78 lines
1.5 KiB
Zig
78 lines
1.5 KiB
Zig
const std = @import("std");
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const sqlite = @import("sqlite");
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// TODO: Make DB an object so we can just do Self.
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const ObjectError = error{
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IncompatibleObjectType, // No ?u32 "id" field
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};
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pub fn getLastId(db: *sqlite.Db) !i64 {
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const row = try db.one(
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struct {
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rowid: i64,
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},
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"SELECT LAST_INSERT_ROWID();",
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.{},
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.{},
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);
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if (row) |row_i| {
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return row_i.rowid;
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}
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return 0;
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}
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pub fn init() !sqlite.Db {
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var db = try sqlite.Db.init(.{
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.mode = .{ .File = "/tmp/data.db" },
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.open_flags = .{
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.write = true,
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.create = true,
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},
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.threading_mode = .MultiThread,
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});
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try migrate(&db);
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return db;
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}
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// TODO: Make a proper migration system.
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fn migrate(db: *sqlite.Db) !void {
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try db.exec(
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\\CREATE TABLE IF NOT EXISTS item (
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\\ id INTEGER PRIMARY KEY
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\\);
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,
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.{},
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.{},
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);
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try db.exec(
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\\CREATE TABLE IF NOT EXISTS tag (
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\\ name TEXT PRIMARY KEY
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\\);
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,
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.{},
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.{},
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);
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try db.exec(
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\\CREATE TABLE IF NOT EXISTS item_tag (
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\\ item INTEGER,
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\\ tag TEXT,
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\\ value TEXT,
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\\
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\\ PRIMARY KEY (item, tag),
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\\
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\\ FOREIGN KEY (item) REFERENCES item(id) ON DELETE CASCADE,
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\\ FOREIGN KEY (tag) REFERENCES tag(name) ON DELETE CASCADE ON UPDATE CASCADE
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\\);
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,
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.{},
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.{},
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);
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}
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