feat: implement wiki and wiki content management system including database schemas, DTOs, and API endpoints

db/migrations/000008_wiki.up.sql

@@ -5,7 +5,6 @@ CREATE TABLE IF NOT EXISTS wikis (
     project_id UUID NOT NULL REFERENCES projects(id) ON DELETE CASCADE,
     title TEXT,
     slug TEXT,
-    content TEXT,
     is_deleted BOOLEAN NOT NULL DEFAULT false,
     created_at TIMESTAMPTZ DEFAULT now(),
     updated_at TIMESTAMPTZ DEFAULT now()

db/migrations/000016_wiki_content.down.sql

@@ -0,0 +1 @@
+DROP TABLE IF EXISTS wiki_content;

db/migrations/000016_wiki_content.up.sql

@@ -0,0 +1,11 @@
+CREATE TABLE IF NOT EXISTS wiki_content (
+    id UUID PRIMARY KEY DEFAULT uuidv7(),
+    wiki_id UUID NOT NULL REFERENCES wikis(id) ON DELETE CASCADE,
+    title TEXT NOT NULL,
+    content TEXT,
+    is_deleted BOOLEAN NOT NULL DEFAULT false,
+    created_at TIMESTAMPTZ DEFAULT now()
+);
+
+CREATE INDEX idx_wiki_content_wiki_id ON wiki_content(wiki_id);
+CREATE INDEX idx_wiki_content_created_at ON wiki_content(created_at DESC);

db/query/wiki.sql

@@ -1,8 +1,8 @@
 -- name: CreateWiki :one
 INSERT INTO wikis (
-    id, title, slug, content, project_id
+    id, title, slug, project_id
 ) VALUES (
-    COALESCE(sqlc.narg('id')::uuid, uuidv7()), $1, $2, $3, $4
+    COALESCE(sqlc.narg('id')::uuid, uuidv7()), $1, $2, $3
 )
 RETURNING *;
 
@@ -16,7 +16,6 @@ UPDATE wikis
 SET 
     title = COALESCE(sqlc.narg('title'), title),
     slug = COALESCE(sqlc.narg('slug'), slug),
-    content = COALESCE(sqlc.narg('content'), content),
     project_id = COALESCE(sqlc.narg('project_id'), project_id)
 WHERE id = sqlc.arg('id') AND is_deleted = false
 RETURNING *;
@@ -93,3 +92,38 @@ WHERE slug = $1 AND is_deleted = false;
 
 -- name: GetWikisBySlugs :many
 SELECT * FROM wikis WHERE slug = ANY($1::text[]) AND is_deleted = false;
+
+-- name: CreateWikiContent :one
+INSERT INTO wiki_content (
+    id, wiki_id, title, content
+) VALUES (
+    COALESCE(sqlc.narg('id')::uuid, uuidv7()), $1, $2, $3
+)
+RETURNING *;
+
+-- name: GetWikiContentCount :one
+SELECT COUNT(*)
+FROM wiki_content
+WHERE wiki_id = $1;
+
+-- name: GetWikiContentById :one
+SELECT *
+FROM wiki_content
+WHERE id = $1 AND is_deleted = false;
+
+-- name: GetWikiContentByIDs :many
+SELECT *
+FROM wiki_content
+WHERE id = ANY($1::uuid[]) AND is_deleted = false;
+
+-- name: GetWikiContentByWikiID :many
+SELECT id, title, created_at
+FROM wiki_content
+WHERE wiki_id = $1 AND is_deleted = false
+ORDER BY created_at DESC;
+
+-- name: GetWikiContentByWikiIDs :many
+SELECT id, wiki_id, title, created_at
+FROM wiki_content
+WHERE wiki_id = ANY($1::uuid[]) AND is_deleted = false
+ORDER BY created_at DESC;

db/schema.sql

@@ -102,12 +102,20 @@ CREATE TABLE IF NOT EXISTS wikis (
     project_id UUID NOT NULL REFERENCES projects(id) ON DELETE CASCADE,
     title TEXT,
     slug TEXT UNIQUE,
-    content TEXT,
     is_deleted BOOLEAN NOT NULL DEFAULT false,
     created_at TIMESTAMPTZ DEFAULT now(),
     updated_at TIMESTAMPTZ DEFAULT now()
 );
 
+CREATE TABLE IF NOT EXISTS wiki_content (
+    id UUID PRIMARY KEY DEFAULT uuidv7(),
+    wiki_id UUID NOT NULL REFERENCES wikis(id) ON DELETE CASCADE,
+    title TEXT NOT NULL,
+    content TEXT,
+    is_deleted BOOLEAN NOT NULL DEFAULT false,
+    created_at TIMESTAMPTZ DEFAULT now()
+);
+
 CREATE TABLE IF NOT EXISTS entity_wikis (
     entity_id UUID REFERENCES entities(id) ON DELETE CASCADE,
     wiki_id UUID REFERENCES wikis(id) ON DELETE CASCADE,

internal/controllers/wikiController.go

@@ -136,3 +136,30 @@ func (h *WikiController) SearchWikis(c fiber.Ctx) error {
 	})
 }
 
