//! SQL migration strings for the `quotesdb` schema.
//!
//! These strings are run once on startup via [`super::QuoteRepository::run_migrations`].
//! Both the `D1Repository` (WASM) and `NativeRepository` (native) execute these
//! in sequence.

/// Creates the `quotes` table if it does not already exist.
///
/// Stores one row per quote with all core fields. The `auth_code` is stored
/// plaintext for simple passphrase-based ownership verification.
pub const CREATE_QUOTES: &str = "\
CREATE TABLE IF NOT EXISTS quotes (
    id         TEXT     PRIMARY KEY,
    text       TEXT     NOT NULL,
    author     TEXT     NOT NULL,
    source     TEXT,
    date       TEXT,
    auth_code  TEXT     NOT NULL,
    created_at TEXT     NOT NULL DEFAULT (datetime('now')),
    updated_at TEXT     NOT NULL DEFAULT (datetime('now'))
)";

/// Creates the `quote_tags` join table if it does not already exist.
///
/// Uses `ON DELETE CASCADE` so tags are removed automatically when a quote
/// is deleted. The composite primary key prevents duplicate tags per quote.
pub const CREATE_QUOTE_TAGS: &str = "\
CREATE TABLE IF NOT EXISTS quote_tags (
    quote_id TEXT NOT NULL REFERENCES quotes(id) ON DELETE CASCADE,
    tag      TEXT NOT NULL,
    PRIMARY KEY (quote_id, tag)
)";

/// Creates an index on `quote_tags.quote_id` to speed up tag lookups.
pub const CREATE_TAG_INDEX: &str = "\
CREATE INDEX IF NOT EXISTS idx_quote_tags_quote_id ON quote_tags(quote_id)";

/// Creates a case-insensitive index on `quotes.author` for filter queries.
pub const CREATE_AUTHOR_INDEX: &str = "\
CREATE INDEX IF NOT EXISTS idx_quotes_author ON quotes(author COLLATE NOCASE)";

/// Creates the `admin_config` key/value table for global configuration.
///
/// Stores a single row for the admin auth code under key `admin_auth_code`.
pub const CREATE_ADMIN_CONFIG: &str = "\
CREATE TABLE IF NOT EXISTS admin_config (
    key   TEXT PRIMARY KEY,
    value TEXT NOT NULL
)";

/// Adds the `hidden` column to the `quotes` table.
///
/// This is a schema migration for existing databases. The column defaults to
/// `0` (not hidden) so all pre-existing quotes remain publicly visible.
///
/// SQLite does not support `ADD COLUMN IF NOT EXISTS`, so callers must
/// ignore the error when the column already exists (e.g., on repeated startup).
pub const ALTER_QUOTES_ADD_HIDDEN: &str = "\
ALTER TABLE quotes ADD COLUMN hidden INTEGER NOT NULL DEFAULT 0";

/// Creates the `reports` table if it does not already exist.
///
/// Each row represents one user-submitted report against a quote.
/// `quote_id` references `quotes(id)` with `ON DELETE CASCADE` so reports
/// are removed automatically when the associated quote is deleted.
/// `reason` is optional and capped at 256 characters by application logic.
pub const CREATE_REPORTS: &str = "\
CREATE TABLE IF NOT EXISTS reports (
    id         TEXT     PRIMARY KEY,
    quote_id   TEXT     NOT NULL REFERENCES quotes(id) ON DELETE CASCADE,
    reason     TEXT,
    created_at TEXT     NOT NULL DEFAULT (datetime('now'))
)";