build up forum features, work in method/func calls in template engine

internal/routes/forum.go

@@ -3,6 +3,7 @@ package routes
 import (
 	"dk/internal/components"
 	"dk/internal/database"
+	"dk/internal/helpers/markdown"
 	"dk/internal/models/forum"
 	"dk/internal/models/users"
 	"fmt"
@@ -12,6 +13,22 @@ import (
 	"git.sharkk.net/Sharkk/Sushi/auth"
 )
 
+// ThreadInfo combines forum thread with author and last reply info
+type ThreadInfo struct {
+	Thread      *forum.Forum
+	Author      *users.User
+	AuthorClass string
+	LastReplyBy *users.User
+}
+
+// PostInfo combines a forum post/reply with its author
+type PostInfo struct {
+	Post        *forum.Forum
+	Author      *users.User
+	AuthorClass string
+	Content     string // Pre-processed markdown content
+}
+
 func RegisterForumRoutes(app *sushi.App) {
 	authed := app.Group("/forum")
 	authed.Use(auth.RequireAuth())
@@ -19,17 +36,66 @@ func RegisterForumRoutes(app *sushi.App) {
 	authed.Get("/new", showNew)
 	authed.Post("/new", new)
 	authed.Get("/:id", showThread)
+	authed.Get("/:id/reply", showReply)
+	authed.Post("/:id/reply", reply)
 }
 
 func index(ctx sushi.Ctx) {
-	threads, err := forum.Threads()
+	page := int(ctx.QueryArgs().GetUintOrZero("page"))
+	if page < 1 {
+		page = 1
+	}
+
+	perPage := 30
+	offset := (page - 1) * perPage
+
+	// Get threads with pagination
+	var threads []*forum.Forum
+	err := database.Select(&threads, "SELECT * FROM forum WHERE parent = 0 ORDER BY last_post DESC, id DESC LIMIT %d OFFSET %d", perPage, offset)
 	if err != nil {
 		threads = make([]*forum.Forum, 0)
 	}
-	fmt.Printf("\nFound %d threads\n", len(threads))
+
+	// Get total count for pagination
+	var totalCount int
+	database.Get(&totalCount, "SELECT COUNT(*) FROM forum WHERE parent = 0")
+
+	// Build thread info with authors and last reply info
+	var threadInfos []ThreadInfo
+	for _, thread := range threads {
+		author, _ := users.Find(thread.Author)
+		if author == nil {
+			author = &users.User{Username: "[Deleted]", ClassID: 1}
+		}
+
+		authorClass := author.Class().Name
+
+		// Get last reply author if there are replies
+		var lastReplyBy *users.User
+		if thread.Replies > 0 {
+			var lastReply forum.Forum
+			err := database.Get(&lastReply, "SELECT * FROM forum WHERE parent = %d ORDER BY posted DESC LIMIT 1", thread.ID)
+			if err == nil {
+				lastReplyBy, _ = users.Find(lastReply.Author)
+			}
+		}
+
+		threadInfos = append(threadInfos, ThreadInfo{
+			Thread:      thread,
+			Author:      author,
+			AuthorClass: authorClass,
+			LastReplyBy: lastReplyBy,
+		})
+	}
+
+	totalPages := (totalCount + perPage - 1) / perPage
 
 	components.RenderPage(ctx, "Forum", "forum/index.html", map[string]any{
-		"threads": threads,
+		"threadInfos": threadInfos,
+		"currentPage": page,
+		"totalPages":  totalPages,
+		"hasNext":     page < totalPages,
+		"hasPrev":     page > 1,
 	})
 }
 
@@ -72,6 +138,10 @@ func new(ctx sushi.Ctx) {
 func showThread(ctx sushi.Ctx) {
 	sess := ctx.GetCurrentSession()
 	id := ctx.Param("id").Int()
+	page := int(ctx.QueryArgs().GetUintOrZero("page"))
+	if page < 1 {
+		page = 1
+	}
 
 	thread, err := forum.Find(id)
 	if err != nil {
@@ -86,7 +156,126 @@ func showThread(ctx sushi.Ctx) {
 		return
 	}
 
