553 lines
17 KiB
Go
553 lines
17 KiB
Go
package handlers
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import (
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"database/sql"
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"encoding/json"
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"math"
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"net/http"
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"strconv"
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"strings"
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"github.com/gin-gonic/gin"
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"github.com/lib/pq"
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"git.gobha.me/xcaliber/chat-switchboard/database"
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"git.gobha.me/xcaliber/chat-switchboard/store"
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)
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// ── Request / Response types ────────────────
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type createChannelRequest struct {
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Title string `json:"title" binding:"required,max=500"`
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Type string `json:"type,omitempty"` // direct (default), group, channel
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Description string `json:"description,omitempty"`
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Model string `json:"model,omitempty"`
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SystemPrompt string `json:"system_prompt,omitempty"`
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ProviderConfigID *string `json:"provider_config_id,omitempty"`
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Folder string `json:"folder,omitempty"`
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Tags []string `json:"tags,omitempty"`
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}
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type updateChannelRequest struct {
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Title *string `json:"title,omitempty"`
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Description *string `json:"description,omitempty"`
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Model *string `json:"model,omitempty"`
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SystemPrompt *string `json:"system_prompt,omitempty"`
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ProviderConfigID *string `json:"provider_config_id,omitempty"`
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IsArchived *bool `json:"is_archived,omitempty"`
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IsPinned *bool `json:"is_pinned,omitempty"`
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Folder *string `json:"folder,omitempty"`
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Tags []string `json:"tags,omitempty"`
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Settings *json.RawMessage `json:"settings,omitempty"` // JSONB merge into existing settings
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WorkspaceID *string `json:"workspace_id,omitempty"` // bind workspace (v0.21.5)
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}
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type channelResponse struct {
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ID string `json:"id"`
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UserID string `json:"user_id"`
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Title string `json:"title"`
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Type string `json:"type"`
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Description *string `json:"description"`
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Model *string `json:"model"`
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ProviderConfigID *string `json:"provider_config_id"`
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SystemPrompt *string `json:"system_prompt"`
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IsArchived bool `json:"is_archived"`
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IsPinned bool `json:"is_pinned"`
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Folder *string `json:"folder"`
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ProjectID *string `json:"project_id,omitempty"`
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WorkspaceID *string `json:"workspace_id,omitempty"`
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Tags []string `json:"tags"`
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Settings json.RawMessage `json:"settings,omitempty"`
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MessageCount int `json:"message_count"`
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CreatedAt string `json:"created_at"`
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UpdatedAt string `json:"updated_at"`
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}
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type paginatedResponse struct {
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Data interface{} `json:"data"`
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Page int `json:"page"`
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PerPage int `json:"per_page"`
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Total int `json:"total"`
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TotalPages int `json:"total_pages"`
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}
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// ChannelHandler holds dependencies for channel endpoints.
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type ChannelHandler struct{}
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// NewChannelHandler creates a new channel handler.
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func NewChannelHandler() *ChannelHandler {
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return &ChannelHandler{}
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}
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// channelDeleteHook is called after a channel is successfully deleted.
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// Set at startup by SetChannelDeleteHook to clean up storage files.
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var channelDeleteHook func(channelID string)
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// SetChannelDeleteHook registers a callback invoked after channel deletion.
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// Used to clean up channel files on the storage backend.
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func SetChannelDeleteHook(fn func(channelID string)) {
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channelDeleteHook = fn
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}
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// ── Tag Helpers ─────────────────────────────
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// writeTagsArg returns a value suitable for inserting/updating the tags column.
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// Postgres: pq.Array SQLite: JSON string
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func writeTagsArg(tags []string) interface{} {
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if database.IsSQLite() {
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b, _ := json.Marshal(tags)
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return string(b)
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}
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return pq.Array(tags)
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}
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// scanJSON, scanTags, SafeJSON → safe_json.go
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// ── Helpers ─────────────────────────────────
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// getUserID extracts the authenticated user's ID from context.
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func getUserID(c *gin.Context) string {
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uid, _ := c.Get("user_id")
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s, _ := uid.(string)
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return s
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}
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// parsePagination reads page and per_page from query params with defaults.
