Add terraform state registry (#36710)

Adds terraform/opentofu state registry with locking. Implements: https://github.com/go-gitea/gitea/issues/33644. I also checked [encrypted state](https://opentofu.org/docs/language/state/encryption), it works out of the box.

Docs PR: https://gitea.com/gitea/docs/pulls/357

---------

Co-authored-by: Andras Elso <elso.andras@gmail.com>
Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
Co-authored-by: wxiaoguang <wxiaoguang@gmail.com>

templates/package/content/terraform.tmpl

@@ -0,0 +1,26 @@
+{{if eq .PackageDescriptor.Package.Type "terraform"}}
+	<h4 class="ui top attached header">{{ctx.Locale.Tr "packages.installation"}}</h4>
+	<div class="ui attached segment">
+		<div class="ui form">
+			<div class="field">
+				<label>{{svg "octicon-code"}} {{ctx.Locale.Tr "packages.terraform.install"}}</label>
+				<div class="markup"><pre class="code-block"><code>terraform {
+	backend "http" {
+		address = "{{ctx.AppFullLink}}/api/packages/{{$.PackageDescriptor.Owner.Name}}/terraform/state/{{$.PackageDescriptor.Package.Name}}""
+		lock_address = "{{ctx.AppFullLink}}/api/packages/{{$.PackageDescriptor.Owner.Name}}/terraform/state/{{$.PackageDescriptor.Package.Name}}/lock"
+		unlock_address = "{{ctx.AppFullLink}}/api/packages/{{$.PackageDescriptor.Owner.Name}}/terraform/state/{{$.PackageDescriptor.Package.Name}}/lock"
+		lock_method = "POST"
+		unlock_method = "DELETE"
+	}
+}</code></pre></div>
+			</div>
+			<div class="field">
+				<label>{{svg "octicon-terminal"}} {{ctx.Locale.Tr "packages.terraform.install2"}}</label>
+				<div class="markup"><pre class="code-block"><code>terraform init -migrate-state</code></pre></div>
+			</div>
+			<div class="field">
+				<label>{{ctx.Locale.Tr "packages.registry.documentation" "Terraform" "https://docs.gitea.com/usage/packages/terraform"}}</label>
+			</div>
+		</div>
+	</div>
+{{end}}

templates/package/metadata/terraform.tmpl

@@ -0,0 +1,41 @@
+{{if eq .PackageDescriptor.Package.Type "terraform"}}
+	{{$data := $.PackageVersionViewData}}
+	{{if $data.IsLatestVersion}}
+		<div class="divider"></div>
+		<div class="item tw-flex tw-flex-col tw-gap-2">
+			<div>
+				<strong>{{ctx.Locale.Tr "packages.terraform.lock_status"}}</strong>
+			</div>
+			<div>
+				{{if $data.TerraformLock}}
+					<div class="flex-text-block">
+						{{svg "octicon-lock" 16 "tw-text-red"}}
+						<span>{{ctx.Locale.Tr "packages.terraform.locked_by" $data.TerraformLock.Who}}</span>
+					</div>
+					<div class="tw-text-xs tw-ml-6 tw-break-anywhere">
+						{{DateUtils.TimeSince $data.TerraformLock.Created}} ({{$data.TerraformLock.Operation}})
+					</div>
+					{{if .CanWritePackages}}
+						<div>
+							<form action="{{.PackageDescriptor.VersionWebLink}}/terraform/unlock" method="post">
+								<button class="ui tiny button tw-w-full">{{ctx.Locale.Tr "packages.terraform.unlock"}}</button>
+							</form>
+						</div>
+					{{end}}
+				{{else}}
+					<div class="flex-text-block">
+						{{svg "octicon-unlock" 16 "tw-text-green"}}
+						<span>{{ctx.Locale.Tr "packages.terraform.unlocked"}}</span>
+					</div>
+					{{if .CanWritePackages}}
+						<div>
+							<form action="{{.PackageDescriptor.VersionWebLink}}/terraform/lock" method="post">
+								<button class="ui tiny button tw-w-full">{{ctx.Locale.Tr "packages.terraform.lock"}}</button>
+							</form>
+						</div>
+					{{end}}
+				{{end}}
+			</div>
+		</div>
+	{{end}}
+{{end}}

templates/package/shared/view.tmpl

@@ -33,6 +33,7 @@
 		{{template "package/content/rpm" .}}
 		{{template "package/content/rubygems" .}}
 		{{template "package/content/swift" .}}
+		{{template "package/content/terraform" .}}
 		{{template "package/content/vagrant" .}}
 	</div>
 	<div class="ui segment packages-content-right">
@@ -64,6 +65,7 @@
 			{{template "package/metadata/rpm" .}}
 			{{template "package/metadata/rubygems" .}}
 			{{template "package/metadata/swift" .}}
+			{{template "package/metadata/terraform" .}}
 			{{template "package/metadata/vagrant" .}}
 			{{if not (and (eq .PackageDescriptor.Package.Type "container") .PackageDescriptor.Metadata.Manifests)}}
 			<div class="item">{{svg "octicon-database"}} {{FileSize .PackageDescriptor.CalculateBlobSize}}</div>

templates/package/view.tmpl

@@ -3,12 +3,14 @@
 <div role="main" aria-label="{{.Title}}" class="page-content organization packages">
 	{{template "org/header" .}}
 	<div class="ui container">
+		{{template "base/alert" .}}
 		{{template "package/shared/view" .}}
 	</div>
 </div>
 {{else}}
 <div role="main" aria-label="{{.Title}}" class="page-content user profile packages">
 	<div class="ui container">
+		{{template "base/alert" .}}
 		<div class="ui stackable grid">
 			<div class="ui four wide column">
 				{{template "shared/user/profile_big_avatar" .}}

templates/swagger/v1_json.tmpl

@@ -3835,6 +3835,7 @@
               "rpm",
               "rubygems",
               "swift",
+              "terraform",
               "vagrant"
             ],
             "type": "string",