+	// Get thread author
+	threadAuthor, _ := users.Find(thread.Author)
+	if threadAuthor == nil {
+		threadAuthor = &users.User{Username: "[Deleted]", Level: 1, ClassID: 1}
+	}
+	threadAuthorClass := threadAuthor.Class().Name
+	threadContent := markdown.MarkdownToHTML(thread.Content)
+
+	// Get replies with pagination
+	perPage := 30
+	offset := (page - 1) * perPage
+
+	var replies []*forum.Forum
+	err = database.Select(&replies, "SELECT * FROM forum WHERE parent = %d ORDER BY posted ASC LIMIT %d OFFSET %d", id, perPage, offset)
+	if err != nil {
+		replies = make([]*forum.Forum, 0)
+	}
+
+	// Build reply info with authors and processed content
+	var replyInfos []PostInfo
+	for _, reply := range replies {
+		author, _ := users.Find(reply.Author)
+		if author == nil {
+			author = &users.User{Username: "[Deleted]", Level: 1, ClassID: 1}
+		}
+		authorClass := author.Class().Name
+		content := markdown.MarkdownToHTML(reply.Content)
+
+		replyInfos = append(replyInfos, PostInfo{
+			Post:        reply,
+			Author:      author,
+			AuthorClass: authorClass,
+			Content:     content,
+		})
+	}
+
+	totalPages := (thread.Replies + perPage - 1) / perPage
+	if totalPages < 1 {
+		totalPages = 1
+	}
+
 	components.RenderPage(ctx, thread.Title, "forum/thread.html", map[string]any{
+		"thread":            thread,
+		"threadContent":     threadContent,
+		"threadAuthor":      threadAuthor,
+		"threadAuthorClass": threadAuthorClass,
+		"replyInfos":        replyInfos,
+		"currentPage":       page,
+		"totalPages":        totalPages,
+		"hasNext":           page < totalPages,
+		"hasPrev":           page > 1,
+	})
+}
+
+func showReply(ctx sushi.Ctx) {
+	sess := ctx.GetCurrentSession()
+	id := ctx.Param("id").Int()
+
+	thread, err := forum.Find(id)
+	if err != nil {
+		sess.SetFlash("error", fmt.Sprintf("Forum thread %d not found", id))
+		ctx.Redirect("/forum")
+		return
+	}
+
+	if thread.Parent != 0 {
+		sess.SetFlash("error", fmt.Sprintf("Forum post %d is not a thread", id))
+		ctx.Redirect("/forum")
+		return
+	}
+
+	components.RenderPage(ctx, "Reply to "+thread.Title, "forum/reply.html", map[string]any{
 		"thread": thread,
 	})
 }
+
+func reply(ctx sushi.Ctx) {
+	sess := ctx.GetCurrentSession()
+	id := ctx.Param("id").Int()
+
+	thread, err := forum.Find(id)
+	if err != nil {
+		sess.SetFlash("error", fmt.Sprintf("Forum thread %d not found", id))
+		ctx.Redirect("/forum")
+		return
+	}
+
+	if thread.Parent != 0 {
+		sess.SetFlash("error", fmt.Sprintf("Forum post %d is not a thread", id))
+		ctx.Redirect("/forum")
+		return
+	}
+
+	content := strings.TrimSpace(ctx.Form("content").String())
+	if content == "" {
+		sess.SetFlash("error", "Reply content cannot be empty")
+		ctx.Redirect(fmt.Sprintf("/forum/%d/reply", id))
+		return
+	}
+
+	user := ctx.GetCurrentUser().(*users.User)
+
+	reply := forum.New()
+	reply.Author = user.ID
+	reply.Parent = thread.ID
+	reply.Title = "Re: " + thread.Title
+	reply.Content = content
+
+	database.Transaction(func() error {
+		if err := reply.Insert(); err != nil {
+			return err
+		}
+
+		// Update thread reply count and last post time
+		thread.IncrementReplies()
+		thread.UpdateLastPost()
+
+		return database.Exec("UPDATE forum SET replies = %d, last_post = %d WHERE id = %d",
+			thread.Replies, thread.LastPost, thread.ID)
+	})
+
+	ctx.Redirect(fmt.Sprintf("/forum/%d", thread.ID))
+}

