// ListNodesDetails returns all load balancer pool nodes that are associated with RackConnect
// for the given LB pool ID with all their details.
func ListNodesDetails(c *gophercloud.ServiceClient, id string) pagination.Pager {
	url := listNodesDetailsURL(c, id)
	createPage := func(r pagination.PageResult) pagination.Page {
		return NodeDetailsPage{pagination.SinglePageBase(r)}
	}
	return pagination.NewPager(c, url, createPage)
}

// List members returns list of members for specifed image id
// More details: http://developer.openstack.org/api-ref-image-v2.html#listImageMembers-v2
func List(client *gophercloud.ServiceClient, id string) pagination.Pager {
	createPage := func(r pagination.PageResult) pagination.Page {
		return MemberPage{pagination.SinglePageBase(r)}
	}

	return pagination.NewPager(client, listMembersURL(client, id), createPage)
}

// List returns a Pager which allows you to iterate over the full collection of extensions.
// It does not accept query parameters.
func List(c *gophercloud.ServiceClient) pagination.Pager {
	return common.List(c).WithPageCreator(func(r pagination.PageResult) pagination.Page {
		return ExtensionPage{
			ExtensionPage: common.ExtensionPage{SinglePageBase: pagination.SinglePageBase(r)},
		}
	})
}

// List is the operation responsible for returning a paginated collection of
// network items that define a load balancer's access list.
func List(client *gophercloud.ServiceClient, lbID int) pagination.Pager {
	url := rootURL(client, lbID)

	return pagination.NewPager(client, url, func(r pagination.PageResult) pagination.Page {
		return AccessListPage{pagination.SinglePageBase(r)}
	})
}

func List(client *gophercloud.ServiceClient) pagination.Pager {
	createPage := func(r pagination.PageResult) pagination.Page {
		return UserPage{pagination.SinglePageBase(r)}
	}

	return pagination.NewPager(client, rootURL(client), createPage)
}

// List returns a Pager which allows you to iterate over a collection of
// networks. It accepts a ListOpts struct, which allows you to filter and sort
// the returned collection for greater efficiency.
func List(c *gophercloud.ServiceClient, instanceID string) pagination.Pager {
	createPage := func(r pagination.PageResult) pagination.Page {
		return VirtualInterfacePage{pagination.SinglePageBase(r)}
	}

	return pagination.NewPager(c, listURL(c, instanceID), createPage)
}

// List will list all of the available configurations.
func List(client *gophercloud.ServiceClient) pagination.Pager {
	pageFn := func(r pagination.PageResult) pagination.Page {
		return ConfigPage{pagination.SinglePageBase(r)}
	}

	return pagination.NewPager(client, baseURL(client), pageFn)
}

// Create is the operation responsible for creating a new node on a load
// balancer. Since every load balancer exists in both ServiceNet and the public
// Internet, both private and public IP addresses can be used for nodes.
//
// If nodes need time to boot up services before they become operational, you
// can temporarily prevent traffic from being sent to that node by setting the
// Condition field to DRAINING. Health checks will still be performed; but once
// your node is ready, you can update its condition to ENABLED and have it
// handle traffic.
func Create(client *gophercloud.ServiceClient, loadBalancerID int, opts CreateOptsBuilder) CreateResult {
	var res CreateResult

	reqBody, err := opts.ToNodeCreateMap()
	if err != nil {
		res.Err = err
		return res
	}

	resp, err := client.Request("POST", rootURL(client, loadBalancerID), gophercloud.RequestOpts{
		JSONBody:     &reqBody,
		JSONResponse: &res.Body,
		OkCodes:      []int{202},
	})
	if err != nil {
		res.Err = err
		return res
	}

	pr, err := pagination.PageResultFrom(resp)
	if err != nil {
		res.Err = err
		return res
	}

	return CreateResult{pagination.SinglePageBase(pr)}
}

func commonList(client *gophercloud.ServiceClient, url string) pagination.Pager {
	createPage := func(r pagination.PageResult) pagination.Page {
		return SecurityGroupPage{pagination.SinglePageBase(r)}
	}

	return pagination.NewPager(client, url, createPage)
}

// ListForServer returns all public IPs for the server with the given serverID.
func ListForServer(c *gophercloud.ServiceClient, serverID string) pagination.Pager {
	url := listForServerURL(c, serverID)
	createPage := func(r pagination.PageResult) pagination.Page {
		return PublicIPPage{pagination.SinglePageBase(r)}
	}
	return pagination.NewPager(c, url, createPage)
}