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func parsePagination(c *gin.Context) (page, perPage, offset int) {
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page, _ = strconv.Atoi(c.DefaultQuery("page", "1"))
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perPage, _ = strconv.Atoi(c.DefaultQuery("per_page", "50"))
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if page < 1 {
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page = 1
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}
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if perPage < 1 {
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perPage = 50
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}
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if perPage > 100 {
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perPage = 100
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}
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offset = (page - 1) * perPage
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return
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}
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// ── List Channels ───────────────────────────
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func (h *ChannelHandler) ListChannels(c *gin.Context) {
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userID := getUserID(c)
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page, perPage, offset := parsePagination(c)
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// Optional filters
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archived := c.DefaultQuery("archived", "false")
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folder := c.Query("folder")
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channelType := c.DefaultQuery("type", "") // empty = all types
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search := strings.TrimSpace(c.Query("search"))
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projectFilter := c.Query("project_id") // "uuid" or "none"
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// Count total
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countQuery := `SELECT COUNT(*) FROM channels WHERE user_id = $1 AND is_archived = $2`
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countArgs := []interface{}{userID, archived == "true"}
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argN := 3
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if channelType != "" {
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countQuery += ` AND type = $` + strconv.Itoa(argN)
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countArgs = append(countArgs, channelType)
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argN++
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}
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if folder != "" {
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countQuery += ` AND folder = $` + strconv.Itoa(argN)
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countArgs = append(countArgs, folder)
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argN++
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}
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if search != "" {
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countQuery += ` AND title ILIKE $` + strconv.Itoa(argN)
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countArgs = append(countArgs, "%"+search+"%")
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argN++
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}
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if projectFilter == "none" {
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countQuery += ` AND project_id IS NULL`
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} else if projectFilter != "" {
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countQuery += ` AND project_id = $` + strconv.Itoa(argN)
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countArgs = append(countArgs, projectFilter)
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argN++
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}
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var total int
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if err := database.DB.QueryRow(database.Q(countQuery), countArgs...).Scan(&total); err != nil {
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c.JSON(http.StatusInternalServerError, gin.H{"error": "failed to count channels"})
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return
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}
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// Fetch channels with message count
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query := `
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SELECT c.id, c.user_id, c.title, c.type, c.description, c.model, c.provider_config_id,
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c.system_prompt, c.is_archived, c.is_pinned, c.folder, c.project_id, c.workspace_id,
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c.tags, c.settings,
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COALESCE(mc.cnt, 0) AS message_count,
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c.created_at, c.updated_at
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FROM channels c
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LEFT JOIN (
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SELECT channel_id, COUNT(*) AS cnt FROM messages GROUP BY channel_id
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) mc ON mc.channel_id = c.id
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WHERE c.user_id = $1 AND c.is_archived = $2`
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args := []interface{}{userID, archived == "true"}
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argN = 3
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if channelType != "" {
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query += ` AND c.type = $` + strconv.Itoa(argN)
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args = append(args, channelType)
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argN++
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}
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if folder != "" {
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query += ` AND c.folder = $` + strconv.Itoa(argN)
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args = append(args, folder)
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argN++
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}
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if search != "" {
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query += ` AND c.title ILIKE $` + strconv.Itoa(argN)
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args = append(args, "%"+search+"%")
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argN++
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}
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if projectFilter == "none" {
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query += ` AND c.project_id IS NULL`
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} else if projectFilter != "" {
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query += ` AND c.project_id = $` + strconv.Itoa(argN)
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args = append(args, projectFilter)
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argN++
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}
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query += ` ORDER BY c.is_pinned DESC, c.updated_at DESC LIMIT $` + strconv.Itoa(argN) + ` OFFSET $` + strconv.Itoa(argN+1)
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args = append(args, perPage, offset)
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rows, err := database.DB.Query(database.Q(query), args...)
