sb-backend/src/main/resources/mapper/AccountEntryMapper.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
        "https://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="com.sb.web.account.mapper.AccountEntryMapper">

    <resultMap id="entryResultMap" type="com.sb.web.account.domain.AccountEntry">
        <id property="id" column="id"/>
        <result property="memberId" column="member_id"/>
        <result property="entryDate" column="entry_date"/>
        <result property="type" column="type"/>
        <result property="category" column="category"/>
        <result property="amount" column="amount"/>
        <result property="memo" column="memo"/>
        <result property="walletId" column="wallet_id"/>
        <result property="walletName" column="wallet_name"/>
        <result property="toWalletId" column="to_wallet_id"/>
        <result property="toWalletName" column="to_wallet_name"/>
        <result property="createdAt" column="created_at"/>
        <result property="updatedAt" column="updated_at"/>
    </resultMap>

    <sql id="periodFilter">
        <if test="year != null">AND YEAR(entry_date) = #{year}</if>
        <if test="month != null">AND MONTH(entry_date) = #{month}</if>
    </sql>

    <sql id="entryCols">
        e.id, e.member_id, e.entry_date, e.type, e.category, e.amount, e.memo,
        e.wallet_id, w.name AS wallet_name,
        e.to_wallet_id, tw.name AS to_wallet_name,
        e.created_at, e.updated_at
    </sql>
    <sql id="entryJoins">
        FROM account_entry e
        LEFT JOIN wallet w  ON w.id  = e.wallet_id
        LEFT JOIN wallet tw ON tw.id = e.to_wallet_id
    </sql>

    <select id="findByMember" resultMap="entryResultMap">
        SELECT <include refid="entryCols"/>
        <include refid="entryJoins"/>
        WHERE e.member_id = #{memberId}
        <if test="year != null">AND YEAR(e.entry_date) = #{year}</if>
        <if test="month != null">AND MONTH(e.entry_date) = #{month}</if>
        <if test="type != null and type != ''">AND e.type = #{type}</if>
        <if test="category != null and category != ''">AND e.category = #{category}</if>
        <if test="walletId != null">AND (e.wallet_id = #{walletId} OR e.to_wallet_id = #{walletId})</if>
        <if test="keyword != null and keyword != ''">
            AND (e.memo LIKE CONCAT('%', #{keyword}, '%') OR e.category LIKE CONCAT('%', #{keyword}, '%'))
        </if>
        <if test="tagId != null">
            AND EXISTS (SELECT 1 FROM account_entry_tag aet WHERE aet.entry_id = e.id AND aet.tag_id = #{tagId})
        </if>
        ORDER BY e.entry_date DESC, e.id DESC
    </select>

    <select id="findByWalletAndMember" resultMap="entryResultMap">
        SELECT <include refid="entryCols"/>
        <include refid="entryJoins"/>
        WHERE e.member_id = #{memberId}
          AND (e.wallet_id = #{walletId} OR e.to_wallet_id = #{walletId})
        ORDER BY e.entry_date DESC, e.id DESC
    </select>

    <select id="findByIdAndMember" resultMap="entryResultMap">
        SELECT <include refid="entryCols"/>
        <include refid="entryJoins"/>
        WHERE e.id = #{id} AND e.member_id = #{memberId}
    </select>

    <select id="sumByType" resultType="map">
        SELECT type AS type, COALESCE(SUM(amount), 0) AS total
        FROM account_entry
        WHERE member_id = #{memberId}
        <include refid="periodFilter"/>
        GROUP BY type
    </select>

    <select id="sumExpenseByCategory" resultType="map">
        SELECT COALESCE(category, '') AS category, COALESCE(SUM(amount), 0) AS total
        FROM account_entry
        WHERE member_id = #{memberId} AND type = 'EXPENSE'
        <include refid="periodFilter"/>
        GROUP BY category
    </select>