+// GetWikiContentById handles fetching a single wiki content by ID.
+// @Summary      Get wiki content by ID
+// @Description  Get detailed information about a specific wiki content version
+// @Tags         Wikis
+// @Accept       json
+// @Produce      json
+// @Param        id   path      string  true  "Wiki Content ID"
+// @Success      200  {object}  response.CommonResponse
+// @Failure      500  {object}  response.CommonResponse
+// @Router       /wikis/content/{id} [get]
+func (h *WikiController) GetWikiContentById(c fiber.Ctx) error {
+	ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
+	defer cancel()
+	id := c.Params("id")
+	res, err := h.service.GetWikiContentByID(ctx, id)
+	if err != nil {
+		return c.Status(err.Code).JSON(response.CommonResponse{
+			Status:  false,
+			Message: err.Message,
+		})
+	}
+	return c.Status(fiber.StatusOK).JSON(response.CommonResponse{
+		Status: true,
+		Data:   res,
+	})
+}
+

internal/dtos/response/wiki.go

@@ -4,13 +4,27 @@ import (
 	"time"
 )
 
+type WikiContentSample struct {
+	ID        string     `json:"id"`
+	Title     string     `json:"title"`
+	CreatedAt *time.Time `json:"created_at"`
+}
+
 type WikiResponse struct {
 	ID            string              `json:"id"`
 	Title         string              `json:"title,omitempty"`
 	Slug          string              `json:"slug,omitempty"`
-	Content   string     `json:"content,omitempty"`
+	ContentSample []WikiContentSample `json:"content_sample,omitempty"`
 	ProjectID     string              `json:"project_id"`
 	IsDeleted     bool                `json:"is_deleted,omitempty"`
 	CreatedAt     *time.Time          `json:"created_at,omitempty"`
 	UpdatedAt     *time.Time          `json:"updated_at,omitempty"`
 }
+
+type WikiContentResponse struct {
+	ID        string     `json:"id"`
+	WikiID    string     `json:"wiki_id"`
+	Title     string     `json:"title"`
+	Content   string     `json:"content"`
+	CreatedAt *time.Time `json:"created_at"`
+}

internal/gen/sqlc/models.go

@@ -234,8 +234,16 @@ type Wiki struct {
 	ProjectID pgtype.UUID        `json:"project_id"`
 	Title     pgtype.Text        `json:"title"`
 	Slug      pgtype.Text        `json:"slug"`
-	Content   pgtype.Text        `json:"content"`
 	IsDeleted bool               `json:"is_deleted"`
 	CreatedAt pgtype.Timestamptz `json:"created_at"`
 	UpdatedAt pgtype.Timestamptz `json:"updated_at"`
 }
+
+type WikiContent struct {
+	ID        pgtype.UUID        `json:"id"`
+	WikiID    pgtype.UUID        `json:"wiki_id"`
+	Title     string             `json:"title"`
+	Content   pgtype.Text        `json:"content"`
+	IsDeleted bool               `json:"is_deleted"`
+	CreatedAt pgtype.Timestamptz `json:"created_at"`
+}

internal/gen/sqlc/wiki.sql.go

@@ -68,17 +68,16 @@ func (q *Queries) CreateEntityWikis(ctx context.Context, arg CreateEntityWikisPa
 
 const createWiki = `-- name: CreateWiki :one
 INSERT INTO wikis (
-    id, title, slug, content, project_id
+    id, title, slug, project_id
 ) VALUES (
-    COALESCE($5::uuid, uuidv7()), $1, $2, $3, $4
+    COALESCE($4::uuid, uuidv7()), $1, $2, $3
 )
-RETURNING id, project_id, title, slug, content, is_deleted, created_at, updated_at
+RETURNING id, project_id, title, slug, is_deleted, created_at, updated_at
 `
 
 type CreateWikiParams struct {
 	Title     pgtype.Text `json:"title"`
 	Slug      pgtype.Text `json:"slug"`
-	Content   pgtype.Text `json:"content"`
 	ProjectID pgtype.UUID `json:"project_id"`
 	ID        pgtype.UUID `json:"id"`
 }
@@ -87,7 +86,6 @@ func (q *Queries) CreateWiki(ctx context.Context, arg CreateWikiParams) (Wiki, e
 	row := q.db.QueryRow(ctx, createWiki,
 		arg.Title,
 		arg.Slug,
-		arg.Content,
 		arg.ProjectID,
 		arg.ID,
 	)
@@ -97,7 +95,6 @@ func (q *Queries) CreateWiki(ctx context.Context, arg CreateWikiParams) (Wiki, e
 		&i.ProjectID,
 		&i.Title,
 		&i.Slug,
-		&i.Content,
 		&i.IsDeleted,
 		&i.CreatedAt,
 		&i.UpdatedAt,
@@ -105,6 +102,41 @@ func (q *Queries) CreateWiki(ctx context.Context, arg CreateWikiParams) (Wiki, e
 	return i, err
 }
 
