/*
 *  MIT License
 *
 *  Copyright (c) 2020 Nicolas JUHEL
 *
 *  Permission is hereby granted, free of charge, to any person obtaining a copy
 *  of this software and associated documentation files (the "Software"), to deal
 *  in the Software without restriction, including without limitation the rights
 *  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 *  copies of the Software, and to permit persons to whom the Software is
 *  furnished to do so, subject to the following conditions:
 *
 *  The above copyright notice and this permission notice shall be included in all
 *  copies or substantial portions of the Software.
 *
 *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 *  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 *  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 *  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 *  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 *  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 *  SOFTWARE.
 *
 */

package aws

import (
	"context"
	"net/http"
	"net/url"
	"sync"

	sdkaws "github.com/aws/aws-sdk-go-v2/aws"
	sdksv4 "github.com/aws/aws-sdk-go-v2/aws/signer/v4"
	sdkiam "github.com/aws/aws-sdk-go-v2/service/iam"
	sdksss "github.com/aws/aws-sdk-go-v2/service/s3"
	awsbck "github.com/nabbar/golib/aws/bucket"
	awsgrp "github.com/nabbar/golib/aws/group"
	awshlp "github.com/nabbar/golib/aws/helper"
	awsobj "github.com/nabbar/golib/aws/object"
	awspol "github.com/nabbar/golib/aws/policy"
	awsrol "github.com/nabbar/golib/aws/role"
	awsusr "github.com/nabbar/golib/aws/user"
	liberr "github.com/nabbar/golib/errors"
)

type Config interface {
	Check(ctx context.Context) liberr.Error
	Validate() liberr.Error

	GetAccessKey() string
	SetCredentials(accessKey, secretKey string)
	ResetRegionEndpoint()
	RegisterRegionEndpoint(region string, endpoint *url.URL) liberr.Error
	RegisterRegionAws(endpoint *url.URL) liberr.Error
	SetRegion(region string)
	GetRegion() string
	SetEndpoint(endpoint *url.URL)
	GetEndpoint() *url.URL

	IsHTTPs() bool
	ResolveEndpoint(service, region string) (sdkaws.Endpoint, error)
	ResolveEndpointWithOptions(service, region string, options ...interface{}) (sdkaws.Endpoint, error)
	GetDisableHTTPS() bool
	GetResolvedRegion() string
	SetRetryer(retryer func() sdkaws.Retryer)

	GetConfig(ctx context.Context, cli *http.Client) (*sdkaws.Config, liberr.Error)
	JSON() ([]byte, error)
	Clone() Config

	GetBucketName() string
	SetBucketName(bucket string)
}

type AWS interface {
	Bucket() awsbck.Bucket
	Group() awsgrp.Group
	Object() awsobj.Object
	Policy() awspol.Policy
	Role() awsrol.Role
	User() awsusr.User

	Config() Config
	HTTPCli() *http.Client
	Clone(ctx context.Context) (AWS, liberr.Error)
	NewForConfig(ctx context.Context, cfg Config) (AWS, liberr.Error)
	ForcePathStyle(ctx context.Context, enabled bool) liberr.Error
	ForceSignerOptions(ctx context.Context, fct ...func(signer *sdksv4.SignerOptions)) liberr.Error

	GetBucketName() string
	SetBucketName(bucket string)

	GetClientS3() *sdksss.Client
	SetClientS3(aws *sdksss.Client)
	GetClientIam() *sdkiam.Client
	SetClientIam(aws *sdkiam.Client)
}

func New(ctx context.Context, cfg Config, httpClient *http.Client) (AWS, liberr.Error) {
	if cfg == nil {
		return nil, awshlp.ErrorConfigEmpty.Error(nil)
	}

	if ctx == nil {
		ctx = context.Background()
	}

	cli := &client{
		m: sync.Mutex{},
		p: false,
		o: make([]func(signer *sdksv4.SignerOptions), 0),
		x: ctx,
		c: cfg,
		i: nil,
		s: nil,
		h: httpClient,
	}

	if i, e := cli._NewClientIAM(ctx, httpClient); e != nil {
		return nil, e
	} else {
		cli.i = i
	}

	if s, e := cli._NewClientS3(ctx, httpClient); e != nil {
		return nil, e
	} else {
		cli.s = s
	}

	return cli, nil
}