package coderd

import (
	"net/http"

	"github.com/coder/coder/coderd/httpapi"
	"github.com/coder/coder/coderd/rbac"
	"github.com/coder/coder/codersdk"
)

// @Summary Get deployment DAUs
// @ID get-deployment-daus
// @Security CoderSessionToken
// @Produce json
// @Tags Insights
// @Success 200 {object} codersdk.DAUsResponse
// @Router /insights/daus [get]
func (api *API) deploymentDAUs(rw http.ResponseWriter, r *http.Request) {
	ctx := r.Context()
	if !api.Authorize(r, rbac.ActionRead, rbac.ResourceDeploymentValues) {
		httpapi.Forbidden(rw)
		return
	}

	vals := r.URL.Query()
	p := httpapi.NewQueryParamParser()
	tzOffset := p.Int(vals, 0, "tz_offset")
	p.ErrorExcessParams(vals)
	if len(p.Errors) > 0 {
		httpapi.Write(ctx, rw, http.StatusBadRequest, codersdk.Response{
			Message:     "Query parameters have invalid values.",
			Validations: p.Errors,
		})
		return
	}

	_, resp, _ := api.metricsCache.DeploymentDAUs(tzOffset)
	if resp == nil || resp.Entries == nil {
		httpapi.Write(ctx, rw, http.StatusOK, &codersdk.DAUsResponse{
			Entries: []codersdk.DAUEntry{},
		})
		return
	}
	httpapi.Write(ctx, rw, http.StatusOK, resp)
}