91 lines
2.5 KiB
Go
91 lines
2.5 KiB
Go
// Copyright 2017 Frédéric Guillot. All rights reserved.
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// Use of this source code is governed by the Apache 2.0
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// license that can be found in the LICENSE file.
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package model
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import (
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"fmt"
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"time"
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)
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// Entry statuses
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const (
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EntryStatusUnread = "unread"
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EntryStatusRead = "read"
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EntryStatusRemoved = "removed"
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DefaultSortingOrder = "published_at"
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DefaultSortingDirection = "asc"
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)
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// Entry represents a feed item in the system.
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type Entry struct {
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ID int64 `json:"id"`
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UserID int64 `json:"user_id"`
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FeedID int64 `json:"feed_id"`
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Status string `json:"status"`
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Hash string `json:"hash"`
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Title string `json:"title"`
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URL string `json:"url"`
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Date time.Time `json:"published_at"`
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Content string `json:"content"`
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Author string `json:"author"`
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Enclosures EnclosureList `json:"enclosures,omitempty"`
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Feed *Feed `json:"feed,omitempty"`
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Category *Category `json:"category,omitempty"`
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}
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// Entries represents a list of entries.
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type Entries []*Entry
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// ValidateEntryStatus makes sure the entry status is valid.
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func ValidateEntryStatus(status string) error {
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switch status {
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case EntryStatusRead, EntryStatusUnread, EntryStatusRemoved:
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return nil
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}
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return fmt.Errorf(`Invalid entry status, valid status values are: "%s", "%s" and "%s"`, EntryStatusRead, EntryStatusUnread, EntryStatusRemoved)
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}
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// ValidateEntryOrder makes sure the sorting order is valid.
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func ValidateEntryOrder(order string) error {
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switch order {
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case "id", "status", "published_at", "category_title", "category_id":
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return nil
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}
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return fmt.Errorf(`Invalid entry order, valid order values are: "id", "status", "published_at", "category_title", "category_id"`)
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}
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// ValidateDirection makes sure the sorting direction is valid.
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func ValidateDirection(direction string) error {
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switch direction {
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case "asc", "desc":
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return nil
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}
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return fmt.Errorf(`Invalid direction, valid direction values are: "asc" or "desc"`)
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}
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// ValidateRange makes sure the offset/limit values are valid.
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func ValidateRange(offset, limit int) error {
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if offset < 0 {
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return fmt.Errorf(`Offset value should be >= 0`)
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}
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if limit < 0 {
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return fmt.Errorf(`Limit value should be >= 0`)
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}
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return nil
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}
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// OppositeDirection returns the opposite sorting direction.
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func OppositeDirection(direction string) string {
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if direction == "asc" {
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return "desc"
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}
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return "asc"
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}
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