package slurm

import (
	"context"
	"fmt"
	"net/url"
)

// Node query flags for GetNodesOptions.Flags and GetNodeOptions.Flags.
const (
	NodeFlagAll        = "ALL"
	NodeFlagDetail     = "DETAIL"
	NodeFlagMixed      = "MIXED"
	NodeFlagLocal      = "LOCAL"
	NodeFlagSibling    = "SIBLING"
	NodeFlagFederation = "FEDERATION"
	NodeFlagFuture     = "FUTURE"
)

// GetNodesOptions specifies optional parameters for GetNodes.
type GetNodesOptions struct {
	UpdateTime *string `url:"update_time,omitempty"`
	Flags      *string `url:"flags,omitempty"` // Use NodeFlag* constants (e.g. NodeFlagDetail)
}

// GetNodeOptions specifies optional parameters for GetNode.
type GetNodeOptions struct {
	UpdateTime *string `url:"update_time,omitempty"`
	Flags      *string `url:"flags,omitempty"` // Use NodeFlag* constants (e.g. NodeFlagDetail)
}

// GetNodes lists all nodes.
func (s *NodesService) GetNodes(ctx context.Context, opts *GetNodesOptions) (*OpenapiNodesResp, *Response, error) {
	path := "slurm/v0.0.40/nodes"
	req, err := s.client.NewRequest("GET", path, nil)
	if err != nil {
		return nil, nil, err
	}

	if opts != nil {
		u, parseErr := url.Parse(req.URL.String())
		if parseErr != nil {
			return nil, nil, parseErr
		}
		q := u.Query()
		if opts.UpdateTime != nil {
			q.Set("update_time", *opts.UpdateTime)
		}
		if opts.Flags != nil {
			q.Set("flags", *opts.Flags)
		}
		u.RawQuery = q.Encode()
		req.URL = u
	}

	var result OpenapiNodesResp
	resp, err := s.client.Do(ctx, req, &result)
	if err != nil {
		return nil, resp, err
	}
	return &result, resp, nil
}

// GetNode gets a single node by name.
func (s *NodesService) GetNode(ctx context.Context, nodeName string, opts *GetNodeOptions) (*OpenapiNodesResp, *Response, error) {
	path := fmt.Sprintf("slurm/v0.0.40/node/%s", nodeName)
	req, err := s.client.NewRequest("GET", path, nil)
	if err != nil {
		return nil, nil, err
	}

	if opts != nil {
		u, parseErr := url.Parse(req.URL.String())
		if parseErr != nil {
			return nil, nil, parseErr
		}
		q := u.Query()
		if opts.UpdateTime != nil {
			q.Set("update_time", *opts.UpdateTime)
		}
		if opts.Flags != nil {
			q.Set("flags", *opts.Flags)
		}
		u.RawQuery = q.Encode()
		req.URL = u
	}

	var result OpenapiNodesResp
	resp, err := s.client.Do(ctx, req, &result)
	if err != nil {
		return nil, resp, err
	}
	return &result, resp, nil
}

// PostNode updates a node.
func (s *NodesService) PostNode(ctx context.Context, nodeName string, update *UpdateNodeMsg) (*OpenapiResp, *Response, error) {
	path := fmt.Sprintf("slurm/v0.0.40/node/%s", nodeName)
	req, err := s.client.NewRequest("POST", path, update)
	if err != nil {
		return nil, nil, err
	}

	var result OpenapiResp
	resp, err := s.client.Do(ctx, req, &result)
	if err != nil {
		return nil, resp, err
	}
	return &result, resp, nil
}

// DeleteNode deletes a node.
func (s *NodesService) DeleteNode(ctx context.Context, nodeName string) (*OpenapiResp, *Response, error) {
	path := fmt.Sprintf("slurm/v0.0.40/node/%s", nodeName)
	req, err := s.client.NewRequest("DELETE", path, nil)
	if err != nil {
		return nil, nil, err
	}

	var result OpenapiResp
	resp, err := s.client.Do(ctx, req, &result)
	if err != nil {
		return nil, resp, err
	}
	return &result, resp, nil
}