PRAGMA foreign_keys = ON;

-- Unified gear item table for weapons, armor, helmets, backpacks, rigs, and mods/attachments
CREATE TABLE IF NOT EXISTS gear_items (
    id              TEXT PRIMARY KEY,
    api_id          TEXT UNIQUE NOT NULL,
    name            TEXT NOT NULL,
    short_name      TEXT,
    category        TEXT NOT NULL,  -- 'gun' | 'armor' | 'helmet' | 'backpack' | 'rig' | 'mod'
    weight_kg       REAL,
    grid_image_url  TEXT,
    wiki_url        TEXT,
    -- Weapon-specific fields
    caliber         TEXT,
    fire_rate       INTEGER,
    ergonomics      INTEGER,
    recoil_vertical INTEGER,
    default_weight  REAL,           -- weight of gun with default preset mods attached
    -- Armor / Helmet / Rig shared fields
    armor_class     INTEGER,        -- 1-6, NULL if not applicable
    durability      REAL,
    material        TEXT,
    zones           TEXT,           -- comma-separated protection zone names
    head_zones      TEXT,           -- comma-separated head zone names (helmets only)
    deafening       TEXT,           -- None | Low | Medium | High | Complete (helmets)
    -- Backpack / Rig capacity
    capacity        INTEGER,        -- total grid cell count
    -- Mod/attachment classification
    mod_type        TEXT,           -- 'suppressor' | 'scope' | 'flashlight' | 'foregrip' | 'stock' | etc.
    imported_at     TEXT DEFAULT CURRENT_TIMESTAMP,
    updated_at      TEXT DEFAULT CURRENT_TIMESTAMP
);

CREATE INDEX IF NOT EXISTS idx_gear_category    ON gear_items(category);
CREATE INDEX IF NOT EXISTS idx_gear_armor_class ON gear_items(armor_class);
CREATE INDEX IF NOT EXISTS idx_gear_capacity    ON gear_items(capacity);
CREATE INDEX IF NOT EXISTS idx_gear_weight      ON gear_items(weight_kg);
CREATE INDEX IF NOT EXISTS idx_gear_caliber     ON gear_items(caliber);

-- Weapon mod slots: records which named slots exist on each gun
CREATE TABLE IF NOT EXISTS gun_slots (
    gun_id      TEXT NOT NULL REFERENCES gear_items(id) ON DELETE CASCADE,
    slot_id     TEXT NOT NULL,      -- tarkov internal slot ID
    slot_name   TEXT NOT NULL,      -- human-readable name (e.g. "Muzzle")
    slot_nameid TEXT,               -- normalized nameId (e.g. "mod_muzzle")
    required    INTEGER DEFAULT 0,  -- 1 if the slot must be filled
    PRIMARY KEY (gun_id, slot_id)
);

CREATE INDEX IF NOT EXISTS idx_gun_slots_nameid ON gun_slots(slot_nameid);

-- Which items are compatible with each gun slot (from API filters.allowedItems)
CREATE TABLE IF NOT EXISTS gun_slot_items (
    gun_id  TEXT NOT NULL,
    slot_id TEXT NOT NULL,
    item_id TEXT NOT NULL REFERENCES gear_items(id) ON DELETE CASCADE,
    PRIMARY KEY (gun_id, slot_id, item_id),
    FOREIGN KEY (gun_id, slot_id) REFERENCES gun_slots(gun_id, slot_id) ON DELETE CASCADE
);

CREATE INDEX IF NOT EXISTS idx_gun_slot_items_item ON gun_slot_items(item_id);

-- Open plate slots on armor/rig carriers (ItemArmorSlotOpen from tarkov API)
-- Weight of a carrier does NOT include plates in these slots
CREATE TABLE IF NOT EXISTS armor_open_slots (
    carrier_id  TEXT NOT NULL REFERENCES gear_items(id) ON DELETE CASCADE,
    slot_nameid TEXT NOT NULL,  -- e.g. "front_plate", "back_plate", "left_side_plate"
    zones       TEXT,           -- comma-separated zone names e.g. "FR. PLATE,BCK. PLATE"
    PRIMARY KEY (carrier_id, slot_nameid)
);

-- Which plates are compatible with each open slot on a carrier
CREATE TABLE IF NOT EXISTS armor_slot_plates (
    carrier_id  TEXT NOT NULL,
    slot_nameid TEXT NOT NULL,
    plate_id    TEXT NOT NULL REFERENCES gear_items(id) ON DELETE CASCADE,
    PRIMARY KEY (carrier_id, slot_nameid, plate_id),
    FOREIGN KEY (carrier_id, slot_nameid) REFERENCES armor_open_slots(carrier_id, slot_nameid) ON DELETE CASCADE
);

CREATE INDEX IF NOT EXISTS idx_armor_slot_plates_plate ON armor_slot_plates(plate_id);

-- Saved loadout builds
CREATE TABLE IF NOT EXISTS saved_builds (
    id          INTEGER PRIMARY KEY AUTOINCREMENT,
    name        TEXT NOT NULL DEFAULT 'My Build',
    gun_id      TEXT REFERENCES gear_items(id),
    armor_id    TEXT REFERENCES gear_items(id),
    helmet_id   TEXT REFERENCES gear_items(id),
    rig_id      TEXT REFERENCES gear_items(id),
    backpack_id TEXT REFERENCES gear_items(id),
    notes       TEXT,
    created_at  TEXT DEFAULT CURRENT_TIMESTAMP
);