internal/template/template.go

@@ -6,6 +6,7 @@ import (
 	"reflect"
 	"strconv"
 	"strings"
+	"sync"
 	"time"
 
 	sushi "git.sharkk.net/Sharkk/Sushi"
@@ -19,6 +20,51 @@ type Template struct {
 	cache    *TemplateCache
 }
 
+type TemplateFunc func(args ...any) any
+
+var (
+	funcRegistry = make(map[string]TemplateFunc)
+	funcMutex    sync.RWMutex
+	methodCache  = make(map[string]reflect.Method)
+	cacheMutex   sync.RWMutex
+)
+
+func init() {
+	// Built-in functions
+	RegisterFunc("upper", func(args ...any) any {
+		if len(args) == 0 {
+			return ""
+		}
+		return strings.ToUpper(fmt.Sprintf("%v", args[0]))
+	})
+
+	RegisterFunc("lower", func(args ...any) any {
+		if len(args) == 0 {
+			return ""
+		}
+		return strings.ToLower(fmt.Sprintf("%v", args[0]))
+	})
+
+	RegisterFunc("len", func(args ...any) any {
+		if len(args) == 0 {
+			return 0
+		}
+		rv := reflect.ValueOf(args[0])
+		switch rv.Kind() {
+		case reflect.Slice, reflect.Array, reflect.Map, reflect.String:
+			return rv.Len()
+		default:
+			return 0
+		}
+	})
+}
+
+func RegisterFunc(name string, fn TemplateFunc) {
+	funcMutex.Lock()
+	defer funcMutex.Unlock()
+	funcRegistry[name] = fn
+}
+
 func (t *Template) RenderPositional(args ...any) string {
 	result := t.content
 	for i, arg := range args {
@@ -342,12 +388,7 @@ func (t *Template) processConditionals(content string, data map[string]any) stri
 func (t *Template) processVariables(content string, data map[string]any) string {
 	result := content
 
-	// Process simple variables
-	for key, value := range data {
-		result = strings.ReplaceAll(result, fmt.Sprintf("{%s}", key), fmt.Sprintf("%v", value))
-	}
-
-	// Process dot notation
+	// Process function calls and complex expressions first
 	start := 0
 	for {
 		startIdx := strings.Index(result[start:], "{")
@@ -364,6 +405,17 @@ func (t *Template) processVariables(content string, data map[string]any) string
 
 		placeholder := result[startIdx+1 : endIdx]
 
+		// Check for function calls
+		if parenIdx := strings.Index(placeholder, "("); parenIdx != -1 && strings.HasSuffix(placeholder, ")") {
+			value := t.callFunction(placeholder, data)
+			if value != nil {
+				result = result[:startIdx] + fmt.Sprintf("%v", value) + result[endIdx+1:]
+				start = startIdx + len(fmt.Sprintf("%v", value))
+				continue
+			}
+		}
+
+		// Check for method calls or dot notation
 		if strings.Contains(placeholder, ".") {
 			value := t.getNestedValue(data, placeholder)
 			if value != nil {
@@ -373,12 +425,186 @@ func (t *Template) processVariables(content string, data map[string]any) string
 			}
 		}
 