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if err != nil {
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c.JSON(http.StatusInternalServerError, gin.H{"error": "failed to list channels"})
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return
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}
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defer rows.Close()
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channels := make([]channelResponse, 0)
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for rows.Next() {
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var ch channelResponse
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var tags []string
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err := rows.Scan(
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&ch.ID, &ch.UserID, &ch.Title, &ch.Type, &ch.Description, &ch.Model, &ch.ProviderConfigID,
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&ch.SystemPrompt, &ch.IsArchived, &ch.IsPinned, &ch.Folder, &ch.ProjectID, &ch.WorkspaceID,
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scanTags(&tags), scanJSON(&ch.Settings),
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&ch.MessageCount, &ch.CreatedAt, &ch.UpdatedAt,
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)
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if err != nil {
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c.JSON(http.StatusInternalServerError, gin.H{"error": "failed to scan channel"})
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return
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}
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if tags == nil {
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tags = []string{}
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}
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ch.Tags = tags
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channels = append(channels, ch)
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}
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SafeJSON(c, http.StatusOK, paginatedResponse{
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Data: channels,
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Page: page,
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PerPage: perPage,
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Total: total,
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TotalPages: int(math.Ceil(float64(total) / float64(perPage))),
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})
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}
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// ── Create Channel ──────────────────────────
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func (h *ChannelHandler) CreateChannel(c *gin.Context) {
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userID := getUserID(c)
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var req createChannelRequest
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if err := c.ShouldBindJSON(&req); err != nil {
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c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
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return
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}
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if req.Tags == nil {
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req.Tags = []string{}
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}
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// Default type is "direct" (1:1 AI chat)
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channelType := req.Type
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if channelType == "" {
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channelType = "direct"
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}
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// INSERT and retrieve the new row
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var ch channelResponse
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var tags []string
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if database.IsSQLite() {
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id := store.NewID()
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_, err := database.DB.Exec(`
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INSERT INTO channels (id, user_id, title, type, description, model,
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system_prompt, provider_config_id, folder, tags)
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VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?)`,
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id, userID, req.Title, channelType, req.Description, req.Model,
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req.SystemPrompt, req.ProviderConfigID, req.Folder, writeTagsArg(req.Tags),
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)
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if err != nil {
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c.JSON(http.StatusInternalServerError, gin.H{"error": "failed to create channel"})
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return
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}
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// Read back the row
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err = database.DB.QueryRow(`
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SELECT id, user_id, title, type, description, model, provider_config_id,
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system_prompt, is_archived, is_pinned, folder, project_id, workspace_id,
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tags, settings,
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created_at, updated_at
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FROM channels WHERE id = ?`, id).Scan(
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&ch.ID, &ch.UserID, &ch.Title, &ch.Type, &ch.Description, &ch.Model, &ch.ProviderConfigID,
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&ch.SystemPrompt, &ch.IsArchived, &ch.IsPinned, &ch.Folder, &ch.ProjectID, &ch.WorkspaceID,
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scanTags(&tags), scanJSON(&ch.Settings), &ch.CreatedAt, &ch.UpdatedAt,
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)
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if err != nil {
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c.JSON(http.StatusInternalServerError, gin.H{"error": "failed to read created channel: " + err.Error()})
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return
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}
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} else {
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err := database.DB.QueryRow(`
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INSERT INTO channels (user_id, title, type, description, model, system_prompt, provider_config_id, folder, tags)
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VALUES ($1, $2, $3, $4, $5, $6, $7, $8, $9)
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RETURNING id, user_id, title, type, description, model, provider_config_id, system_prompt,
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is_archived, is_pinned, folder, project_id, workspace_id, tags, settings, created_at, updated_at
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`, userID, req.Title, channelType, req.Description, req.Model, req.SystemPrompt, req.ProviderConfigID,
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req.Folder, pq.Array(req.Tags),
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).Scan(
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&ch.ID, &ch.UserID, &ch.Title, &ch.Type, &ch.Description, &ch.Model, &ch.ProviderConfigID,
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&ch.SystemPrompt, &ch.IsArchived, &ch.IsPinned, &ch.Folder, &ch.ProjectID, &ch.WorkspaceID,
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pq.Array(&tags), scanJSON(&ch.Settings), &ch.CreatedAt, &ch.UpdatedAt,
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)
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if err != nil {
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c.JSON(http.StatusInternalServerError, gin.H{"error": "failed to create channel"})
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return
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}
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}
