fix: 合并请求对比代码返回合并信息

app/controllers/compare_controller.rb

@@ -6,23 +6,45 @@ class CompareController < ApplicationController
   end
 
   def show
+    load_compare_params
     compare
+    @merge_status, @merge_message = get_merge_message
   end
 
   private
+  def get_merge_message 
+    if @base.blank? || @head.blank?
+      return -2, "请选择分支"
+    else
+      if @head.include?(":")
+        fork_project = @project.forked_projects.joins(:owner).where(users: {login: @head.to_s.split("/")[0]}).take
+        return -2, "请选择正确的仓库" unless fork_project.present?
+        @exist_pullrequest = @project.pull_requests.where(is_original: true, head: @head.to_s.split(":")[1], base: @base, status: 0, fork_project_id: fork_project.id).take
+      else 
+        @exist_pullrequest = @project.pull_requests.where(is_original: false, head: @base, base: @head, status: 0).take
+      end
+      if @exist_pullrequest.present?
+        return -2, "在这些分支之间的合并请求已存在：<a href='/projects/#{@owner.login}/#{@project.identifier}/pulls/#{@exist_pullrequest.id}/Messagecount'>#{@exist_pullrequest.try(:title)}</a>"
+      else 
+        if @compare_result["Commits"].blank? && @compare_result["Diff"].blank?
+          return -2, "分支内容相同，无需创建合并请求"
+        end
+      end
+    end
+    return 0, "可以合并"
+  end
+
   def compare
-    base, head = compare_params
 
     # TODO: 处理fork的项目向源项目发送PR的base、head参数问题
     @compare_result ||=
-      head.include?(":") ? gitea_compare(base, head) : gitea_compare(head, base)
+      @head.include?(":") ? gitea_compare(@base, @head) : gitea_compare(@head, @base)
   end
 
-  def compare_params
-    base = Addressable::URI.unescape(params[:base])
-    head = params[:head].include?('json') ? params[:head]&.split('.json')[0] : params[:head]
+  def load_compare_params
+    @base = Addressable::URI.unescape(params[:base])
+    @head = params[:head].include?('json') ? params[:head]&.split('.json')[0] : params[:head]
 
-    [base, head]
   end
 
   def gitea_compare(base, head)

app/views/compare/show.json.jbuilder

@@ -83,3 +83,5 @@ json.diff do
 
   end
 end
+json.status @merge_status
+json.message @merge_message

app/views/repositories/tags.json.jbuilder

@@ -2,8 +2,8 @@ json.array! @tags do |tag|
   if tag.present? 
     json.name tag['name']
     json.id tag['id']
-    json.zipball_url tag['zipball_url']
-    json.tarball_url tag['tarball_url']
+    json.zipball_url render_zip_url(@owner, @repository, tag['name'])
+    json.tarball_url render_tar_url(@owner, @repository, tag['name'])
     json.commit do
       json.sha tag['commit']['sha']
     end

app/views/version_releases/index.json.jbuilder

@@ -14,8 +14,8 @@ json.releases do
         json.name re["name"]
         json.body re["body"]
         json.url re["url"]
-        json.tarball_url re["tarball_url"]
-        json.zipball_url re["zipball_url"]
+        json.tarball_url render_tar_url(@owner, @repository, re["tag_name"])
+        json.zipball_url render_zip_url(@owner, @repository, re["tag_name"])
         json.draft re["draft"] ? "草稿" : (re["prerelease"] ? "预发行" : "稳定")
         json.created_at format_time(version.created_at.to_s.to_time)
         json.published_at format_time(version.created_at.to_s.to_time)
@@ -30,8 +30,8 @@ json.releases do
           json.name re["name"]
           json.body re["body"]
           json.url re["url"]
-          json.tarball_url re["tarball_url"]
-          json.zipball_url re["zipball_url"]
+          json.tarball_url render_tar_url(@owner, @repository, re["tag_name"])
+          json.zipball_url render_zip_url(@owner, @repository, re["tag_name"])
           json.draft re["draft"] ? "草稿" : (re["prerelease"] ? "预发行" : "稳定")
           json.created_at format_time(version.created_at.to_s.to_time)
           json.published_at format_time(version.created_at.to_s.to_time)