log search implementation

log/log.go

@@ -15,6 +15,7 @@ type (
 
     Log struct {
         ID string `json:"id" db:"id"`
+        Level LogLevel `json:"level" db:"level"`
         Type string `json:"type" db:"type"`
         Content string `json:"content" db:"content"`
         CreatedAt time.Time `json:"created_at" db:"created_at"`
@@ -35,6 +36,8 @@ const (
     LEVEL_WARN LogLevel = 1
 )
 
+const DEFAULT_LOG_PAGE_LENGTH = 25
+
 func (self *Logger) Info(logType string, format string, args ...any) {
     logString := fmt.Sprintf(format, args...)
     fmt.Printf("[%s] INFO: %s", logType, logString)
@@ -58,21 +61,61 @@ func (self *Logger) Fatal(logType string, format string, args ...any) {
     // we won't need to push fatal logs to DB, as these usually precede a panic or crash
 }
 
-func (self *Logger) Fetch(id string) *Log {
-    // TODO: log fetch
-    return nil
+func (self *Logger) Fetch(id string) (*Log, error) {
+    log := Log{}
+    err := self.DB.Get(&log, "SELECT * FROM auditlog WHERE id=$1", id)
+    return &log, err
 }
 
-func (self *Logger) Search(typeFilters []string, content string, offset int, limit int) []Log {
-    // TODO: log search
-    return []Log{}
-}
+func (self *Logger) Search(levelFilters []LogLevel, typeFilters []string, content string, offset int, limit int) ([]*Log, error) {
+    logs := []*Log{}
 
-func (self *Logger) Delete(id string) error {
-    // TODO: log deletion
-    // consider: logging the deletion of logs?
-    //           or just not deleting logs at all
-    return nil
+    params := []any{ limit, offset }
+    conditions := ""
+
+    if len(content) > 0 {
+      content = "%" + content + "%"
+      conditions += " WHERE content LIKE $3"
+      params = append(params, content)
+    }
+
+    if len(levelFilters) > 0 {
+        conditions += " AND level IN ("
+        for i := range levelFilters {
+            conditions += fmt.Sprintf("$%d", len(params) + 1)
+            if i < len(levelFilters) - 1 {
+                conditions += ","
+            }
+            params = append(params, levelFilters[i])
+        }
+        conditions += ")"
+    }
+
+    if len(typeFilters) > 0 {
+        conditions += " AND type IN ("
+        for i := range typeFilters {
+            conditions += fmt.Sprintf("$%d", len(params) + 1)
+            if i < len(typeFilters) - 1 {
+                conditions += ","
+            }
+            params = append(params, typeFilters[i])
+        }
+        conditions += ")"
+    }
+
+    query := fmt.Sprintf(
+        "SELECT * FROM auditlog%s ORDER BY created_at DESC LIMIT $1 OFFSET $2",
+        conditions,
+    )
+
+    // TODO: remove after testing
+    fmt.Println(query)
+
+    err := self.DB.Select(&logs, query, params...)
+    if err != nil {
+        return nil, err
+    }
+    return logs, nil
 }
 
 func createLog(db *sqlx.DB, logLevel LogLevel, logType string, content string) error {

main.go

@@ -3,7 +3,7 @@ package main
 import (
 	"errors"
 	"fmt"
-	"log"
+	stdLog "log"
 	"math"
 	"math/rand"
 	"net/http"
@@ -20,6 +20,7 @@ import (
 	"arimelody-web/model"
 	"arimelody-web/templates"
 	"arimelody-web/view"
+  "arimelody-web/log"
 
 	"github.com/jmoiron/sqlx"
 	_ "github.com/lib/pq"
@@ -342,6 +343,18 @@ func main() {
             fmt.Printf("Account \"%s\" deleted successfully.\n", account.Username)
             return
 
+        case "testLogSearch":
+            // TODO: rename to "logs"; add parameters
+            logger := log.Logger { DB: app.DB }
+            logs, err := logger.Search([]log.LogLevel{ log.LEVEL_INFO, log.LEVEL_WARN }, []string{ log.TYPE_ACCOUNT, log.TYPE_MUSIC }, "ari", 0, 100)
+            if err != nil {
+                fmt.Fprintf(os.Stderr, "FATAL: Failed to fetch logs: %v\n", err)
+                os.Exit(1)
+            }
+            for _, log := range(logs) {
+                fmt.Printf("[%s] [%s] [%d] [%s] %s\n", log.CreatedAt.Format(time.UnixDate), log.ID, log.Level, log.Type, log.Content)
+            }
+            return
         }
 
         // command help
@@ -401,7 +414,7 @@ func main() {
     // start the web server!
     mux := createServeMux(&app)
     fmt.Printf("Now serving at http://%s:%d\n", app.Config.Host, app.Config.Port)
-    log.Fatal(
+    stdLog.Fatal(
         http.ListenAndServe(fmt.Sprintf("%s:%d", app.Config.Host, app.Config.Port), 
         HTTPLog(DefaultHeaders(mux)),
     ))