package databasecommands

import (
	"errors"
	"log"

	databasemodels "example.com/database/models"

	"gorm.io/driver/sqlite"
	"gorm.io/gorm"
)

func InitializeDatabase() *gorm.DB {
	db, err := gorm.Open(sqlite.Open("../db/main.db"), &gorm.Config{})
	if err != nil {
		log.Fatal("Failed to connect to database.")
	}
	db.AutoMigrate(
		&databasemodels.User{},
		&databasemodels.Group{},
		&databasemodels.FunctionTag{},
		&databasemodels.ItemTag{},
		&databasemodels.Function{},
		&databasemodels.FunctionSet{},
		&databasemodels.Tier{},
		&databasemodels.Role{},
		&databasemodels.Person{},
		&databasemodels.Item{},
		&databasemodels.InventorySlot{},
		&databasemodels.Character{},
		&databasemodels.Customization{},
		&databasemodels.Schematic{},
	)
	return db
}

// Create Functions

func CreateDatabaseUser(db *gorm.DB, user databasemodels.User) error {
	result := db.Create(&user)
	if result.Error != nil {
		return result.Error
	}
	return nil
}

func CreateDatabasePerson(db *gorm.DB, person databasemodels.Person) error {
	result := db.Create(&person)
	if result.Error != nil {
		return result.Error
	}
	return nil
}

func CreateDatabaseGroup(db *gorm.DB, group databasemodels.Group) error {
	result := db.Create(&group)
	if result.Error != nil {
		return result.Error
	}
	return nil
}

func CreateDatabaseCharacter(db *gorm.DB, character databasemodels.Character) error {
	result := db.Create(&character)
	if result.Error != nil {
		return result.Error
	}
	return nil
}

func CreateDatabaseRole(db *gorm.DB, role databasemodels.Role) error {
	result := db.Create(&role)
	if result.Error != nil {
		return result.Error
	}
	return nil
}

func CreateDatabaseTier(db *gorm.DB, tier databasemodels.Tier) error {
	result := db.Create(&tier)
	if result.Error != nil {
		return result.Error
	}
	return nil
}

func CreateDatabaseFunctionSet(db *gorm.DB, functionSet databasemodels.FunctionSet) error {
	result := db.Create(&functionSet)
	if result.Error != nil {
		return result.Error
	}
	return nil
}

func CreateDatabaseFunction(db *gorm.DB, function databasemodels.Function) error {
	result := db.Create(&function)
	if result.Error != nil {
		return result.Error
	}
	return nil
}

func CreateDatabaseFunctionTag(db *gorm.DB, functionTag databasemodels.FunctionTag) error {
	result := db.Create(&functionTag)
	if result.Error != nil {
		return result.Error
	}
	return nil
}

func CreateDatabaseInventorySlot(db *gorm.DB, inventorySlot databasemodels.InventorySlot) error {
	result := db.Create(&inventorySlot)
	if result.Error != nil {
		return result.Error
	}
	return nil
}

func CreateDatabaseItem(db *gorm.DB, item databasemodels.Item) error {
	result := db.Create(&item)
	if result.Error != nil {
		return result.Error
	}
	return nil
}

func CreateDatabaseItemTag(db *gorm.DB, itemTag databasemodels.ItemTag) error {
	result := db.Create(&itemTag)
	if result.Error != nil {
		return result.Error
	}
	return nil
}

func CreateDatabaseCustomization(db *gorm.DB, customization databasemodels.Customization) error {
	result := db.Create(&customization)
	if result.Error != nil {
		return result.Error
	}
	return nil
}

func CreateDatabaseSchematic(db *gorm.DB, schematic databasemodels.Schematic) error {
	result := db.Create(&schematic)
	if result.Error != nil {
		return result.Error
	}
	return nil
}

// Read Functions

func GetDatabaseUserToken(db *gorm.DB, id string) string {
	var dbUser databasemodels.User
	result := db.Where("id = ?", id).Select("login_token").Take(&dbUser)
	if errors.Is(result.Error, gorm.ErrRecordNotFound) {
		return ""
	} else {
		return dbUser.LoginToken
	}
}

func GetDatabaseUserExists(db *gorm.DB, id string) bool {
	var queryUser databasemodels.User
	result := db.Where("id = ?", id).Take(&queryUser)
	if errors.Is(result.Error, gorm.ErrRecordNotFound) {
		return false
	} else {
		return true
	}
}