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if tags == nil {
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tags = []string{}
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}
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ch.Tags = tags
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ch.MessageCount = 0
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// Auto-create channel_member for the creator
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if database.IsSQLite() {
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_, _ = database.DB.Exec(`
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INSERT INTO channel_members (id, channel_id, user_id, role)
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VALUES (?, ?, ?, 'owner')
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ON CONFLICT DO NOTHING
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`, store.NewID(), ch.ID, userID)
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} else {
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_, _ = database.DB.Exec(`
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INSERT INTO channel_members (channel_id, user_id, role)
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VALUES ($1, $2, 'owner')
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ON CONFLICT DO NOTHING
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`, ch.ID, userID)
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}
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// Auto-create channel_model if model specified
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if req.Model != "" {
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if database.IsSQLite() {
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_, _ = database.DB.Exec(`
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INSERT INTO channel_models (id, channel_id, model_id, provider_config_id, is_default)
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VALUES (?, ?, ?, ?, 1)
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ON CONFLICT DO NOTHING
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`, store.NewID(), ch.ID, req.Model, req.ProviderConfigID)
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} else {
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_, _ = database.DB.Exec(`
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INSERT INTO channel_models (channel_id, model_id, provider_config_id, is_default)
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VALUES ($1, $2, $3, true)
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ON CONFLICT DO NOTHING
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`, ch.ID, req.Model, req.ProviderConfigID)
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}
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}
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SafeJSON(c, http.StatusCreated, ch)
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}
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// ── Get Channel ─────────────────────────────
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func (h *ChannelHandler) GetChannel(c *gin.Context) {
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userID := getUserID(c)
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channelID := c.Param("id")
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var ch channelResponse
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var tags []string
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err := database.DB.QueryRow(database.Q(`
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SELECT c.id, c.user_id, c.title, c.type, c.description, c.model, c.provider_config_id,
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c.system_prompt, c.is_archived, c.is_pinned, c.folder, c.project_id, c.workspace_id,
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c.tags, c.settings,
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COALESCE(mc.cnt, 0) AS message_count,
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c.created_at, c.updated_at
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FROM channels c
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LEFT JOIN (
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SELECT channel_id, COUNT(*) AS cnt FROM messages GROUP BY channel_id
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) mc ON mc.channel_id = c.id
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WHERE c.id = $1 AND c.user_id = $2
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`), channelID, userID).Scan(
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&ch.ID, &ch.UserID, &ch.Title, &ch.Type, &ch.Description, &ch.Model, &ch.ProviderConfigID,
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&ch.SystemPrompt, &ch.IsArchived, &ch.IsPinned, &ch.Folder, &ch.ProjectID, &ch.WorkspaceID,
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scanTags(&tags), scanJSON(&ch.Settings),
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&ch.MessageCount, &ch.CreatedAt, &ch.UpdatedAt,
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)
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if err == sql.ErrNoRows {
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c.JSON(http.StatusNotFound, gin.H{"error": "channel not found"})
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return
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}
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if err != nil {
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c.JSON(http.StatusInternalServerError, gin.H{"error": "failed to get channel"})
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return
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}
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if tags == nil {
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tags = []string{}
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}
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ch.Tags = tags
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SafeJSON(c, http.StatusOK, ch)
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}
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// ── Update Channel ──────────────────────────
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func (h *ChannelHandler) UpdateChannel(c *gin.Context) {
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userID := getUserID(c)
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channelID := c.Param("id")
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if database.DB == nil {
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c.JSON(http.StatusServiceUnavailable, gin.H{"error": "database unavailable"})
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return
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}
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var req updateChannelRequest
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if err := c.ShouldBindJSON(&req); err != nil {
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c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
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return
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}
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// Verify ownership
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var ownerID string
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err := database.DB.QueryRow(database.Q(`SELECT user_id FROM channels WHERE id = $1`), channelID).Scan(&ownerID)
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if err == sql.ErrNoRows {
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c.JSON(http.StatusNotFound, gin.H{"error": "channel not found"})
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return
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}
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if ownerID != userID {
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c.JSON(http.StatusForbidden, gin.H{"error": "not your channel"})
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return
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}
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// Build dynamic UPDATE with ? placeholders (converted for Postgres)
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setClauses := []string{}
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args := []interface{}{}
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addClause := func(col string, val interface{}) {
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setClauses = append(setClauses, col+" = ?")
