add config

3 files changed, 50 insertions, 5 deletions

diff --git a/src/config.zig b/src/config.zig
index 687cd25..02d3c8a 100644
--- a/src/config.zig
+++ b/src/config.zig
@@ -1,4 +1,41 @@
 const std = @import("std");
 
-pub const storage_path = "./storage/";
-pub const session_expires_after = std.time.ns_per_week * 4;
+const Self = @This();
+
+const Config = struct {
+    storage_path: []const u8,
+    session_expires_after: usize,
+};
+
+arena: *std.heap.ArenaAllocator,
+storage_path: []const u8,
+session_expires_after: usize,
+
+pub fn load(allocator: std.mem.Allocator) !Self {
+    const home_path = std.posix.getenv("HOME") orelse return error.MissingHome;
+    const home = try std.fs.cwd().openDirZ(
+        home_path,
+        .{},
+    );
+    const file = home.openFile(
+        ".config/memora/config.json",
+        .{}
+    ) catch return error.MissingConfig;
+
+    const content = try file.readToEndAlloc(allocator, std.math.maxInt(usize));
+    defer allocator.free(content);
+
+    const parsed = try std.json.parseFromSlice(Config, allocator, content, .{
+        .allocate = .alloc_always,
+    });
+    return .{
+        .arena = parsed.arena,
+        .storage_path = parsed.value.storage_path,
+        .session_expires_after = parsed.value.session_expires_after * std.time.ns_per_day,
+    };
+}
+
+pub fn deinit(self: *Self) void {
+    self.arena.deinit();
+    self.* = undefined;
+}
diff --git a/src/storage/root.zig b/src/storage/root.zig
index 381dc45..f11798b 100644
--- a/src/storage/root.zig
+++ b/src/storage/root.zig
@@ -1,6 +1,6 @@
 const std = @import("std");
-const config = @import("../config.zig");
 const prompt = @import("../prompt.zig");
+const Config = @import("../config.zig");
 
 pub const User = @import("user.zig");
 
@@ -15,15 +15,22 @@ const Self = @This();
 dir: std.fs.Dir,
 sessions: SessionManager = .empty,
 images: ImageManager = .empty,
+config: Config,
 allocator: std.mem.Allocator,
 
-pub fn init(allocator: std.mem.Allocator) !Self {
+pub fn init(
+    allocator: std.mem.Allocator,
+) !Self {
+    var config = try Config.load(allocator);
+    errdefer config.deinit();
+
     const dir = std.fs.cwd().openDir(config.storage_path, .{}) catch blk: {
         try std.fs.cwd().makeDir(config.storage_path);
         break :blk try std.fs.cwd().openDir(config.storage_path, .{});
     };
 
     var self = Self {
+        .config = config,
         .dir = dir,
         .allocator = allocator,
     };
@@ -67,5 +74,6 @@ pub fn init(allocator: std.mem.Allocator) !Self {
 
 pub fn deinit(self: *Self) void {
     self.dir.close();
+    self.config.deinit();
     self.* = undefined;
 }
diff --git a/src/storage/session-manager/root.zig b/src/storage/session-manager/root.zig
index d0e1441..8a59f21 100644
--- a/src/storage/session-manager/root.zig
+++ b/src/storage/session-manager/root.zig
@@ -65,7 +65,7 @@ pub fn get(self: *Self, storage: *Storage, fingerprint: []const u8) ?*Session {
         const now = std.time.Instant.now() catch return null;
         const since = now.since(session.age);
 
-        if (since > config.session_expires_after) {
+        if (since > storage.config.session_expires_after) {
             session.deinit(storage.allocator);
             _ = self.cache.remove(fingerprint);
             return null;