// List returns a Pager which allows you to iterate over a collection of
// networks. It accepts a ListOpts struct, which allows you to filter and sort
// the returned collection for greater efficiency.
func List(c *gophercloud.ServiceClient) pagination.Pager {
	createPage := func(r pagination.PageResult) pagination.Page {
		return NetworkPage{pagination.SinglePageBase(r)}
	}

	return pagination.NewPager(c, listURL(c), createPage)
}

// List returns a single page of CDN flavors.
func List(c *gophercloud.ServiceClient) pagination.Pager {
	url := listURL(c)
	createPage := func(r pagination.PageResult) pagination.Page {
		return FlavorPage{pagination.SinglePageBase(r)}
	}
	return pagination.NewPager(c, url, createPage)
}

func ListRoles(client *gophercloud.ServiceClient, tenantID, userID string) pagination.Pager {
	createPage := func(r pagination.PageResult) pagination.Page {
		return RolePage{pagination.SinglePageBase(r)}
	}

	return pagination.NewPager(client, listRolesURL(client, tenantID, userID), createPage)
}

// List returns all scaling policies for a group.
func List(client *gophercloud.ServiceClient, groupID string) pagination.Pager {
	url := listURL(client, groupID)

	createPageFn := func(r pagination.PageResult) pagination.Page {
		return PolicyPage{pagination.SinglePageBase(r)}
	}

	return pagination.NewPager(client, url, createPageFn)
}

// ListTypes makes a request against the API to list resource types.
func ListTypes(client *gophercloud.ServiceClient) pagination.Pager {
	url := listTypesURL(client)

	createPageFn := func(r pagination.PageResult) pagination.Page {
		return ResourceTypePage{pagination.SinglePageBase(r)}
	}

	return pagination.NewPager(client, url, createPageFn)
}

// List is the operation responsible for returning a paginated collection of
// load balancer nodes. It requires the node ID, its parent load balancer ID,
// and optional limit integer (passed in either as a pointer or a nil poitner).
func List(client *gophercloud.ServiceClient, loadBalancerID int, limit *int) pagination.Pager {
	url := rootURL(client, loadBalancerID)
	if limit != nil {
		url += fmt.Sprintf("?limit=%d", limit)
	}

	return pagination.NewPager(client, url, func(r pagination.PageResult) pagination.Page {
		return NodePage{pagination.SinglePageBase(r)}
	})
}

// List returns Volumes optionally limited by the conditions provided in ListOpts.
func List(client *gophercloud.ServiceClient, opts ListOptsBuilder) pagination.Pager {
	url := listURL(client)
	if opts != nil {
		query, err := opts.ToVolumeListQuery()
		if err != nil {
			return pagination.Pager{Err: err}
		}
		url += query
	}
	createPage := func(r pagination.PageResult) pagination.Page {
		return ListResult{pagination.SinglePageBase(r)}
	}
	return pagination.NewPager(client, url, createPage)
}

// ListEvents is the operation responsible for listing all the events
// associated with the activity between the node and the load balancer. The
// events report errors found with the node. The detailedMessage provides the
// detailed reason for the error.
func ListEvents(client *gophercloud.ServiceClient, loadBalancerID int, opts ListEventsOptsBuilder) pagination.Pager {
	url := eventsURL(client, loadBalancerID)

	if opts != nil {
		query, err := opts.ToEventsListQuery()
		if err != nil {
			return pagination.Pager{Err: err}
		}
		url += query
	}

	return pagination.NewPager(client, url, func(r pagination.PageResult) pagination.Page {
		return NodeEventPage{pagination.SinglePageBase(r)}
	})
}

// List will list all the saved backups for all database instances.
func List(client *gophercloud.ServiceClient, opts ListOptsBuilder) pagination.Pager {
	url := baseURL(client)

	if opts != nil {
		query, err := opts.ToBackupListQuery()
		if err != nil {
			return pagination.Pager{Err: err}
		}
		url += query
	}

	pageFn := func(r pagination.PageResult) pagination.Page {
		return BackupPage{pagination.SinglePageBase(r)}
	}

	return pagination.NewPager(client, url, pageFn)
}

// List makes a request against the API to list resources for the given stack.
func List(client *gophercloud.ServiceClient, stackName, stackID string, opts ListOptsBuilder) pagination.Pager {
	url := listURL(client, stackName, stackID)

	if opts != nil {
		query, err := opts.ToStackResourceListQuery()
		if err != nil {
			return pagination.Pager{Err: err}
		}
		url += query
	}

	createPageFn := func(r pagination.PageResult) pagination.Page {
		return ResourcePage{pagination.SinglePageBase(r)}
	}

	return pagination.NewPager(client, url, createPageFn)
}