Drive - Uploads & dirs

src/api/lib.zig

@@ -9,7 +9,7 @@ const services = struct {
     const communities = @import("./services/communities.zig");
     const actors = @import("./services/actors.zig");
     const auth = @import("./services/auth.zig");
-    const drive = @import("./services/files.zig").files;
+    const drive = @import("./services/files.zig");
     const invites = @import("./services/invites.zig");
     const notes = @import("./services/notes.zig");
     const follows = @import("./services/follows.zig");
@@ -137,6 +137,14 @@ pub const FollowerQueryResult = FollowQueryResult;
 pub const FollowingQueryArgs = FollowQueryArgs;
 pub const FollowingQueryResult = FollowQueryResult;
 
+pub const UploadFileArgs = struct {
+    filename: []const u8,
+    dir: ?[]const u8,
+    description: ?[]const u8,
+    content_type: []const u8,
+    sensitive: bool,
+};
+
 pub fn isAdminSetup(db: sql.Db) !bool {
     _ = services.communities.adminCommunityId(db) catch |err| switch (err) {
         error.NotFound => return false,
@@ -511,9 +519,22 @@ fn ApiConn(comptime DbConn: type) type {
             );
         }
 
-        pub fn uploadFile(self: *Self, filename: []const u8, body: []const u8) !void {
+        pub fn uploadFile(self: *Self, meta: UploadFileArgs, body: []const u8) !void {
             const user_id = self.user_id orelse return error.NoToken;
-            try services.drive.create(self.db, .{ .user_id = user_id }, filename, body, self.allocator);
+            return try services.drive.createFile(self.db, .{
+                .dir = meta.dir orelse "/",
+                .filename = meta.filename,
+                .owner = .{ .user_id = user_id },
+                .created_by = user_id,
+                .description = meta.description,
+                .content_type = meta.content_type,
+                .sensitive = meta.sensitive,
+            }, body, self.allocator);
+        }
+
+        pub fn driveMkdir(self: *Self, path: []const u8) !void {
+            const user_id = self.user_id orelse return error.NoToken;
+            try services.drive.mkdir(self.db, .{ .user_id = user_id }, path, self.allocator);
         }
     };
 }

src/api/services/files.zig

@@ -11,38 +11,197 @@ pub const FileOwner = union(enum) {
 
 pub const DriveFile = struct {
     id: Uuid,
+
+    path: []const u8,
     filename: []const u8,
+
     owner: FileOwner,
+
     size: usize,
+
+    description: []const u8,
+    content_type: []const u8,
+    sensitive: bool,
+
     created_at: DateTime,
+    updated_at: DateTime,
 };
 
