From 0e2cc42a419fe82ea098009b1b841bc847f5c20f Mon Sep 17 00:00:00 2001
From: Peanut <peanut_hzm@163.com>
Date: Sun, 28 Jun 2026 16:50:31 +0800
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---
 .../V20260628__script_dialogue_relation.sql   | 45 +++++++++++++++++++
 1 file changed, 45 insertions(+)
 create mode 100644 server/src/main/resources/db/migration/V20260628__script_dialogue_relation.sql

diff --git a/server/src/main/resources/db/migration/V20260628__script_dialogue_relation.sql b/server/src/main/resources/db/migration/V20260628__script_dialogue_relation.sql
new file mode 100644
index 0000000..c6d2854
--- /dev/null
+++ b/server/src/main/resources/db/migration/V20260628__script_dialogue_relation.sql
@@ -0,0 +1,45 @@
+-- 剧本表新增对话关联字段
+ALTER TABLE t_epic_script
+  ADD COLUMN conversation_id VARCHAR(64) DEFAULT NULL COMMENT '关联对话ID',
+  ADD COLUMN current_version_message_id VARCHAR(64) DEFAULT NULL COMMENT '当前生效版本消息ID',
+  ADD UNIQUE KEY uk_user_conversation (user_id, conversation_id),
+  ADD KEY idx_conversation_id (conversation_id);
+
+-- 对话表新增剧本关联字段
+ALTER TABLE t_conversation
+  ADD COLUMN script_id VARCHAR(64) DEFAULT NULL COMMENT '关联剧本ID',
+  ADD COLUMN current_message_id VARCHAR(64) DEFAULT NULL COMMENT '当前生效的剧本消息ID',
+  ADD KEY idx_script_id (script_id),
+  ADD KEY idx_user_type (user_id, type);
+
+-- 消息表新增剧本关联和版本字段
+ALTER TABLE t_message
+  ADD COLUMN script_id VARCHAR(64) DEFAULT NULL COMMENT '关联剧本ID（冗余字段）',
+  ADD COLUMN version_number INT DEFAULT 0 COMMENT '版本序号（同一parent_message_id下递增）',
+  ADD KEY idx_script_id (script_id),
+  ADD KEY idx_parent_message_id (parent_message_id);
+
+-- 注意：type、metadata 字段已存在，无需新增
+
+-- 历史数据回填：根据 plot_json 中的 conversationId 回填 t_epic_script.conversation_id
+UPDATE t_epic_script s
+  LEFT JOIN t_conversation c ON c.id = JSON_UNQUOTE(JSON_EXTRACT(s.plot_json, '$.conversationId'))
+SET s.conversation_id = c.id
+WHERE s.conversation_id IS NULL
+  AND JSON_UNQUOTE(JSON_EXTRACT(s.plot_json, '$.conversationId')) IS NOT NULL;
+
+-- 历史数据回填：根据 conversation_id 回填 t_conversation.script_id
+UPDATE t_conversation c
+  JOIN t_epic_script s ON s.conversation_id = c.id
+SET c.script_id = s.id
+WHERE c.script_id IS NULL;
+
+-- 历史消息回填 script_id 和 type
+UPDATE t_message m
+  JOIN t_conversation c ON c.id = m.conversation_id
+  SET m.script_id = c.script_id
+WHERE c.script_id IS NOT NULL;
+
+UPDATE t_message
+SET type = 'chat'
+WHERE type IS NULL OR type = '';