+const createWikiContent = `-- name: CreateWikiContent :one
+INSERT INTO wiki_content (
+    id, wiki_id, title, content
+) VALUES (
+    COALESCE($4::uuid, uuidv7()), $1, $2, $3
+)
+RETURNING id, wiki_id, title, content, is_deleted, created_at
+`
+
+type CreateWikiContentParams struct {
+	WikiID  pgtype.UUID `json:"wiki_id"`
+	Title   string      `json:"title"`
+	Content pgtype.Text `json:"content"`
+	ID      pgtype.UUID `json:"id"`
+}
+
+func (q *Queries) CreateWikiContent(ctx context.Context, arg CreateWikiContentParams) (WikiContent, error) {
+	row := q.db.QueryRow(ctx, createWikiContent,
+		arg.WikiID,
+		arg.Title,
+		arg.Content,
+		arg.ID,
+	)
+	var i WikiContent
+	err := row.Scan(
+		&i.ID,
+		&i.WikiID,
+		&i.Title,
+		&i.Content,
+		&i.IsDeleted,
+		&i.CreatedAt,
+	)
+	return i, err
+}
+
 const deleteEntityWiki = `-- name: DeleteEntityWiki :exec
 DELETE FROM entity_wikis
 WHERE entity_id = $1 AND wiki_id = $2
@@ -154,7 +186,7 @@ func (q *Queries) DeleteWikisByIDs(ctx context.Context, dollar_1 []pgtype.UUID)
 }
 
 const getWikiById = `-- name: GetWikiById :one
-SELECT id, project_id, title, slug, content, is_deleted, created_at, updated_at
+SELECT id, project_id, title, slug, is_deleted, created_at, updated_at
 FROM wikis
 WHERE id = $1 AND is_deleted = false
 `
@@ -167,7 +199,6 @@ func (q *Queries) GetWikiById(ctx context.Context, id pgtype.UUID) (Wiki, error)
 		&i.ProjectID,
 		&i.Title,
 		&i.Slug,
-		&i.Content,
 		&i.IsDeleted,
 		&i.CreatedAt,
 		&i.UpdatedAt,
@@ -176,7 +207,7 @@ func (q *Queries) GetWikiById(ctx context.Context, id pgtype.UUID) (Wiki, error)
 }
 
 const getWikiBySlug = `-- name: GetWikiBySlug :one
-SELECT id, project_id, title, slug, content, is_deleted, created_at, updated_at
+SELECT id, project_id, title, slug, is_deleted, created_at, updated_at
 FROM wikis
 WHERE slug = $1 AND is_deleted = false
 `
@@ -189,7 +220,6 @@ func (q *Queries) GetWikiBySlug(ctx context.Context, slug pgtype.Text) (Wiki, er
 		&i.ProjectID,
 		&i.Title,
 		&i.Slug,
-		&i.Content,
 		&i.IsDeleted,
 		&i.CreatedAt,
 		&i.UpdatedAt,
@@ -197,8 +227,146 @@ func (q *Queries) GetWikiBySlug(ctx context.Context, slug pgtype.Text) (Wiki, er
 	return i, err
 }
 
