// Copyright (c) 2019, Andreas Schneider
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
//     * Redistributions of source code must retain the above copyright
//       notice, this list of conditions and the following disclaimer.
//     * Redistributions in binary form must reproduce the above copyright
//       notice, this list of conditions and the following disclaimer in the
//       documentation and/or other materials provided with the distribution.
//     * Neither the name of the <organization> nor the
//       names of its contributors may be used to endorse or promote products
//       derived from this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
// ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
// WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
// DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
// DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
// (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
// LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
// ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
// SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

package main

import (
	"github.com/go-yaml/yaml"
	"os"
)

type Config struct {
	ListenAddress string           `yaml:"listenAddress"`
	BaseDirectory string           `yaml:"baseDirectory"`
	Shares        map[string]Share `yaml:"shares"`
}

type Share struct {
	Directory string               `yaml:"directory"`
	Users     map[string]ShareUser `yaml:"users"`
}

type ShareUser struct {
	Role   string            `yaml:"role"`
	Logins map[string]string `yaml:"logins"`
}

func LoadConfig(filename string) Config {
	c := Config{}
	f, err := os.Open(filename)
	if err != nil {
		panic(err)
	}
	defer f.Close()
	if err := yaml.NewDecoder(f).Decode(&c); err != nil {
		panic(err)
	}

	return c
}

func (c *Config) ValidateDAVUser(username, password string) (valid bool, directory string) {
	/*parts := strings.SplitN(username, "@", 2)
	if len(parts) != 2 {
		return false, ""
	}

	l, ok := c.Logins[parts[0]]
	if !ok {
		return false, ""
	}

	cred, ok := l.Credentials[parts[1]]
	if !ok {
		return false, ""
	}

	share, ok := c.Shares[cred.Share]
	if !ok {
		log.Printf("Invalid share for user %s: %s\n", username, cred.Share)
		return false, ""
	}

	err := bcrypt.CompareHashAndPassword([]byte(cred.Password), []byte(password))
	if err == bcrypt.ErrMismatchedHashAndPassword {
		return false, ""
	} else if err != nil {
		log.Printf("Cannot validate password for user %s: %s\n", username, err.Error())
		return false, ""
	} else {
		return true, share.Directory
	}*/
	return false, ""
}