add simple line break

packages/nuxt/server/db.ts

@@ -47,7 +47,7 @@ export class Database {
       priority      INT,
       -- q.title
       [image]       TEXT,
-      -- q.tag.split(/ /g)
+      -- m2o files_tag
       -- q.category
       -- q.content
       excerptHtml   TEXT NOT NULL,
@@ -58,6 +58,12 @@ export class Database {
     CREATE INDEX IF NOT EXISTS files_createdAt ON files(createdAt);
     CREATE INDEX IF NOT EXISTS files_updatedAt ON files(updatedAt);
     CREATE INDEX IF NOT EXISTS files_priority ON files(priority);
+
+    CREATE TABLE IF NOT EXISTS files_tag (
+      [path]        TEXT NOT NULL,
+      tag           TEXT NOT NULL,
+      PRIMARY KEY ([path], tag)
+    );
     `)
 
     this.db.exec(/* sql */ `
@@ -77,6 +83,11 @@ export class Database {
     VALUES (@path, @date, @createdAt, @updatedAt, @priority, @image, @excerptHtml, @contentHtml)
     `)
 
+    const ftStmt = this.db.prepare(/* sql */ `
+    INSERT INTO files_tag ([path], tag)
+    VALUES (@path, @tag)
+    `)
+
     const qStmt = this.db.prepare(/* sql */ `
     INSERT INTO q ([path], title, tag, category, content)
     VALUES (@path, @title, @tag, @category, @content)
@@ -118,6 +129,15 @@ export class Database {
           content,
           tag: tag ? tag.join(' ') : undefined,
         })
+
+        if (tag) {
+          Array.from(new Set(tag)).map((t) => {
+            ftStmt.run({
+              path,
+              tag: t,
+            })
+          })
+        }
       })
     })()
   }
@@ -130,12 +150,14 @@ export class Database {
       [date],
       title,
       [image],
-      tag,
+      GROUP_CONCAT(ft.tag, ' ')   tag,
       category,
       contentHtml   content
     FROM files f
-    JOIN q ON q.path = f.path
+    JOIN      q             ON q.path = f.path
+    LEFT JOIN files_tag ft  ON ft.path = f.path
     WHERE f.path = @id
+    GROUP BY f.path
     `
       )
       .get({ id })
@@ -163,6 +185,7 @@ export class Database {
     opts: {
       offset: number
       limit: number
+      tag?: string
     }
   ) {
     return this._search(q, {
@@ -171,17 +194,11 @@ export class Database {
     })
   }
 
-  public by(
-    q: string,
-    opts: {
-      offset: number
-      limit: number
-    }
-  ) {
-    return this._search(q, {
+  public by(opts: { tag?: string; offset: number; limit: number }) {
+    return this._search('', {
       ...opts,
       orderedBy: 'priority DESC, [date] DESC, createdAt DESC, updatedAt DESC',
-      where: '[date] IS NOT NULL',
+      where: ['[date] IS NOT NULL'],
     })
   }
 
@@ -191,15 +208,36 @@ export class Database {
       offset: number
       limit: number
       orderedBy: string
-      where?: string
+      tag?: string
+      where?: string[]
     }
   ) {
+    const $where: string[] = []
+    if (q) {
+      $where.push('q = @q')
+    }
+
+    if (opts.tag) {
+      $where.push('ft.tag = @tag')
+    }
+
+    if (opts.where) {
+      $where.push(...opts.where)
+    }
+
     const fromSegment = /* sql */ `
     FROM files f
     JOIN q ON q.path = f.path
-    WHERE ${q ? `q = @q` : 'TRUE'} ${opts.where ? `AND ${opts.where}` : ''}
+    ${opts.tag ? `LEFT JOIN files_tag ft ON ft.path = f.path` : ''}
+    WHERE ${$where.join(' AND ') || 'TRUE'}
+    ${opts.tag ? 'GROUP BY f.path' : ''}
     `
 
+    const cond = {
+      q,
+      tag: opts.tag,
+    }
+
     const count =
       this.db
         .prepare(
@@ -208,7 +246,7 @@ export class Database {
     ${fromSegment}
     `
         )
-        .get({ q })?.count || 0
+        .get(cond)?.count || 0
 
     const result = this.db
       .prepare(
@@ -218,7 +256,6 @@ export class Database {
       [date],
       title,
       [image],
-      tag,
       category,
       excerptHtml   excerpt
     ${fromSegment}
@@ -226,12 +263,11 @@ export class Database {
     LIMIT ${opts.limit} OFFSET ${opts.offset}
     `
       )
-      .all({ q }) as {
+      .all(cond) as {
       path: string
       date?: Date
       title: string
       image?: string
-      tag?: string[]
       category?: string
       excerpt: string
     }[]