func GetDatabaseUserLoggedIn(db *gorm.DB, oauthTokenJSON string) bool {
	var queryUser databasemodels.User
	result := db.Where("login_token = ?", oauthTokenJSON).Take(&queryUser)
	if errors.Is(result.Error, gorm.ErrRecordNotFound) {
		return false
	} else {
		return queryUser.LoggedIn
	}
}

func GetDatabaseUserLoggedInFromDiscordId(db *gorm.DB, discordId string) bool {
	var queryUser databasemodels.User
	result := db.Where("id = ?", discordId).Take(&queryUser)
	if errors.Is(result.Error, gorm.ErrRecordNotFound) {
		return false
	} else {
		return queryUser.LoggedIn
	}
}

func GetDatabasePerson(db *gorm.DB, inputPerson string) databasemodels.Person {
	var outputPerson databasemodels.Person
	result := db.Model(&databasemodels.Person{}).Where("name = ?", inputPerson).Take(&outputPerson)
	if result.Error != nil {
		return databasemodels.Person{}
	}
	return outputPerson
}

func GetDatabasePersons(db *gorm.DB) []databasemodels.Person {
	var outputPersons []databasemodels.Person
	db.Find(&outputPersons)
	for index, outputPerson := range outputPersons {
		db.Model(&outputPerson).Association("Groups").Find(&outputPersons[index].Groups)
	}
	return outputPersons
}

func GetDatabaseGroup(db *gorm.DB, inputGroup string) databasemodels.Group {
	var outputGroup databasemodels.Group
	result := db.Model(&databasemodels.Group{}).Where("name = ?", inputGroup).Take(&outputGroup)
	if result.Error != nil {
		return databasemodels.Group{}
	}
	return outputGroup
}

func GetDatabaseGroups(db *gorm.DB) []string {
	var outputGroups []databasemodels.Group
	var outputGroupsList []string
	result := db.Find(&outputGroups)
	if result.Error != nil {
		return outputGroupsList
	} else {
		for _, group := range outputGroups {
			outputGroupsList = append(outputGroupsList, group.Name)
		}
		return outputGroupsList
	}
}

func GetDatabaseCharacter(db *gorm.DB, inputCharacter string) databasemodels.Character {
	var outputCharacter databasemodels.Character
	result := db.Model(&databasemodels.Character{}).Where("name = ?", inputCharacter).Take(&outputCharacter)
	if result.Error != nil {
		return databasemodels.Character{}
	}
	return outputCharacter
}

func GetDatabaseCharacters(db *gorm.DB) []databasemodels.Character {
	var outputCharacters []databasemodels.Character
	db.Find(&outputCharacters)
	for index, outputCharacter := range outputCharacters {
		db.Model(&outputCharacter).Association("Owners").Find(&outputCharacters[index].Owners)
		db.Model(&outputCharacter).Association("Roles").Find(&outputCharacters[index].Roles)
		db.Model(&outputCharacter).Association("FunctionSets").Find(&outputCharacters[index].FunctionSets)
		db.Model(&outputCharacter).Association("Inventory").Find(&outputCharacters[index].Inventory)
	}
	return outputCharacters
}

func GetDatabaseRole(db *gorm.DB, inputRole string) databasemodels.Role {
	var outputRole databasemodels.Role
	result := db.Model(&databasemodels.Role{}).Where("name = ?", inputRole).Take(&outputRole)
	if result.Error != nil {
		return databasemodels.Role{}
	}
	return outputRole
}

func GetDatabaseRoles(db *gorm.DB) []databasemodels.Role {
	var outputRoles []databasemodels.Role
	db.Find(&outputRoles)
	for index, outputRole := range outputRoles {
		db.Model(&outputRole).Association("Tiers").Find(&outputRoles[index].Tiers)
		db.Model(&outputRole).Association("Visibility").Find(&outputRoles[index].Visibility)
	}
	return outputRoles
}

func GetDatabaseTier(db *gorm.DB, inputTier int) databasemodels.Tier {
	var outputTier databasemodels.Tier
	result := db.Model(&databasemodels.Tier{}).Where("id = ?", inputTier).Take(&outputTier)
	if result.Error != nil {
		return databasemodels.Tier{}
	}
	return outputTier
}

func GetDatabaseTiers(db *gorm.DB) []databasemodels.Tier {
	var outputTiers []databasemodels.Tier
	db.Find(&outputTiers)
	for index, outputTier := range outputTiers {
		db.Model(&outputTier).Association("FunctionSets").Find(&outputTiers[index].FunctionSets)
	}
	return outputTiers
}

func GetDatabaseFunction(db *gorm.DB, inputFunction string) databasemodels.Function {
	var outputFunction databasemodels.Function
	result := db.Model(&databasemodels.Function{}).Where("name = ?", inputFunction).Take(&outputFunction)
	if result.Error != nil {
		return databasemodels.Function{}
	}
	return outputFunction
}

