CREATE TABLE IF NOT EXISTS projects (
    id TEXT PRIMARY KEY,
    name TEXT NOT NULL,
    root_path TEXT NOT NULL UNIQUE,
    canonical_path TEXT NOT NULL,
    is_git_repository INTEGER NOT NULL DEFAULT 0,
    trust_level TEXT NOT NULL DEFAULT 'readonly',
    detected_stack_json TEXT NOT NULL DEFAULT '{}',
    created_at TEXT NOT NULL DEFAULT (datetime('now')),
    last_opened_at TEXT NOT NULL DEFAULT (datetime('now'))
);

CREATE TABLE IF NOT EXISTS project_settings (
    project_id TEXT PRIMARY KEY,
    model_profile_id TEXT,
    approval_mode TEXT NOT NULL DEFAULT 'balanced',
    git_isolation_mode TEXT NOT NULL DEFAULT 'worktree',
    network_policy TEXT NOT NULL DEFAULT 'local_only',
    read_roots_json TEXT NOT NULL DEFAULT '[]',
    write_roots_json TEXT NOT NULL DEFAULT '[]',
    ignored_paths_json TEXT NOT NULL DEFAULT '[]',
    commands_json TEXT NOT NULL DEFAULT '{}',
    FOREIGN KEY(project_id) REFERENCES projects(id) ON DELETE CASCADE
);

CREATE TABLE IF NOT EXISTS tasks (
    id TEXT PRIMARY KEY,
    project_id TEXT NOT NULL,
    title TEXT NOT NULL,
    description TEXT NOT NULL DEFAULT '',
    mode TEXT NOT NULL DEFAULT 'planAndExecute',
    status TEXT NOT NULL DEFAULT 'draft',
    base_revision TEXT,
    worktree_path TEXT,
    created_at TEXT NOT NULL DEFAULT (datetime('now')),
    updated_at TEXT NOT NULL DEFAULT (datetime('now')),
    completed_at TEXT,
    failure_code TEXT,
    failure_message TEXT,
    FOREIGN KEY(project_id) REFERENCES projects(id) ON DELETE CASCADE
);

CREATE TABLE IF NOT EXISTS task_events (
    id TEXT PRIMARY KEY,
    task_id TEXT NOT NULL,
    sequence INTEGER NOT NULL,
    event_type TEXT NOT NULL,
    payload_json TEXT NOT NULL DEFAULT '{}',
    created_at TEXT NOT NULL DEFAULT (datetime('now')),
    UNIQUE(task_id, sequence),
    FOREIGN KEY(task_id) REFERENCES tasks(id) ON DELETE CASCADE
);

CREATE TABLE IF NOT EXISTS messages (
    id TEXT PRIMARY KEY,
    task_id TEXT NOT NULL,
    role TEXT NOT NULL,
    content_markdown TEXT NOT NULL DEFAULT '',
    metadata_json TEXT NOT NULL DEFAULT '{}',
    created_at TEXT NOT NULL DEFAULT (datetime('now')),
    FOREIGN KEY(task_id) REFERENCES tasks(id) ON DELETE CASCADE
);

CREATE TABLE IF NOT EXISTS plans (
    id TEXT PRIMARY KEY,
    task_id TEXT NOT NULL,
    version INTEGER NOT NULL DEFAULT 1,
    status TEXT NOT NULL DEFAULT 'draft',
    content_json TEXT NOT NULL DEFAULT '{}',
    created_at TEXT NOT NULL DEFAULT (datetime('now')),
    approved_at TEXT,
    FOREIGN KEY(task_id) REFERENCES tasks(id) ON DELETE CASCADE
);

CREATE TABLE IF NOT EXISTS tool_calls (
    id TEXT PRIMARY KEY,
    task_id TEXT NOT NULL,
    tool_name TEXT NOT NULL,
    arguments_json TEXT NOT NULL DEFAULT '{}',
    reason TEXT NOT NULL DEFAULT '',
    risk_level TEXT NOT NULL DEFAULT 'low',
    approval_status TEXT NOT NULL DEFAULT 'pending',
    status TEXT NOT NULL DEFAULT 'pending',
    output_summary TEXT,
    error_json TEXT,
    started_at TEXT,
    completed_at TEXT,
    FOREIGN KEY(task_id) REFERENCES tasks(id) ON DELETE CASCADE
);