+const getWikiContentByIDs = `-- name: GetWikiContentByIDs :many
+SELECT id, wiki_id, title, content, is_deleted, created_at
+FROM wiki_content
+WHERE id = ANY($1::uuid[]) AND is_deleted = false
+`
+
+func (q *Queries) GetWikiContentByIDs(ctx context.Context, dollar_1 []pgtype.UUID) ([]WikiContent, error) {
+	rows, err := q.db.Query(ctx, getWikiContentByIDs, dollar_1)
+	if err != nil {
+		return nil, err
+	}
+	defer rows.Close()
+	items := []WikiContent{}
+	for rows.Next() {
+		var i WikiContent
+		if err := rows.Scan(
+			&i.ID,
+			&i.WikiID,
+			&i.Title,
+			&i.Content,
+			&i.IsDeleted,
+			&i.CreatedAt,
+		); err != nil {
+			return nil, err
+		}
+		items = append(items, i)
+	}
+	if err := rows.Err(); err != nil {
+		return nil, err
+	}
+	return items, nil
+}
+
+const getWikiContentById = `-- name: GetWikiContentById :one
+SELECT id, wiki_id, title, content, is_deleted, created_at
+FROM wiki_content
+WHERE id = $1 AND is_deleted = false
+`
+
+func (q *Queries) GetWikiContentById(ctx context.Context, id pgtype.UUID) (WikiContent, error) {
+	row := q.db.QueryRow(ctx, getWikiContentById, id)
+	var i WikiContent
+	err := row.Scan(
+		&i.ID,
+		&i.WikiID,
+		&i.Title,
+		&i.Content,
+		&i.IsDeleted,
+		&i.CreatedAt,
+	)
+	return i, err
+}
+
+const getWikiContentByWikiID = `-- name: GetWikiContentByWikiID :many
+SELECT id, title, created_at
+FROM wiki_content
+WHERE wiki_id = $1 AND is_deleted = false
+ORDER BY created_at DESC
+`
+
+type GetWikiContentByWikiIDRow struct {
+	ID        pgtype.UUID        `json:"id"`
+	Title     string             `json:"title"`
+	CreatedAt pgtype.Timestamptz `json:"created_at"`
+}
+
+func (q *Queries) GetWikiContentByWikiID(ctx context.Context, wikiID pgtype.UUID) ([]GetWikiContentByWikiIDRow, error) {
+	rows, err := q.db.Query(ctx, getWikiContentByWikiID, wikiID)
+	if err != nil {
+		return nil, err
+	}
+	defer rows.Close()
+	items := []GetWikiContentByWikiIDRow{}
+	for rows.Next() {
+		var i GetWikiContentByWikiIDRow
+		if err := rows.Scan(&i.ID, &i.Title, &i.CreatedAt); err != nil {
+			return nil, err
+		}
+		items = append(items, i)
+	}
+	if err := rows.Err(); err != nil {
+		return nil, err
+	}
+	return items, nil
+}
+
+const getWikiContentByWikiIDs = `-- name: GetWikiContentByWikiIDs :many
+SELECT id, wiki_id, title, created_at
+FROM wiki_content
+WHERE wiki_id = ANY($1::uuid[]) AND is_deleted = false
+ORDER BY created_at DESC
+`
+
+type GetWikiContentByWikiIDsRow struct {
+	ID        pgtype.UUID        `json:"id"`
+	WikiID    pgtype.UUID        `json:"wiki_id"`
+	Title     string             `json:"title"`
+	CreatedAt pgtype.Timestamptz `json:"created_at"`
+}
+
+func (q *Queries) GetWikiContentByWikiIDs(ctx context.Context, dollar_1 []pgtype.UUID) ([]GetWikiContentByWikiIDsRow, error) {
+	rows, err := q.db.Query(ctx, getWikiContentByWikiIDs, dollar_1)
+	if err != nil {
+		return nil, err
+	}
+	defer rows.Close()
+	items := []GetWikiContentByWikiIDsRow{}
+	for rows.Next() {
+		var i GetWikiContentByWikiIDsRow
+		if err := rows.Scan(
+			&i.ID,
+			&i.WikiID,
+			&i.Title,
+			&i.CreatedAt,
+		); err != nil {
+			return nil, err
+		}
+		items = append(items, i)
+	}
+	if err := rows.Err(); err != nil {
+		return nil, err
+	}
+	return items, nil
+}
+
+const getWikiContentCount = `-- name: GetWikiContentCount :one
+SELECT COUNT(*)
+FROM wiki_content
+WHERE wiki_id = $1
+`
+
+func (q *Queries) GetWikiContentCount(ctx context.Context, wikiID pgtype.UUID) (int64, error) {
+	row := q.db.QueryRow(ctx, getWikiContentCount, wikiID)
+	var count int64
+	err := row.Scan(&count)
+	return count, err
+}
+
 const getWikisByIDs = `-- name: GetWikisByIDs :many
-SELECT id, project_id, title, slug, content, is_deleted, created_at, updated_at FROM wikis WHERE id = ANY($1::uuid[]) AND is_deleted = false
+SELECT id, project_id, title, slug, is_deleted, created_at, updated_at FROM wikis WHERE id = ANY($1::uuid[]) AND is_deleted = false
 `
 
 func (q *Queries) GetWikisByIDs(ctx context.Context, dollar_1 []pgtype.UUID) ([]Wiki, error) {
@@ -215,7 +383,6 @@ func (q *Queries) GetWikisByIDs(ctx context.Context, dollar_1 []pgtype.UUID) ([]
 			&i.ProjectID,
 			&i.Title,
 			&i.Slug,
-			&i.Content,
 			&i.IsDeleted,
 			&i.CreatedAt,
 			&i.UpdatedAt,
@@ -231,7 +398,7 @@ func (q *Queries) GetWikisByIDs(ctx context.Context, dollar_1 []pgtype.UUID) ([]
 }
 
 const getWikisByProjectId = `-- name: GetWikisByProjectId :many
-SELECT id, project_id, title, slug, content, is_deleted, created_at, updated_at
+SELECT id, project_id, title, slug, is_deleted, created_at, updated_at
 FROM wikis
 WHERE project_id = $1 AND is_deleted = false
 `
@@ -250,7 +417,6 @@ func (q *Queries) GetWikisByProjectId(ctx context.Context, projectID pgtype.UUID
 			&i.ProjectID,
 			&i.Title,
 			&i.Slug,
-			&i.Content,
 			&i.IsDeleted,
 			&i.CreatedAt,
 			&i.UpdatedAt,
@@ -266,7 +432,7 @@ func (q *Queries) GetWikisByProjectId(ctx context.Context, projectID pgtype.UUID
 }
 
 const getWikisBySlugs = `-- name: GetWikisBySlugs :many
-SELECT id, project_id, title, slug, content, is_deleted, created_at, updated_at FROM wikis WHERE slug = ANY($1::text[]) AND is_deleted = false
+SELECT id, project_id, title, slug, is_deleted, created_at, updated_at FROM wikis WHERE slug = ANY($1::text[]) AND is_deleted = false
 `
 
 func (q *Queries) GetWikisBySlugs(ctx context.Context, dollar_1 []string) ([]Wiki, error) {
@@ -283,7 +449,6 @@ func (q *Queries) GetWikisBySlugs(ctx context.Context, dollar_1 []string) ([]Wik
 			&i.ProjectID,
 			&i.Title,
 			&i.Slug,
-			&i.Content,
 			&i.IsDeleted,
 			&i.CreatedAt,
 			&i.UpdatedAt,
@@ -299,7 +464,7 @@ func (q *Queries) GetWikisBySlugs(ctx context.Context, dollar_1 []string) ([]Wik
 }
 
