From ca4e448828d363aaa705c118e6aace078ae5d3a1 Mon Sep 17 00:00:00 2001
From: Gisle Aune <dev@gisle.me>
Date: Sun, 27 Aug 2017 17:29:11 +0200
Subject: [PATCH] Added LogHeader

---
 logheader.go | 148 +++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 148 insertions(+)
 create mode 100644 logheader.go

diff --git a/logheader.go b/logheader.go
new file mode 100644
index 0000000..8b8a09b
--- /dev/null
+++ b/logheader.go
@@ -0,0 +1,148 @@
+package storage
+
+import (
+	"database/sql"
+	"errors"
+	"strings"
+	"time"
+)
+
+const logHeaderInsert = "INSERT INTO `logheader` (id,channel,time,status,status_time,title,tag,description) VALUES (?, ?, ?, ?, ?, ?, ?, ?);"
+const logHeaderUpdate = "UPDATE `logheader` SET channel=?,time=?,status=?,status_time=?,title=?,tag=?,description=? WHERE id=?;"
+const logNicksInsert = "INSERT INTO `lognicks` (log_id,nick) VALUES (?, ?);"
+const logNicksDelete = "DELETE FROM `lognicks` WHERE log_id=? AND nick=?;"
+
+// LogHeader is the struct
+type LogHeader struct {
+	ID          string    `json:"id"`
+	Channel     string    `json:"channel"`
+	Time        time.Time `json:"time"`
+	Status      string    `json:"status"`
+	StatusTime  time.Time `json:"statusTime"`
+	Title       string    `json:"title"`
+	Tag         string    `json:"tag"`
+	Description string    `json:"description"`
+	Nicks       []string  `json:"nicks"`
+
+	nicksAdded   []string
+	nicksRemoved []string
+}
+
+// SetStatus changes the value of header.Status and updates
+// header.StatusTime.
+func (header *LogHeader) SetStatus(value string) {
+	header.Status = strings.ToLower(value)
+	header.StatusTime = time.Now()
+}
+
+// HasNick returns whether a nick exists
+func (header *LogHeader) HasNick(nick string) bool {
+	for _, existingNick := range header.Nicks {
+		if existingNick == nick {
+			return true
+		}
+	}
+
+	return false
+}
+
+// AddNick adds a nick to the Nicks array, recording the
+// change. If the nick exists, it will not be added, though
+// it won't throw an error.
+func (header *LogHeader) AddNick(nick string) {
+	if !header.HasNick(nick) {
+		header.Nicks = append(header.Nicks, nick)
+		header.nicksAdded = append(header.nicksAdded, nick)
+	}
+}
+
+// RemoveNick removes a nick from the Nicks array, recording
+// the change.
+func (header *LogHeader) RemoveNick(nick string) {
+	for i, existingNick := range header.Nicks {
+		if existingNick == nick {
+			header.Nicks = append(header.Nicks[:i], header.Nicks[i+1:]...)
+			header.nicksRemoved = append(header.nicksRemoved, nick)
+			return
+		}
+	}
+}
+
+// Insert inserts the LogHeader into the database, as well as all nicks
+func (header *LogHeader) Insert(db *sql.DB) error {
+	// Insert the header
+	result, err := db.Exec(logHeaderInsert, header.ID, header.Channel, header.Time, header.Status, header.StatusTime, header.Title, header.Tag, header.Description)
+	if err != nil {
+		return err
+	}
+
+	// Check if it was actually inserted
+	rows, err := result.RowsAffected()
+	if err != nil {
+		return err
+	}
+	if rows != 1 {
+		return errors.New("storage: No LogHeader inserted")
+	}
+
+	// Insert all lognicks
+	for _, nick := range header.Nicks {
+		_, err := db.Exec(logNicksInsert, header.ID, nick)
+		if err != nil {
+			return err
+		}
+	}
+
+	// Clear the nicksAdded and nicksRemoved lists
+	header.nicksAdded = nil
+	header.nicksRemoved = nil
+
+	// Success
+	return nil
+}
+
+// Save updates the logheader
+func (header *LogHeader) Save(db *sql.DB) error {
+	// Insert the header
+	_, err := db.Exec(logHeaderUpdate, header.Channel, header.Time, header.Status, header.StatusTime, header.Title, header.Tag, header.Description, header.ID)
+	if err != nil {
+		return err
+	}
+
+	// Delete all removed lognicks
+	for _, nick := range header.nicksRemoved {
+		_, err := db.Exec(logNicksDelete, header.ID, nick)
+		if err != nil {
+			return err
+		}
+	}
+
+	// Insert all new lognicks
+	for _, nick := range header.nicksAdded {
+		_, err := db.Exec(logNicksInsert, header.ID, nick)
+		if err != nil {
+			return err
+		}
+	}
+
+	// Clear the nicksAdded and nicksRemoved lists
+	header.nicksAdded = nil
+	header.nicksRemoved = nil
+
+	// Success
+	return nil
+}
+
+// NewLogHeader creates a new LogHeader with an ID based the time and channel
+// value. It also sets StatusTime to the current time. It leaves
+// Title, Tag and Nicks blank.
+func NewLogHeader(logTime time.Time, channel, status string) *LogHeader {
+	header := new(LogHeader)
+	header.ID = logTime.Format("2006-01-02_150405999_") + channel[1:]
+	header.Channel = channel
+	header.Time = logTime
+	header.Status = status
+	header.StatusTime = time.Now()
+
+	return header
+}