+		// Simple variable
+		if value, ok := data[placeholder]; ok {
+			result = result[:startIdx] + fmt.Sprintf("%v", value) + result[endIdx+1:]
+			start = startIdx + len(fmt.Sprintf("%v", value))
+			continue
+		}
+
 		start = endIdx + 1
 	}
 
 	return result
 }
 
+func (t *Template) callFunction(expr string, data map[string]any) any {
+	parenIdx := strings.Index(expr, "(")
+	funcName := strings.TrimSpace(expr[:parenIdx])
+	argsStr := strings.TrimSpace(expr[parenIdx+1 : len(expr)-1])
+
+	funcMutex.RLock()
+	fn, exists := funcRegistry[funcName]
+	funcMutex.RUnlock()
+
+	if !exists {
+		return nil
+	}
+
+	args := t.parseArgs(argsStr, data)
+	return fn(args...)
+}
+
+func (t *Template) callMethod(obj any, methodCall string, data map[string]any) any {
+	if obj == nil {
+		return nil
+	}
+
+	parenIdx := strings.Index(methodCall, "(")
+	methodName := methodCall[:parenIdx]
+	argsStr := methodCall[parenIdx+1 : len(methodCall)-1]
+
+	rv := reflect.ValueOf(obj)
+	objType := rv.Type()
+
+	// Check method cache
+	cacheKey := fmt.Sprintf("%s.%s", objType.String(), methodName)
+	cacheMutex.RLock()
+	method, cached := methodCache[cacheKey]
+	cacheMutex.RUnlock()
+
+	if !cached {
+		method = rv.MethodByName(methodName)
+		if !method.IsValid() {
+			return nil
+		}
+
+		cacheMutex.Lock()
+		methodCache[cacheKey] = method
+		cacheMutex.Unlock()
+	}
+
+	args := t.parseArgs(argsStr, data)
+	methodType := method.Type()
+
+	// Convert arguments to match method signature
+	reflectArgs := make([]reflect.Value, len(args))
+	for i, arg := range args {
+		if i < methodType.NumIn() {
+			reflectArgs[i] = t.convertArg(arg, methodType.In(i))
+		} else {
+			reflectArgs[i] = reflect.ValueOf(arg)
+		}
+	}
+
+	// Handle variadic methods
+	if methodType.IsVariadic() && len(reflectArgs) >= methodType.NumIn()-1 {
+		result := method.CallSlice(reflectArgs)
+		if len(result) > 0 {
+			return result[0].Interface()
+		}
+	} else if len(reflectArgs) == methodType.NumIn() {
+		result := method.Call(reflectArgs)
+		if len(result) > 0 {
+			return result[0].Interface()
+		}
+	}
+
+	return nil
+}
+
+func (t *Template) parseArgs(argsStr string, data map[string]any) []any {
+	if argsStr == "" {
+		return nil
+	}
+
+	args := []any{}
+	current := ""
+	inQuotes := false
+	parenLevel := 0
+
+	for i, r := range argsStr {
+		switch r {
+		case '"':
+			inQuotes = !inQuotes
+			current += string(r)
+		case '(':
+			parenLevel++
+			current += string(r)
+		case ')':
+			parenLevel--
+			current += string(r)
+		case ',':
+			if !inQuotes && parenLevel == 0 {
+				args = append(args, t.parseArgValue(strings.TrimSpace(current), data))
+				current = ""
+				continue
+			}
+			current += string(r)
+		default:
+			current += string(r)
+		}
+	}
+
+	if current != "" {
+		args = append(args, t.parseArgValue(strings.TrimSpace(current), data))
+	}
+
+	return args
+}
+
+func (t *Template) parseArgValue(arg string, data map[string]any) any {
+	arg = strings.TrimSpace(arg)
+
+	// String literal
+	if strings.HasPrefix(arg, "\"") && strings.HasSuffix(arg, "\"") {
+		return arg[1 : len(arg)-1]
+	}
+
+	// Number
+	if num, err := strconv.ParseFloat(arg, 64); err == nil {
+		if strings.Contains(arg, ".") {
+			return num
+		}
+		return int(num)
+	}
+
+	// Boolean
+	if arg == "true" {
+		return true
+	}
+	if arg == "false" {
+		return false
+	}
+
+	// Function call
+	if parenIdx := strings.Index(arg, "("); parenIdx != -1 && strings.HasSuffix(arg, ")") {
+		return t.callFunction(arg, data)
+	}
+
+	// Variable or dot notation
+	if strings.Contains(arg, ".") {
+		return t.getNestedValue(data, arg)
+	}
+
+	// Simple variable
+	if value, ok := data[arg]; ok {
+		return value
+	}
+
+	return arg
+}
+
+func (t *Template) convertArg(arg any, targetType reflect.Type) reflect.Value {
+	argValue := reflect.ValueOf(arg)
+
+	if argValue.Type().ConvertibleTo(targetType) {
+		return argValue.Convert(targetType)
+	}
+
+	return argValue
+}
+
 func (t *Template) findMatchingEnd(content, startTag, endTag string) int {
 	level := 1
 	pos := 0
@@ -456,6 +682,11 @@ func (t *Template) getNestedValue(data map[string]any, path string) any {
 	var current any = data
 