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args = append(args, val)
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}
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if req.Title != nil {
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addClause("title", *req.Title)
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}
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if req.Description != nil {
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addClause("description", *req.Description)
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}
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if req.Model != nil {
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addClause("model", *req.Model)
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}
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if req.SystemPrompt != nil {
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addClause("system_prompt", *req.SystemPrompt)
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}
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if req.ProviderConfigID != nil {
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addClause("provider_config_id", *req.ProviderConfigID)
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}
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if req.IsArchived != nil {
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addClause("is_archived", *req.IsArchived)
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}
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if req.IsPinned != nil {
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addClause("is_pinned", *req.IsPinned)
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}
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if req.Folder != nil {
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addClause("folder", *req.Folder)
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}
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if req.Tags != nil {
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addClause("tags", writeTagsArg(req.Tags))
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}
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if req.Settings != nil {
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// Validate settings is well-formed JSON before writing
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if !json.Valid([]byte(*req.Settings)) {
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c.JSON(http.StatusBadRequest, gin.H{"error": "settings must be valid JSON"})
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return
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}
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// JSONB merge: new settings keys overwrite existing, unmentioned keys preserved
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if database.IsSQLite() {
|
|
setClauses = append(setClauses, "settings = json_patch(settings, ?)")
|
|
} else {
|
|
setClauses = append(setClauses, "settings = COALESCE(settings, '{}'::jsonb) || ?::jsonb")
|
|
}
|
|
args = append(args, []byte(*req.Settings))
|
|
}
|
|
if req.WorkspaceID != nil {
|
|
if *req.WorkspaceID == "" {
|
|
addClause("workspace_id", nil) // unbind
|
|
} else {
|
|
addClause("workspace_id", *req.WorkspaceID)
|
|
}
|
|
}
|
|
|
|
if len(setClauses) == 0 {
|
|
c.JSON(http.StatusBadRequest, gin.H{"error": "no fields to update"})
|
|
return
|
|
}
|
|
|
|
query := "UPDATE channels SET " + strings.Join(setClauses, ", ")
|
|
query += " WHERE id = ? AND user_id = ?"
|
|
args = append(args, channelID, userID)
|
|
|
|
if !database.IsSQLite() {
|
|
query = convertPlaceholders(query)
|
|
}
|
|
|
|
_, err = database.DB.Exec(query, args...)
|
|
if err != nil {
|
|
c.JSON(http.StatusInternalServerError, gin.H{"error": "failed to update channel"})
|
|
return
|
|
}
|
|
|
|
// Return updated channel
|
|
h.GetChannel(c)
|
|
}
|
|
|
|
// ── Delete Channel ──────────────────────────
|
|
|
|
func (h *ChannelHandler) DeleteChannel(c *gin.Context) {
|
|
userID := getUserID(c)
|
|
channelID := c.Param("id")
|
|
|
|
result, err := database.DB.Exec(
|
|
database.Q(`DELETE FROM channels WHERE id = $1 AND user_id = $2`),
|
|
channelID, userID,
|
|
)
|
|
if err != nil {
|
|
c.JSON(http.StatusInternalServerError, gin.H{"error": "failed to delete channel"})
|
|
return
|
|
}
|
|
|
|
rows, _ := result.RowsAffected()
|
|
if rows == 0 {
|
|
c.JSON(http.StatusNotFound, gin.H{"error": "channel not found"})
|
|
return
|
|
}
|
|
|
|
// Clean up storage files (CASCADE already removed PG file rows)
|
|
if channelDeleteHook != nil {
|
|
go channelDeleteHook(channelID)
|
|
}
|
|
|
|
c.JSON(http.StatusOK, gin.H{"message": "channel deleted"})
|
|
}
|