos := getRepositories(db, settings)
	return getUseCases(repos, settings), closeDb(db)
}

func closeDb(db *gorm.DB) func() error {
	return func() error {
		sqlDb, err := db.DB()
		if err != nil {
			return err
		}
		return sqlDb.Close()
	}
}