use tauri_plugin_sql::{Migration, MigrationKind};

pub struct YomitanSearch;

impl YomitanSearch {
    pub fn migrations() -> Vec<Migration> {
        vec![
            Migration {
                version: 1,
                description: "create yomitan dict-version tables",
                sql: "
                CREATE TABLE dict (
                    id           INTEGER PRIMARY KEY,
                    title        TEXT    NOT NULL,
                    revision     TEXT    NOT NULL,
                    author       TEXT,
                    url          TEXT,
                    description  TEXT,
                    sort_order   INTEGER NOT NULL DEFAULT 0,
                    installed_at TEXT    NOT NULL DEFAULT (datetime('now')),
                    bundle_name  TEXT,                  -- custom
                    lang         TEXT    NOT NULL,      -- custom
                    asset_count  INTEGER,               -- custom
                    source       TEXT,                  -- custom
                    UNIQUE (title, revision)
                );
                ",
                kind: MigrationKind::Up,
            },
            Migration {
                version: 1,
                description: "create yomitan ja query tables",
                sql: "
                CREATE TABLE ja_search (
                    id          INTEGER NOT NULL,       -- yomitan.terms.id OR yomitan dups OR -user.terms.id
                    dict_id     INTEGER NOT NULL REFERENCES dict(id) ON DELETE CASCADE,
                    term        TEXT NOT NULL,          -- normalized
                    term_seg    TEXT,                   -- segmented and filtered for fillers
                    reading     TEXT NOT NULL,          -- normalized
                    frequency   INTEGER,
                    PRIMARY KEY (id, dict_id)
                );

                CREATE INDEX ja_search_term       ON ja_search (term);
                CREATE INDEX ja_search_reading    ON ja_search (reading);
                CREATE INDEX ja_search_frequency  ON ja_search (frequency DESC);

                CREATE VIRTUAL TABLE IF NOT EXISTS ja_search_ft USING fts5 (
                    term_seg,
                    content='ja_search',
                    content_rowid='rowid',
                    tokenize=unicode61
                );

                CREATE TRIGGER t_ja_search_ft_after_insert
                AFTER INSERT ON ja_search BEGIN
                    INSERT INTO ja_search_ft (rowid, term_seg) VALUES (NEW.rowid, NEW.term_seg);
                END;

                CREATE TRIGGER t_ja_search_ft_after_delete
                AFTER DELETE ON ja_search BEGIN
                    INSERT INTO ja_search_ft (ja_search_ft, rowid, term_seg) VALUES ('delete', OLD.rowid, OLD.term_seg);
                END;

                CREATE TRIGGER t_ja_search_ft_after_update
                AFTER UPDATE ON ja_search BEGIN
                    INSERT INTO ja_search_ft (ja_search_ft, rowid, term_seg) VALUES ('delete', OLD.rowid, OLD.term_seg);
                    INSERT INTO ja_search_ft (rowid, term_seg) VALUES (NEW.rowid, NEW.term_seg);
                END;
                ",
                kind: MigrationKind::Up
            }
        ]
    }
}