package events

import (
	"time"
	"strings"
	"fmt"
)

type EventsRequest struct {
	Filter struct {
		CreatedAt struct {
			From, To time.Time
		}
		Type []string
		Entity []string
	}
	Page, Limit uint
	Ids, CreatedBy []int
	With []string
}

func (req EventsRequest) Format() string {
	opts := []string{}

	if len(req.With) > 0 {
		buf := fmt.Sprintf("with=%s", req.With[0])
		for _, with := range req.With[1:] {
			buf += ","+with
		}
		opts = append(opts, buf)
	}
	if req.Page > 0 {
		opts = append(opts, fmt.Sprintf("page=%d", req.Page))
	}
	if req.Limit > 0 {
		opts = append(opts, fmt.Sprintf("limit=%d", req.Limit))
	}
	if !req.Filter.CreatedAt.From.IsZero() && req.Filter.CreatedAt.To.IsZero() {
		opts = append(opts, fmt.Sprintf("filter[created_at]=%d",
			req.Filter.CreatedAt.From.Unix(),
		))
	} else if !req.Filter.CreatedAt.From.IsZero() && !req.Filter.CreatedAt.To.IsZero() {
		opts = append(
			opts,
			fmt.Sprintf("filter[created_at][from]=%d", req.Filter.CreatedAt.From.Unix()),
			fmt.Sprintf("filter[created_at][to]=%d", req.Filter.CreatedAt.To.Unix()),
		)
	}

	for i, typ := range req.Filter.Type {
		opts = append(opts, fmt.Sprintf("filter[type][%d]=%s", i, typ))
	}

	for i, ent := range req.Filter.Entity {
		opts = append(opts, fmt.Sprintf("filter[entity][%d]=%s", i, ent))
	}

	ret := strings.Join(opts, "&")
	return ret
}