 const searchWikis = `-- name: SearchWikis :many
-SELECT w.id, w.project_id, w.title, w.slug, w.content, w.is_deleted, w.created_at, w.updated_at
+SELECT w.id, w.project_id, w.title, w.slug, w.is_deleted, w.created_at, w.updated_at
 FROM wikis w
 WHERE w.is_deleted = false
   AND ($1::uuid IS NULL OR w.project_id = $1::uuid)
@@ -347,7 +512,6 @@ func (q *Queries) SearchWikis(ctx context.Context, arg SearchWikisParams) ([]Wik
 			&i.ProjectID,
 			&i.Title,
 			&i.Slug,
-			&i.Content,
 			&i.IsDeleted,
 			&i.CreatedAt,
 			&i.UpdatedAt,
@@ -367,16 +531,14 @@ UPDATE wikis
 SET 
     title = COALESCE($1, title),
     slug = COALESCE($2, slug),
-    content = COALESCE($3, content),
+    project_id = COALESCE($3, project_id)
-    project_id = COALESCE($4, project_id)
+WHERE id = $4 AND is_deleted = false
-WHERE id = $5 AND is_deleted = false
+RETURNING id, project_id, title, slug, is_deleted, created_at, updated_at
-RETURNING id, project_id, title, slug, content, is_deleted, created_at, updated_at
 `
 
 type UpdateWikiParams struct {
 	Title     pgtype.Text `json:"title"`
 	Slug      pgtype.Text `json:"slug"`
-	Content   pgtype.Text `json:"content"`
 	ProjectID pgtype.UUID `json:"project_id"`
 	ID        pgtype.UUID `json:"id"`
 }
@@ -385,7 +547,6 @@ func (q *Queries) UpdateWiki(ctx context.Context, arg UpdateWikiParams) (Wiki, e
 	row := q.db.QueryRow(ctx, updateWiki,
 		arg.Title,
 		arg.Slug,
-		arg.Content,
 		arg.ProjectID,
 		arg.ID,
 	)
@@ -395,7 +556,6 @@ func (q *Queries) UpdateWiki(ctx context.Context, arg UpdateWikiParams) (Wiki, e
 		&i.ProjectID,
 		&i.Title,
 		&i.Slug,
-		&i.Content,
 		&i.IsDeleted,
 		&i.CreatedAt,
 		&i.UpdatedAt,

internal/models/wiki.go

@@ -5,11 +5,17 @@ import (
 	"time"
 )
 
+type WikiContentSample struct {
+	ID        string     `json:"id"`
+	Title     string     `json:"title"`
+	CreatedAt *time.Time `json:"created_at"`
+}
+
 type WikiEntity struct {
 	ID            string              `json:"id"`
 	Title         string              `json:"title"`
 	Slug          string              `json:"slug"`
-	Content   string     `json:"content"`
+	ContentSample []WikiContentSample `json:"content_sample"`
 	ProjectID     string              `json:"project_id"`
 	IsDeleted     bool                `json:"is_deleted"`
 	CreatedAt     *time.Time          `json:"created_at"`
@@ -20,11 +26,21 @@ func (w *WikiEntity) ToResponse() *response.WikiResponse {
 	if w == nil {
 		return nil
 	}
+	
+	var contentSample []response.WikiContentSample
+	for _, c := range w.ContentSample {
+		contentSample = append(contentSample, response.WikiContentSample{
+			ID:        c.ID,
+			Title:     c.Title,
+			CreatedAt: c.CreatedAt,
+		})
+	}
+
 	return &response.WikiResponse{
 		ID:            w.ID,
 		Title:         w.Title,
 		Slug:          w.Slug,
-		Content:   w.Content,
+		ContentSample: contentSample,
 		ProjectID:     w.ProjectID,
 		IsDeleted:     w.IsDeleted,
 		CreatedAt:     w.CreatedAt,
@@ -45,3 +61,12 @@ func WikisEntityToResponse(ws []*WikiEntity) []*response.WikiResponse {
 	}
 	return out
 }
+
+type WikiContentEntity struct {
+	ID        string     `json:"id"`
+	WikiID    string     `json:"wiki_id"`
+	Title     string     `json:"title"`
+	Content   string     `json:"content"`
+	IsDeleted bool       `json:"is_deleted"`
+	CreatedAt *time.Time `json:"created_at"`
+}

internal/repositories/wikiRepository.go

@@ -32,6 +32,10 @@ type WikiRepository interface {
 	BulkDeleteEntityWikisByWikiID(ctx context.Context, wikiID pgtype.UUID) error
 	DeleteEntityWiki(ctx context.Context, entityID pgtype.UUID, wikiID pgtype.UUID) error
 	DeleteEntityWikisByProjectID(ctx context.Context, projectID pgtype.UUID) error
+	CreateContent(ctx context.Context, params sqlc.CreateWikiContentParams) (*models.WikiContentEntity, error)
+	GetContentCountByWikiID(ctx context.Context, wikiID pgtype.UUID) (int64, error)
+	GetContentByID(ctx context.Context, id pgtype.UUID) (*models.WikiContentEntity, error)
+	GetContentByIDs(ctx context.Context, ids []string) ([]*models.WikiContentEntity, error)
 	WithTx(tx pgx.Tx) WikiRepository
 }
 
