package agent

import (
	"github.com/hashicorp/consul/consul/structs"
	"net/http"
	"strings"
)

func (s *HTTPServer) HealthChecksInState(resp http.ResponseWriter, req *http.Request) (interface{}, error) {
	// Set default DC
	args := structs.ChecksInStateRequest{
		Datacenter: s.agent.config.Datacenter,
	}

	// Check for other DC
	params := req.URL.Query()
	if other := params.Get("dc"); other != "" {
		args.Datacenter = other
	}

	// Pull out the service name
	args.State = strings.TrimPrefix(req.URL.Path, "/v1/health/state/")
	if args.State == "" {
		resp.WriteHeader(400)
		resp.Write([]byte("Missing check state"))
		return nil, nil
	}

	// Make the RPC request
	var out structs.HealthChecks
	if err := s.agent.RPC("Health.ChecksInState", &args, &out); err != nil {
		return nil, err
	}
	return out, nil
}

func (s *HTTPServer) HealthNodeChecks(resp http.ResponseWriter, req *http.Request) (interface{}, error) {
	// Set default DC
	args := structs.NodeSpecificRequest{
		Datacenter: s.agent.config.Datacenter,
	}

	// Check for other DC
	params := req.URL.Query()
	if other := params.Get("dc"); other != "" {
		args.Datacenter = other
	}

	// Pull out the service name
	args.Node = strings.TrimPrefix(req.URL.Path, "/v1/health/node/")
	if args.Node == "" {
		resp.WriteHeader(400)
		resp.Write([]byte("Missing node name"))
		return nil, nil
	}

	// Make the RPC request
	var out structs.HealthChecks
	if err := s.agent.RPC("Health.NodeChecks", &args, &out); err != nil {
		return nil, err
	}
	return out, nil
}

func (s *HTTPServer) HealthServiceChecks(resp http.ResponseWriter, req *http.Request) (interface{}, error) {
	// Set default DC
	args := structs.ServiceSpecificRequest{
		Datacenter: s.agent.config.Datacenter,
	}

	// Check for other DC
	params := req.URL.Query()
	if other := params.Get("dc"); other != "" {
		args.Datacenter = other
	}

	// Pull out the service name
	args.ServiceName = strings.TrimPrefix(req.URL.Path, "/v1/health/checks/")
	if args.ServiceName == "" {
		resp.WriteHeader(400)
		resp.Write([]byte("Missing service name"))
		return nil, nil
	}

	// Make the RPC request
	var out structs.HealthChecks
	if err := s.agent.RPC("Health.ServiceChecks", &args, &out); err != nil {
		return nil, err
	}
	return out, nil
}

func (s *HTTPServer) HealthServiceNodes(resp http.ResponseWriter, req *http.Request) (interface{}, error) {
	// Set default DC
	args := structs.ServiceSpecificRequest{
		Datacenter: s.agent.config.Datacenter,
	}

	// Check for other DC
	params := req.URL.Query()
	if other := params.Get("dc"); other != "" {
		args.Datacenter = other
	}

	// Check for a tag
	if _, ok := params["tag"]; ok {
		args.ServiceTag = params.Get("tag")
		args.TagFilter = true
	}

	// Pull out the service name
	args.ServiceName = strings.TrimPrefix(req.URL.Path, "/v1/health/service/")
	if args.ServiceName == "" {
		resp.WriteHeader(400)
		resp.Write([]byte("Missing service name"))
		return nil, nil
	}

	// Make the RPC request
	var out structs.CheckServiceNodes
	if err := s.agent.RPC("Health.ServiceNodes", &args, &out); err != nil {
		return nil, err
	}
	return out, nil
}