forgejo/routers/api/v1/repo/commits.go

// Copyright 2018 The Gogs Authors. All rights reserved.
// Copyright 2019 The Gitea 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 repo

import (
	"fmt"
	"math"
	"net/http"
	"strconv"

	"code.gitea.io/gitea/models"
	"code.gitea.io/gitea/modules/context"
	"code.gitea.io/gitea/modules/convert"
	"code.gitea.io/gitea/modules/git"
	"code.gitea.io/gitea/modules/setting"
	api "code.gitea.io/gitea/modules/structs"
	"code.gitea.io/gitea/modules/validation"
	"code.gitea.io/gitea/routers/api/v1/utils"
)

// GetSingleCommit get a commit via sha
func GetSingleCommit(ctx *context.APIContext) {
	// swagger:operation GET /repos/{owner}/{repo}/git/commits/{sha} repository repoGetSingleCommit
	// ---
	// summary: Get a single commit from a repository
	// produces:
	// - application/json
	// parameters:
	// - name: owner
	//   in: path
	//   description: owner of the repo
	//   type: string
	//   required: true
	// - name: repo
	//   in: path
	//   description: name of the repo
	//   type: string
	//   required: true
	// - name: sha
	//   in: path
	//   description: a git ref or commit sha
	//   type: string
	//   required: true
	// responses:
	//   "200":
	//     "$ref": "#/responses/Commit"
	//   "422":
	//     "$ref": "#/responses/validationError"
	//   "404":
	//     "$ref": "#/responses/notFound"

	sha := ctx.Params(":sha")
	if (validation.GitRefNamePatternInvalid.MatchString(sha) || !validation.CheckGitRefAdditionalRulesValid(sha)) && !git.SHAPattern.MatchString(sha) {
		ctx.Error(http.StatusUnprocessableEntity, "no valid ref or sha", fmt.Sprintf("no valid ref or sha: %s", sha))
		return
	}
	getCommit(ctx, sha)
}

func getCommit(ctx *context.APIContext, identifier string) {
	gitRepo, err := git.OpenRepository(ctx.Repo.Repository.RepoPath())
	if err != nil {
		ctx.Error(http.StatusInternalServerError, "OpenRepository", err)
		return
	}
	defer gitRepo.Close()
	commit, err := gitRepo.GetCommit(identifier)
	if err != nil {
		if git.IsErrNotExist(err) {
			ctx.NotFound(identifier)
			return
		}
		ctx.Error(http.StatusInternalServerError, "gitRepo.GetCommit", err)
		return
	}

	json, err := convert.ToCommit(ctx.Repo.Repository, commit, nil)
	if err != nil {
		ctx.Error(http.StatusInternalServerError, "toCommit", err)
		return
	}
	ctx.JSON(http.StatusOK, json)
}

// GetAllCommits get all commits via
func GetAllCommits(ctx *context.APIContext) {
	// swagger:operation GET /repos/{owner}/{repo}/commits repository repoGetAllCommits
	// ---
	// summary: Get a list of all commits from a repository
	// produces:
	// - application/json
	// parameters:
	// - name: owner
	//   in: path
	//   description: owner of the repo
	//   type: string
	//   required: true
	// - name: repo
	//   in: path
	//   description: name of the repo
	//   type: string
	//   required: true
	// - name: sha
	//   in: query
	//   description: SHA or branch to start listing commits from (usually 'master')
	//   type: string
	// - name: page
	//   in: query
	//   description: page number of results to return (1-based)
	//   type: integer
	// - name: limit
	//   in: query
	//   description: page size of results
	//   type: integer
	// responses:
	//   "200":
	//     "$ref": "#/responses/CommitList"
	//   "404":
	//     "$ref": "#/responses/notFound"
	//   "409":
	//     "$ref": "#/responses/EmptyRepository"

	if ctx.Repo.Repository.IsEmpty {
		ctx.JSON(http.StatusConflict, api.APIError{
			Message: "Git Repository is empty.",
			URL:     setting.API.SwaggerURL,
		})
		return
	}

	gitRepo, err := git.OpenRepository(ctx.Repo.Repository.RepoPath())
	if err != nil {
		ctx.Error(http.StatusInternalServerError, "OpenRepository", err)
		return
	}
	defer gitRepo.Close()

	listOptions := utils.GetListOptions(ctx)
	if listOptions.Page <= 0 {
		listOptions.Page = 1
	}

	if listOptions.PageSize > setting.Git.CommitsRangeSize {
		listOptions.PageSize = setting.Git.CommitsRangeSize
	}

	sha := ctx.Query("sha")

	var baseCommit *git.Commit
	if len(sha) == 0 {
		// no sha supplied - use default branch
		head, err := gitRepo.GetHEADBranch()
		if err != nil {
			ctx.Error(http.StatusInternalServerError, "GetHEADBranch", err)
			return
		}

		baseCommit, err = gitRepo.GetBranchCommit(head.Name)
		if err != nil {
			ctx.Error(http.StatusInternalServerError, "GetCommit", err)
			return
		}
	} else {
		// get commit specified by sha
		baseCommit, err = gitRepo.GetCommit(sha)
		if err != nil {
			ctx.Error(http.StatusInternalServerError, "GetCommit", err)
			return
		}
	}

	// Total commit count
	commitsCountTotal, err := baseCommit.CommitsCount()
	if err != nil {
		ctx.Error(http.StatusInternalServerError, "GetCommitsCount", err)
		return
	}

	pageCount := int(math.Ceil(float64(commitsCountTotal) / float64(listOptions.PageSize)))

	// Query commits
	commits, err := baseCommit.CommitsByRange(listOptions.Page, listOptions.PageSize)
	if err != nil {
		ctx.Error(http.StatusInternalServerError, "CommitsByRange", err)
		return
	}

	userCache := make(map[string]*models.User)

	apiCommits := make([]*api.Commit, commits.Len())

	i := 0
	for commitPointer := commits.Front(); commitPointer != nil; commitPointer = commitPointer.Next() {
		commit := commitPointer.Value.(*git.Commit)

		// Create json struct
		apiCommits[i], err = convert.ToCommit(ctx.Repo.Repository, commit, userCache)
		if err != nil {
			ctx.Error(http.StatusInternalServerError, "toCommit", err)
			return
		}

		i++
	}

	// kept for backwards compatibility
	ctx.Header().Set("X-Page", strconv.Itoa(listOptions.Page))
	ctx.Header().Set("X-PerPage", strconv.Itoa(listOptions.PageSize))
	ctx.Header().Set("X-Total", strconv.FormatInt(commitsCountTotal, 10))
	ctx.Header().Set("X-PageCount", strconv.Itoa(pageCount))
	ctx.Header().Set("X-HasMore", strconv.FormatBool(listOptions.Page < pageCount))

	ctx.SetLinkHeader(int(commitsCountTotal), listOptions.PageSize)
	ctx.Header().Set("X-Total-Count", fmt.Sprintf("%d", commitsCountTotal))
	ctx.Header().Set("Access-Control-Expose-Headers", "X-Total-Count, X-PerPage, X-Total, X-PageCount, X-HasMore, Link")

	ctx.JSON(http.StatusOK, &apiCommits)
}