// Copyright (c) HashiCorp, Inc.
// SPDX-License-Identifier: BUSL-1.1

package oidc

import (
	"context"
	"net/url"

	"github.com/hashicorp/boundary/internal/auth/oidc/store"
	"github.com/hashicorp/boundary/internal/db/timestamp"
	"github.com/hashicorp/boundary/internal/errors"
	"github.com/hashicorp/boundary/internal/oplog"
	"github.com/hashicorp/boundary/internal/types/resource"
	"google.golang.org/protobuf/proto"
)

// defaultAccountTableName defines the default table name for an Account
const defaultAccountTableName = "auth_oidc_account"

// Account contains an OIDC auth account. It is assigned to an OIDC AuthMethod
// and updates/deletes to that AuthMethod are cascaded to its Accounts.
type Account struct {
	*store.Account
	tableName string
}

// NewAccount creates a new in memory Account assigned to OIDC AuthMethod.
// WithIssuer, WithFullName, WithEmail, WithName and WithDescription are
// the only valid options. All other options are ignored.
//
// Subject equals the locally unique and never reassigned identifier within
// the Issuer for the End-User, which is intended to be consumed by the Client.
//
// Issuer equals the Verifiable Identifier for an Issuer. An Issuer
// Identifier is a case sensitive URL using the https scheme that contains
// scheme, host, and optionally, port number and path components and no query or
// fragment components.
//
// FullName equals the End-User's full name in displayable form including all name
// parts, possibly including titles and suffixes, ordered according to the
// End-User's locale and preferences.
//
// Email equals the End-User's preferred e-mail address. Its value MUST conform
// to the RFC 5322 [RFC5322] addr-spec syntax. The RP MUST NOT rely upon this
// value being unique
//
// See: https://openid.net/specs/openid-connect-core-1_0.html
func NewAccount(ctx context.Context, authMethodId string, subject string, opt ...Option) (*Account, error) {
	const op = "oidc.NewAccount"
	opts := getOpts(opt...)
	a := &Account{
		Account: &store.Account{
			AuthMethodId: authMethodId,
			Subject:      subject,
			Name:         opts.withName,
			Description:  opts.withDescription,
			FullName:     opts.withFullName,
			Email:        opts.withEmail,
		},
	}
	if opts.withIssuer != nil {
		a.Issuer = opts.withIssuer.String()
	}
	if err := a.validate(ctx, op); err != nil {
		return nil, err // intentionally not wrapped.
	}

	return a, nil
}

// validate the Account.  On success, it will return nil.
func (a *Account) validate(ctx context.Context, caller errors.Op) error {
	if a.AuthMethodId == "" {
		return errors.New(ctx, errors.InvalidParameter, caller, "missing auth method id")
	}
	if a.Subject == "" {
		return errors.New(ctx, errors.InvalidParameter, caller, "missing subject")
	}
	if _, err := url.Parse(a.Issuer); a.Issuer != "" && err != nil {
		return errors.New(ctx, errors.InvalidParameter, caller, "not a valid issuer", errors.WithWrap(err))
	}
	if a.Email != "" && len(a.Email) > 320 {
		return errors.New(ctx, errors.InvalidParameter, caller, "email address is too long")
	}
	if a.FullName != "" && len(a.FullName) > 512 {
		return errors.New(ctx, errors.InvalidParameter, caller, "full name is too long")
	}
	return nil
}

// AllocAccount makes an empty one in memory
func AllocAccount() *Account {
	return &Account{
		Account: &store.Account{},
	}
}

// Clone an Account.
func (a *Account) Clone() *Account {
	cp := proto.Clone(a.Account)
	return &Account{
		Account: cp.(*store.Account),
	}
}

// TableName returns the table name.
func (a *Account) TableName() string {
	if a.tableName != "" {
		return a.tableName
	}
	return defaultAccountTableName
}

// SetTableName sets the table name.
func (a *Account) SetTableName(n string) {
	a.tableName = n
}

// GetResourceType returns the resource type of the Account
func (a *Account) GetResourceType() resource.Type {
	return resource.Account
}

// GetLoginName returns the login name, which will always be empty as this type
// doesn't currently support login name
func (a *Account) GetLoginName() string {
	return ""
}

// oplog will create oplog metadata for the Account.
func (a *Account) oplog(op oplog.OpType, authMethodScopeId string) oplog.Metadata {
	metadata := oplog.Metadata{
		"resource-public-id": []string{a.GetPublicId()},
		"resource-type":      []string{"oidc account"},
		"op-type":            []string{op.String()},
	}
	if a.AuthMethodId != "" {
		metadata["auth-method-id"] = []string{a.AuthMethodId}
	}
	if authMethodScopeId != "" {
		metadata["scope-id"] = []string{authMethodScopeId}
	}
	return metadata
}

type deletedAccount struct {
	PublicId   string `gorm:"primary_key"`
	DeleteTime *timestamp.Timestamp
}

// TableName returns the tablename to override the default gorm table name
func (s *deletedAccount) TableName() string {
	return "auth_oidc_account_deleted"
}