    <select id="sumByCategory" resultType="map">
        SELECT COALESCE(NULLIF(category, ''), '미분류') AS category, COALESCE(SUM(amount), 0) AS total
        FROM account_entry
        WHERE member_id = #{memberId} AND type = #{type}
        <include refid="periodFilter"/>
        GROUP BY COALESCE(NULLIF(category, ''), '미분류')
        ORDER BY total DESC
    </select>

    <select id="monthlyWalletFlow" resultType="map">
        SELECT DATE_FORMAT(entry_date, '%Y-%m') AS ym,
               COALESCE(SUM(CASE WHEN type = 'INCOME' THEN amount
                                 WHEN type = 'EXPENSE' THEN -amount
                                 ELSE 0 END), 0) AS net
        FROM account_entry
        WHERE member_id = #{memberId} AND wallet_id IS NOT NULL AND type IN ('INCOME', 'EXPENSE')
        GROUP BY ym
        ORDER BY ym
    </select>

    <select id="statsByPeriod" resultType="map">
        SELECT
        <choose>
            <when test="unit == 'DAY'">DAY(entry_date)</when>
            <when test="unit == 'WEEK'">FLOOR((DAY(entry_date) - 1) / 7) + 1</when>
            <when test="unit == 'YEAR'">YEAR(entry_date)</when>
            <otherwise>MONTH(entry_date)</otherwise>
        </choose> AS bucket,
        COALESCE(SUM(CASE WHEN type = 'INCOME'  THEN amount ELSE 0 END), 0) AS income,
        COALESCE(SUM(CASE WHEN type = 'EXPENSE' THEN amount ELSE 0 END), 0) AS expense
        FROM account_entry
        WHERE member_id = #{memberId}
        <if test="unit == 'DAY' or unit == 'WEEK' or unit == 'MONTH'">AND YEAR(entry_date) = #{year}</if>
        <if test="unit == 'DAY' or unit == 'WEEK'">AND MONTH(entry_date) = #{month}</if>
        GROUP BY bucket
        ORDER BY bucket
    </select>

    <insert id="insert" parameterType="com.sb.web.account.domain.AccountEntry"
            useGeneratedKeys="true" keyProperty="id">
        INSERT INTO account_entry (member_id, entry_date, type, category, amount, memo,
                                   wallet_id, to_wallet_id, created_at, updated_at)
        VALUES (#{memberId}, #{entryDate}, #{type}, #{category}, #{amount}, #{memo},
                #{walletId}, #{toWalletId}, NOW(), NOW())
    </insert>

    <update id="update" parameterType="com.sb.web.account.domain.AccountEntry">
        UPDATE account_entry
        SET entry_date = #{entryDate}, type = #{type}, category = #{category},
            amount = #{amount}, memo = #{memo}, wallet_id = #{walletId}, to_wallet_id = #{toWalletId}
        WHERE id = #{id} AND member_id = #{memberId}
    </update>

    <delete id="delete">
        DELETE FROM account_entry WHERE id = #{id} AND member_id = #{memberId}
    </delete>

    <select id="findDistinctCategories" resultType="string">
        SELECT DISTINCT category FROM account_entry
        WHERE member_id = #{memberId} AND type = #{type}
          AND category IS NOT NULL AND category != ''
        ORDER BY category
    </select>

    <update id="renameCategory">
        UPDATE account_entry SET category = #{newName}
        WHERE member_id = #{memberId} AND type = #{type} AND category = #{oldName}
    </update>

    <!-- ===== 항목-태그 ===== -->
    <insert id="insertEntryTag">
        INSERT INTO account_entry_tag (entry_id, tag_id) VALUES (#{entryId}, #{tagId})
    </insert>

    <delete id="deleteEntryTagsByEntryId" parameterType="long">
        DELETE FROM account_entry_tag WHERE entry_id = #{entryId}
    </delete>

    <select id="findTagNamesByEntryId" parameterType="long" resultType="string">
        SELECT t.name
        FROM account_tag t
        JOIN account_entry_tag aet ON aet.tag_id = t.id
        WHERE aet.entry_id = #{entryId}
        ORDER BY t.name
    </select>

</mapper>