 	for i, key := range keys {
+		// Check for method call
+		if strings.Contains(key, "(") && strings.HasSuffix(key, ")") {
+			return t.callMethod(current, key, data)
+		}
+
 		if i == len(keys)-1 {
 			switch v := current.(type) {
 			case map[string]any:
@@ -584,6 +815,11 @@ func (t *Template) getConditionValue(expr string, data map[string]any) any {
 		return expr[1 : len(expr)-1]
 	}
 
+	// Function call
+	if parenIdx := strings.Index(expr, "("); parenIdx != -1 && strings.HasSuffix(expr, ")") {
+		return t.callFunction(expr, data)
+	}
+
 	if strings.Contains(expr, ".") {
 		return t.getNestedValue(data, expr)
 	}

templates/forum/index.html

@@ -3,25 +3,64 @@
 {block "content"}
 <div class="thread-title mb-05">
 	<h2>Forum</h2>
-
 	<div>
 		<a href="/forum/new"><button class="btn btn-primary">New Thread</button></a>
 	</div>
 </div>
 
-
-{if #threads > 0}
-<table>
+{if #threadInfos > 0}
+<table style="width: 100%; border-collapse: collapse;">
+	<thead>
+		<tr style="background-color: #f5f5f5;">
+			<th style="padding: 10px; text-align: left; border-bottom: 1px solid #ddd;">Thread</th>
+			<th style="padding: 10px; text-align: center; border-bottom: 1px solid #ddd; width: 100px;">Replies</th>
+			<th style="padding: 10px; text-align: left; border-bottom: 1px solid #ddd; width: 200px;">Last Reply</th>
+		</tr>
+	</thead>
 	<tbody>
-		{for thread in threads}
-			<tr>
-				<td><a href="/forum/{thread.ID}">{thread.Title}</a></td>
-				<td>{thread.Replies} Replies</td>
+		{for threadInfo in threadInfos}
+			<tr style="border-bottom: 1px solid #eee;">
+				<td style="padding: 10px;">
+					<div style="font-weight: bold; margin-bottom: 5px;">
+						<a href="/forum/{threadInfo.Thread.ID}" style="text-decoration: none; color: #333;">{threadInfo.Thread.Title}</a>
+					</div>
+					<div style="font-size: 12px; color: #666;">
+						by {threadInfo.Author.Username} • {threadInfo.PostedTime}
+					</div>
+				</td>
+				<td style="padding: 10px; text-align: center;">
+					{threadInfo.Thread.Replies}
+				</td>
+				<td style="padding: 10px; font-size: 12px; color: #666;">
+					{if threadInfo.LastReplyBy}
+						by {threadInfo.LastReplyBy.Username}<br>
+						{threadInfo.LastPostTime}
+					{else}
+						No replies
+					{/if}
+				</td>
 			</tr>
 		{/for}
 	</tbody>
 </table>
+
+{if totalPages > 1}
+<div style="margin-top: 20px; text-align: center;">
+	{if hasPrev}
+		<a href="/forum?page={currentPage - 1}"><button class="btn">Previous</button></a>
+	{/if}
+
+	<span style="margin: 0 10px;">Page {currentPage} of {totalPages}</span>
+
+	{if hasNext}
+		<a href="/forum?page={currentPage + 1}"><button class="btn">Next</button></a>
+	{/if}
+</div>
+{/if}
+
 {else}
-No threads!
+<div style="text-align: center; padding: 40px; color: #666;">
+	No threads yet. <a href="/forum/new">Create the first one!</a>
+</div>
 {/if}
 {/block}

