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// SPDX-License-Identifier: AGPL-3.0-only
// SPDX-FileContributor: Runxi Yu <https://runxiyu.org>
package main
import (
"net/http"
"strconv"
"github.com/go-git/go-git/v5"
"github.com/go-git/go-git/v5/plumbing"
"github.com/go-git/go-git/v5/plumbing/object"
)
func handle_repo_contrib_one(w http.ResponseWriter, r *http.Request, params map[string]any) {
var mr_id_string string
var mr_id int
var err error
var title, status, source_ref, destination_branch string
var repo *git.Repository
var source_ref_hash plumbing.Hash
var source_commit, destination_commit, merge_base *object.Commit
var merge_bases []*object.Commit
mr_id_string = params["mr_id"].(string)
mr_id_int64, err := strconv.ParseInt(mr_id_string, 10, strconv.IntSize)
if err != nil {
http.Error(w, "Merge request ID not an integer: "+err.Error(), http.StatusBadRequest)
return
}
mr_id = int(mr_id_int64)
if err = database.QueryRow(r.Context(),
"SELECT COALESCE(title, ''), status, source_ref, COALESCE(destination_branch, '') FROM merge_requests WHERE id = $1",
mr_id,
).Scan(&title, &status, &source_ref, &destination_branch); err != nil {
http.Error(w, "Error querying merge request: "+err.Error(), http.StatusInternalServerError)
return
}
repo = params["repo"].(*git.Repository)
if source_ref_hash, err = get_ref_hash_from_type_and_name(repo, "branch", source_ref); err != nil {
http.Error(w, "Error getting source ref hash: "+err.Error(), http.StatusInternalServerError)
return
}
if source_commit, err = repo.CommitObject(source_ref_hash); err != nil {
http.Error(w, "Error getting source commit: "+err.Error(), http.StatusInternalServerError)
return
}
params["source_commit"] = source_commit
var destination_branch_hash plumbing.Hash
if destination_branch == "" {
destination_branch = "HEAD"
destination_branch_hash, err = get_ref_hash_from_type_and_name(repo, "", "")
} else {
destination_branch_hash, err = get_ref_hash_from_type_and_name(repo, "branch", destination_branch)
}
if err != nil {
http.Error(w, "Error getting destination branch hash: "+err.Error(), http.StatusInternalServerError)
return
}
if destination_commit, err = repo.CommitObject(destination_branch_hash); err != nil {
http.Error(w, "Error getting destination commit: "+err.Error(), http.StatusInternalServerError)
return
}
params["destination_commit"] = destination_commit
if merge_bases, err = source_commit.MergeBase(destination_commit); err != nil {
http.Error(w, "Error getting merge base: "+err.Error(), http.StatusInternalServerError)
return
}
merge_base = merge_bases[0]
params["merge_base"] = merge_base
patch, err := merge_base.Patch(source_commit)
if err != nil {
http.Error(w, "Error getting patch: "+err.Error(), http.StatusInternalServerError)
return
}
params["file_patches"] = make_usable_file_patches(patch)
params["mr_title"], params["mr_status"], params["mr_source_ref"], params["mr_destination_branch"] = title, status, source_ref, destination_branch
render_template(w, "repo_contrib_one", params)
}
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