CREATE TABLE IF NOT EXISTS patches (
    id TEXT PRIMARY KEY,
    task_id TEXT NOT NULL,
    version INTEGER NOT NULL DEFAULT 1,
    status TEXT NOT NULL DEFAULT 'draft',
    base_revision TEXT,
    summary TEXT NOT NULL DEFAULT '',
    created_at TEXT NOT NULL DEFAULT (datetime('now')),
    applied_at TEXT,
    FOREIGN KEY(task_id) REFERENCES tasks(id) ON DELETE CASCADE
);

CREATE TABLE IF NOT EXISTS patch_files (
    id TEXT PRIMARY KEY,
    patch_id TEXT NOT NULL,
    file_path TEXT NOT NULL,
    operation TEXT NOT NULL,
    before_hash TEXT,
    after_hash TEXT,
    diff_text TEXT NOT NULL DEFAULT '',
    review_status TEXT NOT NULL DEFAULT 'pending',
    FOREIGN KEY(patch_id) REFERENCES patches(id) ON DELETE CASCADE
);

CREATE TABLE IF NOT EXISTS command_runs (
    id TEXT PRIMARY KEY,
    task_id TEXT,
    program TEXT NOT NULL,
    args_json TEXT NOT NULL DEFAULT '[]',
    cwd TEXT NOT NULL,
    risk_level TEXT NOT NULL DEFAULT 'low',
    exit_code INTEGER,
    status TEXT NOT NULL DEFAULT 'pending',
    output_log_path TEXT,
    started_at TEXT NOT NULL DEFAULT (datetime('now')),
    completed_at TEXT
);

CREATE TABLE IF NOT EXISTS model_profiles (
    id TEXT PRIMARY KEY,
    name TEXT NOT NULL,
    role TEXT NOT NULL DEFAULT 'planner',
    provider TEXT NOT NULL,
    base_url TEXT NOT NULL,
    model_id TEXT NOT NULL,
    api_key_ref TEXT,
    context_window INTEGER,
    max_output_tokens INTEGER,
    temperature REAL,
    capabilities_json TEXT NOT NULL DEFAULT '{}',
    created_at TEXT NOT NULL DEFAULT (datetime('now'))
);

CREATE TABLE IF NOT EXISTS mcp_servers (
    id TEXT PRIMARY KEY,
    name TEXT NOT NULL,
    transport TEXT NOT NULL DEFAULT 'stdio',
    command TEXT,
    args_json TEXT NOT NULL DEFAULT '[]',
    url TEXT,
    status TEXT NOT NULL DEFAULT 'stopped',
    auto_start INTEGER NOT NULL DEFAULT 0,
    created_at TEXT NOT NULL DEFAULT (datetime('now'))
);

CREATE TABLE IF NOT EXISTS index_files (
    id TEXT PRIMARY KEY,
    project_id TEXT NOT NULL,
    file_path TEXT NOT NULL,
    file_size INTEGER NOT NULL DEFAULT 0,
    modified_at TEXT NOT NULL,
    file_hash TEXT,
    language TEXT,
    is_ignored INTEGER NOT NULL DEFAULT 0,
    index_status TEXT NOT NULL DEFAULT 'pending',
    UNIQUE(project_id, file_path),
    FOREIGN KEY(project_id) REFERENCES projects(id) ON DELETE CASCADE
);

CREATE TABLE IF NOT EXISTS symbols (
    id TEXT PRIMARY KEY,
    project_id TEXT NOT NULL,
    file_path TEXT NOT NULL,
    symbol_name TEXT NOT NULL,
    symbol_kind TEXT NOT NULL,
    start_line INTEGER NOT NULL,
    end_line INTEGER,
    parent_symbol_id TEXT,
    FOREIGN KEY(project_id) REFERENCES projects(id) ON DELETE CASCADE
);

CREATE TABLE IF NOT EXISTS app_settings (
    key TEXT PRIMARY KEY,
    value_json TEXT NOT NULL DEFAULT '{}',
    updated_at TEXT NOT NULL DEFAULT (datetime('now'))
);