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// Copyright 2016 The Gogs Authors. All rights reserved.
// Use of this source code is governed by a MIT-style
// license that can be found in the LICENSE file.
package context
import (
"fmt"
"strings"
"code.gitea.io/gitea/models"
"code.gitea.io/gitea/modules/base"
"code.gitea.io/gitea/modules/log"
"code.gitea.io/gitea/modules/setting"
"github.com/Unknwon/paginater"
macaron "gopkg.in/macaron.v1"
)
// APIContext is a specific macaron context for API service
type APIContext struct {
*Context
Org *APIOrganization
}
// Error responses error message to client with given message.
// If status is 500, also it prints error to log.
func (ctx *APIContext) Error(status int, title string, obj interface{}) {
var message string
if err, ok := obj.(error); ok {
message = err.Error()
} else {
message = obj.(string)
}
if status == 500 {
log.Error(4, "%s: %s", title, message)
}
ctx.JSON(status, map[string]string{
"message": message,
"url": base.DocURL,
})
}
// SetLinkHeader sets pagination link header by given totol number and page size.
func (ctx *APIContext) SetLinkHeader(total, pageSize int) {
page := paginater.New(total, pageSize, ctx.QueryInt("page"), 0)
links := make([]string, 0, 4)
if page.HasNext() {
links = append(links, fmt.Sprintf("<%s%s?page=%d>; rel=\"next\"", setting.AppURL, ctx.Req.URL.Path[1:], page.Next()))
}
if !page.IsLast() {
links = append(links, fmt.Sprintf("<%s%s?page=%d>; rel=\"last\"", setting.AppURL, ctx.Req.URL.Path[1:], page.TotalPages()))
}
if !page.IsFirst() {
links = append(links, fmt.Sprintf("<%s%s?page=1>; rel=\"first\"", setting.AppURL, ctx.Req.URL.Path[1:]))
}
if page.HasPrevious() {
links = append(links, fmt.Sprintf("<%s%s?page=%d>; rel=\"prev\"", setting.AppURL, ctx.Req.URL.Path[1:], page.Previous()))
}
if len(links) > 0 {
ctx.Header().Set("Link", strings.Join(links, ","))
}
}
// APIContexter returns apicontext as macaron middleware
func APIContexter() macaron.Handler {
return func(c *Context) {
ctx := &APIContext{
Context: c,
}
c.Map(ctx)
}
}
// ExtractOwnerAndRepo returns a handler that populates the `Repo.Owner` and
// `Repo.Repository` fields of an APIContext
func ExtractOwnerAndRepo() macaron.Handler {
return func(ctx *APIContext) {
owner, err := models.GetUserByName(ctx.Params(":username"))
if err != nil {
if models.IsErrUserNotExist(err) {
ctx.Error(422, "", err)
} else {
ctx.Error(500, "GetUserByName", err)
}
return
}
repo, err := models.GetRepositoryByName(owner.ID, ctx.Params(":reponame"))
if err != nil {
if models.IsErrRepoNotExist(err) {
ctx.Status(404)
} else {
ctx.Error(500, "GetRepositoryByName", err)
}
return
}
ctx.Repo.Owner = owner
ctx.Data["Owner"] = owner
ctx.Repo.Repository = repo
ctx.Data["Repository"] = repo
}
}
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