@@ -93,7 +97,6 @@ func (r *wikiRepository) getByIDsWithFallback(ctx context.Context, ids []string)
 					ID:        convert.UUIDToString(row.ID),
 					Title:     convert.TextToString(row.Title),
 					Slug:      convert.TextToString(row.Slug),
-					Content:   convert.TextToString(row.Content),
 					IsDeleted: row.IsDeleted,
 					ProjectID: convert.UUIDToString(row.ProjectID),
 					CreatedAt: convert.TimeToPtr(row.CreatedAt),
@@ -101,6 +104,20 @@ func (r *wikiRepository) getByIDsWithFallback(ctx context.Context, ids []string)
 				}
 				dbMap[item.ID] = &item
 			}
+
+			samples, err := r.q.GetWikiContentByWikiIDs(ctx, missingPgIds)
+			if err == nil {
+				for _, sample := range samples {
+					wikiID := convert.UUIDToString(sample.WikiID)
+					if item, ok := dbMap[wikiID]; ok {
+						item.ContentSample = append(item.ContentSample, models.WikiContentSample{
+							ID:        convert.UUIDToString(sample.ID),
+							Title:     sample.Title,
+							CreatedAt: convert.TimeToPtr(sample.CreatedAt),
+						})
+					}
+				}
+			}
 		}
 	}
 
@@ -147,12 +164,24 @@ func (r *wikiRepository) GetByID(ctx context.Context, id pgtype.UUID) (*models.W
 		ID:        convert.UUIDToString(row.ID),
 		Title:     convert.TextToString(row.Title),
 		Slug:      convert.TextToString(row.Slug),
-		Content:   convert.TextToString(row.Content),
 		IsDeleted: row.IsDeleted,
 		ProjectID: convert.UUIDToString(row.ProjectID),
 		CreatedAt: convert.TimeToPtr(row.CreatedAt),
 		UpdatedAt: convert.TimeToPtr(row.UpdatedAt),
 	}
+
+	// Fetch content samples
+	samples, err := r.q.GetWikiContentByWikiID(ctx, row.ID)
+	if err == nil {
+		for _, sample := range samples {
+			wiki.ContentSample = append(wiki.ContentSample, models.WikiContentSample{
+				ID:        convert.UUIDToString(sample.ID),
+				Title:     sample.Title,
+				CreatedAt: convert.TimeToPtr(sample.CreatedAt),
+			})
+		}
+	}
+
 	_ = r.c.Set(ctx, cacheId, wiki, constants.NormalCacheDuration)
 
 	return &wiki, nil
@@ -178,7 +207,6 @@ func (r *wikiRepository) Search(ctx context.Context, params sqlc.SearchWikisPara
 			ID:        convert.UUIDToString(row.ID),
 			Title:     convert.TextToString(row.Title),
 			Slug:      convert.TextToString(row.Slug),
-			Content:   convert.TextToString(row.Content),
 			IsDeleted: row.IsDeleted,
 			ProjectID: convert.UUIDToString(row.ProjectID),
 			CreatedAt: convert.TimeToPtr(row.CreatedAt),
@@ -209,7 +237,6 @@ func (r *wikiRepository) Create(ctx context.Context, params sqlc.CreateWikiParam
 		ID:        convert.UUIDToString(row.ID),
 		Title:     convert.TextToString(row.Title),
 		Slug:      convert.TextToString(row.Slug),
-		Content:   convert.TextToString(row.Content),
 		IsDeleted: row.IsDeleted,
 		ProjectID: convert.UUIDToString(row.ProjectID),
 		CreatedAt: convert.TimeToPtr(row.CreatedAt),
@@ -228,7 +255,6 @@ func (r *wikiRepository) Update(ctx context.Context, params sqlc.UpdateWikiParam
 		ID:        convert.UUIDToString(row.ID),
 		Title:     convert.TextToString(row.Title),
 		Slug:      convert.TextToString(row.Slug),
-		Content:   convert.TextToString(row.Content),
 		IsDeleted: row.IsDeleted,
 		ProjectID: convert.UUIDToString(row.ProjectID),
 		CreatedAt: convert.TimeToPtr(row.CreatedAt),
@@ -285,7 +311,6 @@ func (r *wikiRepository) GetByProjectID(ctx context.Context, projectID pgtype.UU
 			ID:        convert.UUIDToString(row.ID),
 			Title:     convert.TextToString(row.Title),
 			Slug:      convert.TextToString(row.Slug),
-			Content:   convert.TextToString(row.Content),
 			IsDeleted: row.IsDeleted,
 			ProjectID: convert.UUIDToString(row.ProjectID),
 			CreatedAt: convert.TimeToPtr(row.CreatedAt),
@@ -350,7 +375,6 @@ func (r *wikiRepository) GetBySlug(ctx context.Context, slug string) (*models.Wi
 		ID:        convert.UUIDToString(row.ID),
 		Title:     convert.TextToString(row.Title),
 		Slug:      convert.TextToString(row.Slug),
-		Content:   convert.TextToString(row.Content),
 		IsDeleted: row.IsDeleted,
 		ProjectID: convert.UUIDToString(row.ProjectID),
 		CreatedAt: convert.TimeToPtr(row.CreatedAt),
@@ -390,7 +414,6 @@ func (r *wikiRepository) GetBySlugs(ctx context.Context, slugs []string) ([]*mod
 					ID:        convert.UUIDToString(row.ID),
 					Title:     convert.TextToString(row.Title),
 					Slug:      convert.TextToString(row.Slug),
-					Content:   convert.TextToString(row.Content),
 					IsDeleted: row.IsDeleted,
 					ProjectID: convert.UUIDToString(row.ProjectID),
 					CreatedAt: convert.TimeToPtr(row.CreatedAt),
@@ -421,3 +444,117 @@ func (r *wikiRepository) GetBySlugs(ctx context.Context, slugs []string) ([]*mod
 
