From d9ab9934c0d776683dd15b9ae1917e622ebf3f36 Mon Sep 17 00:00:00 2001
From: theorose49 <theorose49@snu.ac.kr>
Date: Tue, 30 Jun 2026 15:50:11 +0900
Subject: [PATCH] =?UTF-8?q?feat(mail):=20=EB=B3=B8=EB=AC=B8=20HTML=20?=
 =?UTF-8?q?=EC=9A=B0=EC=84=A0(=EB=A9=94=EC=9D=BC=EC=95=B1=EC=B2=98?=
 =?UTF-8?q?=EB=9F=BC)=20+=20=EC=8A=A4=EB=A0=88=EB=93=9C=20=EC=88=9C?=
 =?UTF-8?q?=EB=B2=88(threadIndex/Count)=20=EC=A0=9C=EA=B3=B5?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

- GetFull: text/plain 대신 text/html 우선 → 서식 있는 본문 렌더
- handleListProjectMails: 스레드별 ts 정렬 순번 계산해 threadIndex(1=원문)/threadCount 반환

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
---
 internal/httpapi/handlers_projects.go | 24 +++++++++++++++++++++++-
 internal/mailsync/mailsync.go         |  7 ++++---
 2 files changed, 27 insertions(+), 4 deletions(-)

diff --git a/internal/httpapi/handlers_projects.go b/internal/httpapi/handlers_projects.go
index f0bb186..5c93cbf 100644
--- a/internal/httpapi/handlers_projects.go
+++ b/internal/httpapi/handlers_projects.go
@@ -6,6 +6,7 @@ import (
 	"fmt"
 	"net/http"
 	"net/url"
+	"sort"
 	"strings"
 	"time"
 
@@ -569,6 +570,8 @@ type mailItem struct {
 	models.ProjectMailMsg
 	Note         string `json:"note"`         // 공동 메모 본문
 	NoteEditedBy string `json:"noteEditedBy"` // 메모 마지막 수정자
+	ThreadIndex  int    `json:"threadIndex"`  // 스레드 내 순번(1=원문)
+	ThreadCount  int    `json:"threadCount"`  // 스레드 총 메일 수
 }
 
 // handleListProjectMails returns the stored client-domain mail for the project,
@@ -623,6 +626,25 @@ func (s *Server) handleListProjectMails(w http.ResponseWriter, r *http.Request)
 		notes[n.MessageID] = n
 	}
 	me := s.email(r)
+	// 스레드 내 순번 계산(저장된 전체 메일 기준, ts 오름차순). 1=원문.
+	type tpos struct{ idx, cnt int }
+	byThread := map[string][]models.ProjectMailMsg{}
+	for _, row := range rows {
+		byThread[row.ThreadID] = append(byThread[row.ThreadID], row)
+	}
+	pos := map[string]tpos{}
+	for tid, group := range byThread {
+		if tid == "" {
+			for _, g := range group {
+				pos[g.MessageID] = tpos{1, 1}
+			}
+			continue
+		}
+		sort.Slice(group, func(i, j int) bool { return group[i].TS < group[j].TS })
+		for i, g := range group {
+			pos[g.MessageID] = tpos{i + 1, len(group)}
+		}
+	}
 	// 가시성: 단일 메일 기준 — 그 메일의 from/to/cc에 내가 있으면 보인다(답장도 각각 개별 판정).
 	items := make([]mailItem, 0, len(rows))
 	for _, row := range rows {
@@ -630,7 +652,7 @@ func (s *Server) handleListProjectMails(w http.ResponseWriter, r *http.Request)
 		if !m.Involves(me) {
 			continue
 		}
-		it := mailItem{ProjectMailMsg: row}
+		it := mailItem{ProjectMailMsg: row, ThreadIndex: pos[row.MessageID].idx, ThreadCount: pos[row.MessageID].cnt}
 		if n, ok := notes[row.MessageID]; ok {
 			it.Note = n.Body
 			it.NoteEditedBy = n.LastEditedBy
diff --git a/internal/mailsync/mailsync.go b/internal/mailsync/mailsync.go
index f3a7d93..df857b2 100644
--- a/internal/mailsync/mailsync.go
+++ b/internal/mailsync/mailsync.go
@@ -364,11 +364,12 @@ func (s *Service) GetFull(ctx context.Context, mailbox, rfc822 string) (FullMess
 	}
 	walk(out.Payload)
 	fm := FullMessage{GmailID: gid, Attachments: atts}
-	if plain != "" {
-		fm.Body = plain
-	} else {
+	// 메일앱처럼 보이도록 HTML 본문 우선, 없으면 텍스트.
+	if html != "" {
 		fm.Body = html
 		fm.IsHTML = true
+	} else {
+		fm.Body = plain
 	}
 	return fm, nil
 }