-pub const files = struct {
+const EntryType = enum {
-    pub fn create(db: anytype, owner: FileOwner, filename: []const u8, data: []const u8, alloc: std.mem.Allocator) !void {
+    dir,
+    file,
+};
+
+pub const CreateFileArgs = struct {
+    dir: []const u8,
+    filename: []const u8,
+    owner: FileOwner,
+    created_by: Uuid,
+    description: ?[]const u8,
+    content_type: ?[]const u8,
+    sensitive: bool,
+};
+
+fn lookupDirectory(db: anytype, owner: FileOwner, path: []const u8, alloc: std.mem.Allocator) !Uuid {
+    return (try db.queryRow(
+        std.meta.Tuple(
+            &.{util.Uuid},
+        ),
+        \\SELECT id
+        \\FROM drive_entry_path
+        \\WHERE
+        \\  path = (CASE WHEN LENGTH($1) = 0 THEN '/' ELSE '/' || $1 || '/' END)
+        \\  AND account_owner_id IS NOT DISTINCT FROM $2
+        \\  AND community_owner_id IS NOT DISTINCT FROM $3
+        \\  AND kind = 'dir'
+        \\LIMIT 1
+    ,
+        .{
+            std.mem.trim(u8, path, "/"),
+            if (owner == .user_id) owner.user_id else null,
+            if (owner == .community_id) owner.community_id else null,
+        },
+        alloc,
+    ))[0];
+}
+
+fn lookup(db: anytype, owner: FileOwner, path: []const u8, alloc: std.mem.Allocator) !Uuid {
+    return (try db.queryRow(
+        std.meta.Tuple(
+            &.{util.Uuid},
+        ),
+        \\SELECT id
+        \\FROM drive_entry_path
+        \\WHERE
+        \\  path = (CASE WHEN LENGTH($1) = 0 THEN '/' ELSE '/' || $1 || '/' END)
+        \\  AND account_owner_id IS NOT DISTINCT FROM $2
+        \\  AND community_owner_id IS NOT DISTINCT FROM $3
+        \\LIMIT 1
+    ,
+        .{
+            std.mem.trim(u8, path, "/"),
+            if (owner == .user_id) owner.user_id else null,
+            if (owner == .community_id) owner.community_id else null,
+        },
+        alloc,
+    ))[0];
+}
+
+pub fn mkdir(db: anytype, owner: FileOwner, path: []const u8, alloc: std.mem.Allocator) !void {
+    var split = std.mem.splitBackwards(u8, std.mem.trim(u8, path, "/"), "/");
+    const name = split.first();
+    const dir = split.rest();
+    std.log.debug("'{s}' / '{s}'", .{ name, dir });
+
+    if (name.len == 0) return error.EmptyName;
+
+    const id = Uuid.randV4(util.getThreadPrng());
+
+    const tx = try db.begin();
+    errdefer tx.rollback();
+
+    const parent = try lookupDirectory(tx, owner, dir, alloc);
+
+    try tx.insert("drive_entry", .{
+        .id = id,
+
+        .account_owner_id = if (owner == .user_id) owner.user_id else null,
+        .community_owner_id = if (owner == .community_id) owner.community_id else null,
+
+        .name = name,
+        .parent_directory_id = parent,
+    }, alloc);
+    try tx.commit();
+}
+
+pub fn rmdir(db: anytype, owner: FileOwner, path: []const u8, alloc: std.mem.Allocator) !void {
+    const tx = try db.begin();
+    errdefer tx.rollback();
+
+    const id = try lookupDirectory(tx, owner, path, alloc);
+    try tx.exec("DELETE FROM drive_directory WHERE id = $1", .{id}, alloc);
+    try tx.commit();
+}
+
+fn insertFileRow(tx: anytype, id: Uuid, filename: []const u8, owner: FileOwner, dir: Uuid, alloc: std.mem.Allocator) !void {
+    try tx.insert("drive_entry", .{
+        .id = id,
+
+        .account_owner_id = if (owner == .user_id) owner.user_id else null,
+        .community_owner_id = if (owner == .community_id) owner.community_id else null,
+
+        .parent_directory_id = dir,
+        .name = filename,
+
+        .file_id = id,
+    }, alloc);
+}
+
+pub fn createFile(db: anytype, args: CreateFileArgs, data: []const u8, alloc: std.mem.Allocator) !void {
     const id = Uuid.randV4(util.getThreadPrng());
     const now = DateTime.now();
 
