//! kei-content-store EntitySchema — declarative spec consumed by
//! `kei_entity_store::Store` and its verb templates.
//!
//! Primary entity is the `content_units` table (assets). Prompts,
//! campaigns, and `campaign_assets` ride `custom_migrations` because
//! they are separate tables that keep their existing column names so
//! `prompts.rs` / `campaigns.rs` compile unchanged.

use kei_entity_store::schema::{EdgeKeyKind, EntitySchema, FieldDef};

static FIELDS: &[FieldDef] = &[
    FieldDef::pk("id"),
    FieldDef::text_default("unit_type", "asset"),
    FieldDef::text_nn("title"),
    FieldDef::text("content"),
    FieldDef::text("media_type"),
    FieldDef::text("file_path"),
    FieldDef::text("file_hash"),
    FieldDef::text("provider"),
    FieldDef::integer("cost_cents"),
    FieldDef::integer("parent_id"),
    FieldDef::created_at(),
    FieldDef::updated_at(),
];

const DDL_SECONDARY: &str = r#"
    CREATE INDEX IF NOT EXISTS idx_cu_type ON content_units(unit_type);
    CREATE INDEX IF NOT EXISTS idx_cu_hash ON content_units(file_hash) WHERE file_hash != '';

    CREATE TABLE IF NOT EXISTS prompts (
        id          INTEGER PRIMARY KEY,
        prompt_text TEXT NOT NULL,
        prompt_hash TEXT NOT NULL,
        prompt_type TEXT DEFAULT '',
        model       TEXT DEFAULT '',
        version     INTEGER DEFAULT 1,
        parent_id   INTEGER DEFAULT 0,
        created_at  INTEGER NOT NULL,
        UNIQUE(prompt_hash, model)
    );

    CREATE TABLE IF NOT EXISTS campaigns (
        id          INTEGER PRIMARY KEY,
        name        TEXT NOT NULL,
        description TEXT DEFAULT '',
        status      TEXT DEFAULT 'draft',
        created_at  INTEGER NOT NULL
    );

    CREATE TABLE IF NOT EXISTS campaign_assets (
        campaign_id INTEGER NOT NULL,
        asset_id    INTEGER NOT NULL,
        PRIMARY KEY(campaign_id, asset_id)
    );
"#;

pub static CONTENT_SCHEMA: EntitySchema = EntitySchema {
    name: "asset",
    table: "content_units",
    fields: FIELDS,
    enabled_verbs: &["create", "get", "list", "search", "update", "delete"],
    fts_columns: Some(&["title", "content"]),
    edge_table: None,
    edge_key_kind: EdgeKeyKind::IntegerPair,
    archived_field: None,
    custom_migrations: &[DDL_SECONDARY],
};