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104 lines
3.4 KiB
Go
104 lines
3.4 KiB
Go
// Copyright 2025 The Gitea Authors. All rights reserved.
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// SPDX-License-Identifier: MIT
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package devtest
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import (
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"errors"
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"io/fs"
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"net/http"
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"regexp"
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"strings"
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"gitea.dev/modules/setting"
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"gitea.dev/modules/templates"
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"gitea.dev/modules/util"
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"gitea.dev/services/context"
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"gitea.dev/services/mailer"
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"go.yaml.in/yaml/v4"
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)
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var mailDarkSchemeQuery = regexp.MustCompile(`@media\s*\(\s*prefers-color-scheme\s*:\s*dark\s*\)`)
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func mailPreviewMockData(tmplName string) (map[string]any, error) {
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mockData := map[string]any{}
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mockDataContent, err := templates.AssetFS().ReadFile(tmplName + ".devtest.yml")
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if err != nil {
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if errors.Is(err, fs.ErrNotExist) {
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return mockData, nil
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}
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return nil, err
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}
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return mockData, yaml.Unmarshal(mockDataContent, &mockData)
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}
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func MailPreviewRender(ctx *context.Context) {
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tmplName := ctx.PathParam("*")
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mockData, err := mailPreviewMockData(tmplName)
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if err != nil {
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http.Error(ctx.Resp, "Failed to parse mock data: "+err.Error(), http.StatusInternalServerError)
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return
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}
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mockData["locale"] = ctx.Locale
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var mailBody strings.Builder
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if err := mailer.LoadedTemplates().BodyTemplates.ExecuteTemplate(&mailBody, tmplName, mockData); err != nil {
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http.Error(ctx.Resp, err.Error(), http.StatusInternalServerError)
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return
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}
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body := mailBody.String()
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// emulate mail clients, which resolve "cid:" URIs to the mail's inline attachments
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body = strings.ReplaceAll(body, `src="cid:`, `src="`+setting.AppSubURL+`/devtest/mail-preview-embed/`)
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previewStyle := "body {padding: 12px 16px}"
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// a page can force "color-scheme" on an embedded document but never "prefers-color-scheme"
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if scheme := ctx.FormString("scheme"); scheme == "light" || scheme == "dark" {
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body = mailDarkSchemeQuery.ReplaceAllString(body, util.Iif(scheme == "dark", "@media all", "@media not all"))
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previewStyle += "\n:root {color-scheme: " + scheme + "}"
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}
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body = strings.Replace(body, "</head>", "<style>"+previewStyle+"</style></head>", 1)
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// fragment templates like "mail/base/head" would be sniffed as text/plain otherwise
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ctx.Resp.Header().Set("Content-Type", "text/html; charset=utf-8")
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_, _ = ctx.Resp.Write([]byte(body))
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}
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func MailPreviewEmbed(ctx *context.Context) {
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content, err := mailer.LoadMailIcon(ctx.PathParam("*"))
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if err != nil {
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ctx.NotFound(err)
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return
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}
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ctx.Resp.Header().Set("Content-Type", "image/png")
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_, _ = ctx.Resp.Write(content)
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}
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func prepareMailPreviewRender(ctx *context.Context, tmplName string) {
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subject := "(default subject)"
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if mockData, err := mailPreviewMockData(tmplName); err == nil {
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if mockSubject, ok := mockData["Subject"].(string); ok {
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subject = util.IfZero(mockSubject, subject)
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}
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}
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tmplSubject := mailer.LoadedTemplates().SubjectTemplates.Lookup(tmplName)
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// FIXME: MAIL-TEMPLATE-SUBJECT: only "issue" related messages support using subject from templates
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if tmplSubject != nil {
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var buf strings.Builder
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err := tmplSubject.Execute(&buf, nil)
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if err != nil {
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subject = "ERROR: " + err.Error()
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} else {
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subject = util.IfZero(buf.String(), subject)
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}
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}
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ctx.Data["RenderMailSubject"] = subject
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ctx.Data["RenderMailTemplateName"] = tmplName
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}
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func MailPreview(ctx *context.Context) {
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ctx.Data["MailTemplateNames"] = mailer.LoadedTemplates().TemplateNames
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tmplName := ctx.FormString("tmpl")
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if tmplName != "" {
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prepareMailPreviewRender(ctx, tmplName)
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}
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ctx.HTML(http.StatusOK, "devtest/mail-preview")
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}
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