-        // TODO: assert we're not in a transaction
+    {
-        db.insert("drive_file", .{
+        var tx = try db.begin();
+        errdefer tx.rollback();
+
+        const dir_id = try lookupDirectory(tx, args.owner, args.dir, alloc);
+
+        try tx.insert("file_upload", .{
             .id = id,
-            .filename = filename,
+
-            .account_owner_id = if (owner == .user_id) owner.user_id else null,
+            .filename = args.filename,
-            .community_owner_id = if (owner == .community_id) owner.community_id else null,
+
-            .created_at = now,
+            .created_by = args.created_by,
             .size = data.len,
-        }, alloc) catch return error.DatabaseFailure;
+
-        // Assume the previous statement succeeded and is not stuck in a transaction
+            .description = args.description,
+            .content_type = args.content_type,
+            .sensitive = args.sensitive,
+
+            .is_deleted = false,
+
+            .created_at = now,
+            .updated_at = now,
+        }, alloc);
+
+        var sub_tx = try tx.savepoint();
+        if (insertFileRow(sub_tx, id, args.filename, args.owner, dir_id, alloc)) |_| {
+            try sub_tx.release();
+        } else |err| {
+            std.log.debug("{}", .{err});
+            switch (err) {
+                error.UniqueViolation => {
+                    try sub_tx.rollbackSavepoint();
+                    // Rename the file before trying again
+                    var split = std.mem.split(u8, args.filename, ".");
+                    const name = split.first();
+                    const ext = split.rest();
+                    var buf: [256]u8 = undefined;
+                    const drive_filename = try std.fmt.bufPrint(&buf, "{s}.{}.{s}", .{ name, id, ext });
+                    try insertFileRow(tx, id, drive_filename, args.owner, dir_id, alloc);
+                },
+                else => return error.DatabaseFailure,
+            }
+        }
+
+        try tx.commit();
+    }
+
     errdefer {
-            db.exec("DELETE FROM drive_file WHERE ID = $1", .{id}, alloc) catch |err| {
+        db.exec("DELETE FROM file_upload WHERE ID = $1", .{id}, alloc) catch |err| {
+            std.log.err("Unable to remove file record in DB: {}", .{err});
+        };
+        db.exec("DELETE FROM drive_entry WHERE ID = $1", .{id}, alloc) catch |err| {
             std.log.err("Unable to remove file record in DB: {}", .{err});
         };
     }
 
     try saveFile(id, data);
-    }
+}
 
-    const data_root = "./files";
+const data_root = "./files";
-    fn saveFile(id: Uuid, data: []const u8) !void {
+fn saveFile(id: Uuid, data: []const u8) !void {
     var dir = try std.fs.cwd().openDir(data_root, .{});
     defer dir.close();
 
@@ -51,21 +210,25 @@ pub const files = struct {
 
     try file.writer().writeAll(data);
     try file.sync();
-    }
+}
 
-    pub fn deref(alloc: std.mem.Allocator, id: Uuid) ![]const u8 {
+pub fn deref(alloc: std.mem.Allocator, id: Uuid) ![]const u8 {
     var dir = try std.fs.cwd().openDir(data_root, .{});
     defer dir.close();
 
     return dir.readFileAlloc(alloc, &id.toCharArray(), 1 << 32);
-    }
+}
 
-    pub fn delete(db: anytype, alloc: std.mem.Allocator, id: Uuid) !void {
+pub fn deleteFile(db: anytype, alloc: std.mem.Allocator, id: Uuid) !void {
     var dir = try std.fs.cwd().openDir(data_root, .{});
     defer dir.close();
 
     try dir.deleteFile(id.toCharArray());
 
-        db.exec("DELETE FROM drive_file WHERE ID = $1", .{id}, alloc) catch return error.DatabaseFailure;
+    const tx = try db.beginOrSavepoint();
-    }
+    errdefer tx.rollback();
-};
+
+    tx.exec("DELETE FROM drive_entry WHERE ID = $1", .{id}, alloc) catch return error.DatabaseFailure;
+    tx.exec("DELETE FROM file_upload WHERE ID = $1", .{id}, alloc) catch return error.DatabaseFailure;
+    try tx.commitOrRelease();
+}

src/main/controllers/api.zig

@@ -28,4 +28,5 @@ pub const routes = .{
     controllers.apiEndpoint(follows.query_followers),
     controllers.apiEndpoint(follows.query_following),
     controllers.apiEndpoint(drive.upload),
+    controllers.apiEndpoint(drive.mkdir),
 };

src/main/controllers/api/drive.zig

@@ -67,9 +67,16 @@ pub const upload = struct {
 
     pub fn handler(req: anytype, res: anytype, srv: anytype) !void {
         const f = req.body.file;
-        const meta = try srv.createFile(f.filename, f.content_type, f.data);
+        try srv.uploadFile(.{
+            .dir = req.args.path,
+            .filename = f.filename,
+            .description = req.body.description,
+            .content_type = f.content_type,
+            .sensitive = req.body.sensitive,
+        }, f.data);
 
-        try res.json(.created, meta);
+        // TODO: print meta
+        try res.json(.created, .{});
     }
 };