Example ways of handling tier lockdown to encourage upgrades

code.md

Example of access to slideshow

func HasAccessBasedOnTierLimitsOnCreate(tier string, userInfo user.UserPreference, kind string) bool {
	if tier != "free" {
		return true
	}

	records := userInfo.Usage.Stats
	// assume keys exist?
	if _, ok := records[stats.SystemMissingKey]; ok {
		// Assume present means an issue
		return true
	}

	tolerance := 1
	limit := 1
	limitToAllow := limit + tolerance

	if kind == KindPDF {
		return records["list.slideshow.export.v7.total"] <= limitToAllow
	}

	if kind == KindVideo {
		return records["list.slideshow.export.v8.total"] <= limitToAllow
	}

	return false
}

Usage

userInfo := c.Get("userInfo").(user.UserPreference)
grant := HasAccessBasedOnTierLimitsOnCreate("free", userInfo, inputKind)
if !grant {
	response := api.HTTPResponseMessage{
		Message: "Upgrade tier",
	}
	return c.JSON(http.StatusPaymentRequired, response)
}

Example of access check on save list

func HasAccessBasedOnTierLimitsOnSaveAlist(tier string, records map[string]int, kind string) bool {
	if tier != "free" {
		return true
	}

	if _, ok := records[stats.SystemMissingKey]; ok {
		// Assume present means an issue
		return true
	}

	// assume keys exist?
	if records["list.slideshow.export.v7.total"] > 1 {
		return false
	}

	if records["list.slideshow.export.v8.total"] > 1 {
		return false
	}

	return false
}

Usage

userStats := c.Get("userStats").(map[string]int)

grant := HasAccessBasedOnTierLimitsOnSaveAlist("free", userStats, aList.Kind)
if !grant {
	response := api.HTTPResponseMessage{
	Message: "Upgrade tier",
	}
	return c.JSON(http.StatusPaymentRequired, response)
}