 	return wikis, nil
 }
+
+func (r *wikiRepository) CreateContent(ctx context.Context, params sqlc.CreateWikiContentParams) (*models.WikiContentEntity, error) {
+	row, err := r.q.CreateWikiContent(ctx, params)
+	if err != nil {
+		return nil, err
+	}
+
+	return &models.WikiContentEntity{
+		ID:        convert.UUIDToString(row.ID),
+		WikiID:    convert.UUIDToString(row.WikiID),
+		Title:     row.Title,
+		Content:   convert.TextToString(row.Content),
+		IsDeleted: row.IsDeleted,
+		CreatedAt: convert.TimeToPtr(row.CreatedAt),
+	}, nil
+}
+
+func (r *wikiRepository) GetContentCountByWikiID(ctx context.Context, wikiID pgtype.UUID) (int64, error) {
+	return r.q.GetWikiContentCount(ctx, wikiID)
+}
+
+func (r *wikiRepository) getContentByIDsWithFallback(ctx context.Context, ids []string) ([]*models.WikiContentEntity, error) {
+	if len(ids) == 0 {
+		return []*models.WikiContentEntity{}, nil
+	}
+	keys := make([]string, len(ids))
+	for i, id := range ids {
+		keys[i] = fmt.Sprintf("wiki_content:id:%s", id)
+	}
+	raws := r.c.MGet(ctx, keys...)
+
+	var contents []*models.WikiContentEntity
+	missingToCache := make(map[string]any)
+
+	var missingPgIds []pgtype.UUID
+	for i, b := range raws {
+		if len(b) == 0 {
+			pgId := pgtype.UUID{}
+			err := pgId.Scan(ids[i])
+			if err == nil {
+				missingPgIds = append(missingPgIds, pgId)
+			}
+		}
+	}
+
+	dbMap := make(map[string]*models.WikiContentEntity)
+	if len(missingPgIds) > 0 {
+		dbRows, err := r.q.GetWikiContentByIDs(ctx, missingPgIds)
+		if err == nil {
+			for _, row := range dbRows {
+				item := models.WikiContentEntity{
+					ID:        convert.UUIDToString(row.ID),
+					WikiID:    convert.UUIDToString(row.WikiID),
+					Title:     row.Title,
+					Content:   convert.TextToString(row.Content),
+					IsDeleted: row.IsDeleted,
+					CreatedAt: convert.TimeToPtr(row.CreatedAt),
+				}
+				dbMap[item.ID] = &item
+			}
+		}
+	}
+
+	for i, b := range raws {
+		if len(b) > 0 {
+			var u models.WikiContentEntity
+			if err := json.Unmarshal(b, &u); err == nil {
+				contents = append(contents, &u)
+			}
+		} else {
+			if item, ok := dbMap[ids[i]]; ok {
+				contents = append(contents, item)
+				missingToCache[keys[i]] = item
+			}
+		}
+	}
+
+	if len(missingToCache) > 0 {
+		_ = r.c.MSet(ctx, missingToCache, constants.NormalCacheDuration)
+	}
+
+	return contents, nil
+}
+
+func (r *wikiRepository) GetContentByID(ctx context.Context, id pgtype.UUID) (*models.WikiContentEntity, error) {
+	cacheId := fmt.Sprintf("wiki_content:id:%s", convert.UUIDToString(id))
+	var content models.WikiContentEntity
+	err := r.c.Get(ctx, cacheId, &content)
+	if err == nil {
+		_ = r.c.Set(ctx, cacheId, content, constants.NormalCacheDuration)
+		return &content, nil
+	}
+
+	row, err := r.q.GetWikiContentById(ctx, id)
+	if err != nil {
+		return nil, err
+	}
+
+	content = models.WikiContentEntity{
+		ID:        convert.UUIDToString(row.ID),
+		WikiID:    convert.UUIDToString(row.WikiID),
+		Title:     row.Title,
+		Content:   convert.TextToString(row.Content),
+		IsDeleted: row.IsDeleted,
+		CreatedAt: convert.TimeToPtr(row.CreatedAt),
+	}
+	_ = r.c.Set(ctx, cacheId, content, constants.NormalCacheDuration)
+
+	return &content, nil
+}
+
+func (r *wikiRepository) GetContentByIDs(ctx context.Context, ids []string) ([]*models.WikiContentEntity, error) {
+	return r.getContentByIDsWithFallback(ctx, ids)
+}