func GetDatabaseFunctions(db *gorm.DB) []databasemodels.Function {
	var outputFunctions []databasemodels.Function
	db.Find(&outputFunctions)
	for index, outputFunction := range outputFunctions {
		db.Model(&outputFunction).Association("Tags").Find(&outputFunctions[index].Tags)
		db.Model(&outputFunction).Association("Requirements").Find(&outputFunctions[index].Requirements)
	}
	return outputFunctions
}

func GetDatabaseFunctionTag(db *gorm.DB, inputFunctionTag string) databasemodels.FunctionTag {
	var outputFunctionTag databasemodels.FunctionTag
	result := db.Model(&databasemodels.FunctionTag{}).Where("name = ?", inputFunctionTag).Take(&outputFunctionTag)
	if result.Error != nil {
		return databasemodels.FunctionTag{}
	}
	return outputFunctionTag
}

func GetDatabaseFunctionTags(db *gorm.DB) []string {
	var outputFunctionTags []databasemodels.FunctionTag
	var outputFunctionTagsList []string
	result := db.Find(&outputFunctionTags)
	if result.Error != nil {
		return outputFunctionTagsList
	} else {
		for _, functionTag := range outputFunctionTags {
			outputFunctionTagsList = append(outputFunctionTagsList, functionTag.Name)
		}
		return outputFunctionTagsList
	}
}

// Update Functions

func LogoutDatabaseUser(db *gorm.DB, oauthToken string) {
	db.Model(&databasemodels.User{}).Where("login_token = ?", oauthToken).Update("logged_in", false)
}

func UpdateDatabaseUser(db *gorm.DB, user databasemodels.User) error {
	result := db.Save(&user)
	if result.Error != nil {
		return result.Error
	}
	return nil
}

func UpdateDatabasePerson(db *gorm.DB, person databasemodels.Person) error {
	result := db.Save(&person)
	if result.Error != nil {
		return result.Error
	}
	return nil
}

func UpdateDatabaseGroup(db *gorm.DB, group databasemodels.Group) error {
	result := db.Save(&group)
	if result.Error != nil {
		return result.Error
	}
	return nil
}

func UpdateDatabaseCharacter(db *gorm.DB, character databasemodels.Character) error {
	result := db.Save(&character)
	if result.Error != nil {
		return result.Error
	}
	return nil
}

func UpdateDatabaseRole(db *gorm.DB, role databasemodels.Role) error {
	result := db.Save(&role)
	if result.Error != nil {
		return result.Error
	}
	return nil
}

func UpdateDatabaseTier(db *gorm.DB, tier databasemodels.Tier) error {
	result := db.Save(&tier)
	if result.Error != nil {
		return result.Error
	}
	return nil
}

func UpdateDatabaseFunctionSet(db *gorm.DB, functionSet databasemodels.FunctionSet) error {
	result := db.Save(&functionSet)
	if result.Error != nil {
		return result.Error
	}
	return nil
}

func UpdateDatabaseFunction(db *gorm.DB, function databasemodels.Function) error {
	result := db.Save(&function)
	if result.Error != nil {
		return result.Error
	}
	return nil
}

func UpdateDatabaseFunctionTag(db *gorm.DB, functionTag databasemodels.FunctionTag) error {
	result := db.Save(&functionTag)
	if result.Error != nil {
		return result.Error
	}
	return nil
}

func UpdateDatabaseInventorySlot(db *gorm.DB, inventoySlot databasemodels.InventorySlot) error {
	result := db.Save(&inventoySlot)
	if result.Error != nil {
		return result.Error
	}
	return nil
}

func UpdateDatabaseItem(db *gorm.DB, item databasemodels.Item) error {
	result := db.Save(&item)
	if result.Error != nil {
		return result.Error
	}
	return nil
}

func UpdateDatabaseItemTag(db *gorm.DB, itemTag databasemodels.ItemTag) error {
	result := db.Save(&itemTag)
	if result.Error != nil {
		return result.Error
	}
	return nil
}

func UpdateDatabaseCustomization(db *gorm.DB, customization databasemodels.Customization) error {
	result := db.Save(&customization)
	if result.Error != nil {
		return result.Error
	}
	return nil
}

func UpdateDatabaseSchematic(db *gorm.DB, schematic databasemodels.Schematic) error {
	result := db.Save(&schematic)
	if result.Error != nil {
		return result.Error
	}
	return nil
}

// Delete Functions