templates/forum/reply.html

@@ -0,0 +1,18 @@
+{include "layout.html"}
+
+{block "content"}
+<h2 class="mb-1">Reply to: {thread.Title}</h2>
+
+<form action="/forum/{thread.ID}/reply" method="post" class="standard">
+	{csrf}
+
+	<div class="mb-1">
+		<textarea class="forum-text w-full" placeholder="Type your reply here!" name="content" rows="10"></textarea>
+	</div>
+
+	<div>
+		<button type="submit" class="btn btn-primary">Reply</button>
+		<a href="/forum/{thread.ID}"><button class="btn">Back</button></a>
+	</div>
+</form>
+{/block}

templates/forum/thread.html

@@ -3,15 +3,71 @@
 {block "content"}
 <div class="thread-title mb-05">
 	<h2>{thread.Title}</h2>
-
 	<div>
 		<a href="/forum"><button class="btn">Back</button></a>
 		<a href="/forum/{thread.ID}/reply"><button class="btn btn-primary">Reply</button></a>
 	</div>
 </div>
 
+<!-- Original Thread Post -->
+<div style="display: flex; border: 1px solid #ddd; margin-bottom: 20px; background-color: #fafafa;">
+	<div style="width: 150px; padding: 15px; background-color: #f5f5f5; border-right: 1px solid #ddd;">
+		<div style="font-weight: bold; color: #333;">{threadAuthor.Username}</div>
+		<div style="font-size: 12px; color: #666; margin-top: 5px;">
+			Level {threadAuthor.Level}<br>
+			{threadAuthorClass}
+		</div>
+	</div>
+	<div style="flex: 1; padding: 15px;">
+		<div style="margin-bottom: 10px;">
+			{threadContent}
+		</div>
+		<div style="font-size: 11px; color: #888; border-top: 1px solid #eee; padding-top: 10px; margin-top: 10px;">
+			Posted: {threadPostedTime}
+		</div>
+	</div>
+</div>
 
-<p>
-	{thread.Content}
-</p>
+<!-- Replies -->
+{if #replyInfos > 0}
+{for replyInfo in replyInfos}
+<div style="display: flex; border: 1px solid #ddd; margin-bottom: 10px;">
+	<div style="width: 150px; padding: 15px; background-color: #f9f9f9; border-right: 1px solid #ddd;">
+		<div style="font-weight: bold; color: #333;">{replyInfo.Author.Username}</div>
+		<div style="font-size: 12px; color: #666; margin-top: 5px;">
+			Level {replyInfo.Author.Level}<br>
+			{replyInfo.AuthorClass}
+		</div>
+	</div>
+	<div style="flex: 1; padding: 15px;">
+		<div style="margin-bottom: 10px;">
+			{replyInfo.Content}
+		</div>
+		<div style="font-size: 11px; color: #888; border-top: 1px solid #eee; padding-top: 10px; margin-top: 10px;">
+			Posted: {replyInfo.PostedTime}
+		</div>
+	</div>
+</div>
+{/for}
+{/if}
+
+<!-- Pagination -->
+{if totalPages > 1}
+<div style="margin-top: 20px; text-align: center;">
+	{if hasPrev}
+		<a href="/forum/{thread.ID}?page={currentPage - 1}"><button class="btn">Previous</button></a>
+	{/if}
+
+	<span style="margin: 0 10px;">Page {currentPage} of {totalPages}</span>
+
+	{if hasNext}
+		<a href="/forum/{thread.ID}?page={currentPage + 1}"><button class="btn">Next</button></a>
+	{/if}
+</div>
+{/if}
+
+<!-- Reply Button at Bottom -->
+<div style="margin-top: 20px; text-align: center;">
+	<a href="/forum/{thread.ID}/reply"><button class="btn btn-primary">Reply to Thread</button></a>
+</div>
 {/block}