internal/routes/wikiRoute.go

@@ -11,6 +11,7 @@ func WikiRoutes(router fiber.Router, wikiController *controllers.WikiController)
 	wiki.Get("/", wikiController.SearchWikis)
 	wiki.Get("/slug/exists", wikiController.IsExistWikiSlug)
 	wiki.Get("/slug/:slug", wikiController.GetWikiBySlug)
+	wiki.Get("/content/:id", wikiController.GetWikiContentById)
 	wiki.Get("/:id", wikiController.GetWikiById)
 }
 

internal/services/submissionService.go

@@ -512,12 +512,29 @@ func (s *submissionService) UpdateSubmissionStatus(ctx context.Context, reviewer
 					ID:        wikiUUID,
 					Title:     convert.StringToText(wiki.Title),
 					Slug:      convert.PtrToText(wiki.Slug),
-					Content:   convert.StringToText(wiki.Doc),
 					ProjectID: projectUUID,
 				})
 				if err != nil {
 					return nil, fiber.NewError(fiber.StatusInternalServerError, "Failed to update wiki: "+err.Error())
 				}
+
+				count, err := s.wikiRepo.GetContentCountByWikiID(ctx, wikiUUID)
+				if err != nil {
+					return nil, fiber.NewError(fiber.StatusInternalServerError, "Failed to get wiki content count: "+err.Error())
+				}
+				versionTitle := fmt.Sprintf("Version %d", count+1)
+
+				_, err = wikiRepo.CreateContent(ctx, sqlc.CreateWikiContentParams{
+					WikiID:  wikiUUID,
+					Title:   versionTitle,
+					Content: convert.StringToText(wiki.Doc),
+				})
+				if err != nil {
+					return nil, fiber.NewError(fiber.StatusInternalServerError, "Failed to create wiki content: "+err.Error())
+				}
+
+				_ = s.c.Del(ctx, fmt.Sprintf("wiki:id:%s", wikiUUID.String()), fmt.Sprintf("wiki:slug:%s", *wiki.Slug))
+
 				newWikis = append(newWikis, snapshotData.Wikis[i])
 
 			} else if wiki.Source == "inline" {
@@ -525,12 +542,23 @@ func (s *submissionService) UpdateSubmissionStatus(ctx context.Context, reviewer
 					ID:        wikiUUID,
 					Title:     convert.StringToText(wiki.Title),
 					Slug:      convert.PtrToText(wiki.Slug),
-					Content:   convert.StringToText(wiki.Doc),
 					ProjectID: projectUUID,
 				})
 				if err != nil {
 					return nil, fiber.NewError(fiber.StatusInternalServerError, "Failed to create wiki: "+err.Error())
 				}
+
+				_, err = wikiRepo.CreateContent(ctx, sqlc.CreateWikiContentParams{
+					WikiID:  wikiUUID,
+					Title:   "Version 1",
+					Content: convert.StringToText(wiki.Doc),
+				})
+				if err != nil {
+					return nil, fiber.NewError(fiber.StatusInternalServerError, "Failed to create wiki content: "+err.Error())
+				}
+
+				_ = s.c.Del(ctx, fmt.Sprintf("wiki:id:%s", wikiUUID.String()), fmt.Sprintf("wiki:slug:%s", *wiki.Slug))
+
 				newWikis = append(newWikis, snapshotData.Wikis[i])
 
 			} else if wiki.Source == "ref" {

internal/services/wikiService.go

@@ -19,6 +19,7 @@ type WikiService interface {
 	GetWikiBySlug(ctx context.Context, slug string) (*response.WikiResponse, *fiber.Error)
 	IsExistWikiSlug(ctx context.Context, slug string) (bool, *fiber.Error)
 	SearchWikis(ctx context.Context, req *request.SearchWikiDto) ([]*response.WikiResponse, *fiber.Error)
+	GetWikiContentByID(ctx context.Context, id string) (*response.WikiContentResponse, *fiber.Error)
 }
 
 type wikiService struct {
@@ -107,3 +108,22 @@ func (s *wikiService) SearchWikis(ctx context.Context, req *request.SearchWikiDt
 
 	return models.WikisEntityToResponse(wikis), nil
 }
+
+func (s *wikiService) GetWikiContentByID(ctx context.Context, id string) (*response.WikiContentResponse, *fiber.Error) {
+	contentId, err := convert.StringToUUID(id)
+	if err != nil {
+		return nil, fiber.NewError(fiber.StatusBadRequest, "Invalid content ID format")
+	}
+	content, err := s.wikiRepo.GetContentByID(ctx, contentId)
+	if err != nil {
+		return nil, fiber.NewError(fiber.StatusNotFound, "Wiki content not found")
+	}
+
+	return &response.WikiContentResponse{
+		ID:        content.ID,
+		WikiID:    content.WikiID,
+		Title:     content.Title,
+		Content:   content.Content,
+		CreatedAt: content.CreatedAt,
+	}, nil
+}