// Copyright 2017 Frédéric Guillot. All rights reserved.
// Use of this source code is governed by the Apache 2.0
// license that can be found in the LICENSE file.

package storage // import "miniflux.app/storage"

import (
	"database/sql"
	"fmt"

	"miniflux.app/model"
)

// HasDuplicateFeverUsername checks if another user have the same fever username.
func (s *Storage) HasDuplicateFeverUsername(userID int64, feverUsername string) bool {
	query := `
		SELECT
			count(*) as c
		FROM integrations
		WHERE user_id != $1 AND fever_username=$2
	`

	var result int
	s.db.QueryRow(query, userID, feverUsername).Scan(&result)
	return result >= 1
}

// UserByFeverToken returns a user by using the Fever API token.
func (s *Storage) UserByFeverToken(token string) (*model.User, error) {
	query := `
		SELECT
			users.id, users.is_admin, users.timezone
		FROM users
		LEFT JOIN integrations ON integrations.user_id=users.id
		WHERE integrations.fever_enabled='t' AND integrations.fever_token=$1
	`

	var user model.User
	err := s.db.QueryRow(query, token).Scan(&user.ID, &user.IsAdmin, &user.Timezone)
	switch {
	case err == sql.ErrNoRows:
		return nil, nil
	case err != nil:
		return nil, fmt.Errorf("unable to fetch user: %v", err)
	}

	return &user, nil
}

// Integration returns user integration settings.
func (s *Storage) Integration(userID int64) (*model.Integration, error) {
	query := `SELECT
			user_id,
			pinboard_enabled,
			pinboard_token,
			pinboard_tags,
			pinboard_mark_as_unread,
			instapaper_enabled,
			instapaper_username,
			instapaper_password,
			fever_enabled,
			fever_username,
			fever_password,
			fever_token,
			wallabag_enabled,
			wallabag_url,
			wallabag_client_id,
			wallabag_client_secret,
			wallabag_username,
			wallabag_password,
			nunux_keeper_enabled,
			nunux_keeper_url,
			nunux_keeper_api_key,
			pocket_enabled,
			pocket_access_token,
			pocket_consumer_key
		FROM integrations
		WHERE user_id=$1
	`
	var integration model.Integration
	err := s.db.QueryRow(query, userID).Scan(
		&integration.UserID,
		&integration.PinboardEnabled,
		&integration.PinboardToken,
		&integration.PinboardTags,
		&integration.PinboardMarkAsUnread,
		&integration.InstapaperEnabled,
		&integration.InstapaperUsername,
		&integration.InstapaperPassword,
		&integration.FeverEnabled,
		&integration.FeverUsername,
		&integration.FeverPassword,
		&integration.FeverToken,
		&integration.WallabagEnabled,
		&integration.WallabagURL,
		&integration.WallabagClientID,
		&integration.WallabagClientSecret,
		&integration.WallabagUsername,
		&integration.WallabagPassword,
		&integration.NunuxKeeperEnabled,
		&integration.NunuxKeeperURL,
		&integration.NunuxKeeperAPIKey,
		&integration.PocketEnabled,
		&integration.PocketAccessToken,
		&integration.PocketConsumerKey,
	)
	switch {
	case err == sql.ErrNoRows:
		return &integration, nil
	case err != nil:
		return &integration, fmt.Errorf("unable to fetch integration row: %v", err)
	}

	return &integration, nil
}

// UpdateIntegration saves user integration settings.
func (s *Storage) UpdateIntegration(integration *model.Integration) error {
	query := `
		UPDATE integrations SET
			pinboard_enabled=$1,
			pinboard_token=$2,
			pinboard_tags=$3,
			pinboard_mark_as_unread=$4,
			instapaper_enabled=$5,
			instapaper_username=$6,
			instapaper_password=$7,
			fever_enabled=$8,
			fever_username=$9,
			fever_password=$10,
			fever_token=$11,
			wallabag_enabled=$12,
			wallabag_url=$13,
			wallabag_client_id=$14,
			wallabag_client_secret=$15,
			wallabag_username=$16,
			wallabag_password=$17,
			nunux_keeper_enabled=$18,
			nunux_keeper_url=$19,
			nunux_keeper_api_key=$20,
			pocket_enabled=$21,
			pocket_access_token=$22,
			pocket_consumer_key=$23
		WHERE user_id=$24
	`
	_, err := s.db.Exec(
		query,
		integration.PinboardEnabled,
		integration.PinboardToken,
		integration.PinboardTags,
		integration.PinboardMarkAsUnread,
		integration.InstapaperEnabled,
		integration.InstapaperUsername,
		integration.InstapaperPassword,
		integration.FeverEnabled,
		integration.FeverUsername,
		integration.FeverPassword,
		integration.FeverToken,
		integration.WallabagEnabled,
		integration.WallabagURL,
		integration.WallabagClientID,
		integration.WallabagClientSecret,
		integration.WallabagUsername,
		integration.WallabagPassword,
		integration.NunuxKeeperEnabled,
		integration.NunuxKeeperURL,
		integration.NunuxKeeperAPIKey,
		integration.PocketEnabled,
		integration.PocketAccessToken,
		integration.PocketConsumerKey,
		integration.UserID,
	)

	if err != nil {
		return fmt.Errorf("unable to update integration row: %v", err)
	}

	return nil
}

// CreateIntegration creates initial user integration settings.
func (s *Storage) CreateIntegration(userID int64) error {
	query := `INSERT INTO integrations (user_id) VALUES ($1)`
	_, err := s.db.Exec(query, userID)
	if err != nil {
		return fmt.Errorf("unable to create integration row: %v", err)
	}

	return nil
}

// HasSaveEntry returns true if the given user can save articles to third-parties.
func (s *Storage) HasSaveEntry(userID int64) (result bool) {
	query := `
		SELECT true FROM integrations
		WHERE user_id=$1 AND
		(pinboard_enabled='t' OR instapaper_enabled='t' OR wallabag_enabled='t' OR nunux_keeper_enabled='t' OR pocket_enabled='t')
	`

	if err := s.db.QueryRow(query, userID).Scan(&result); err != nil {
		result = false
	}

	return result
}
