-- 0007_ai_config.sql
-- AI-administrasjon: modellaliaser, leverandører, jobbruting og tokenlogging.
-- PG som source of truth for LiteLLM config-generering.

BEGIN;

-- === Modellaliaser (globale, ikke per workspace) ===
CREATE TABLE ai_model_aliases (
    id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
    alias TEXT NOT NULL UNIQUE,           -- f.eks. "sidelinja/rutine"
    description TEXT,                      -- kort beskrivelse av aliaset
    is_active BOOLEAN NOT NULL DEFAULT true,
    created_at TIMESTAMPTZ NOT NULL DEFAULT now(),
    updated_at TIMESTAMPTZ NOT NULL DEFAULT now()
);

-- === Leverandør-modeller per alias med prioritet ===
CREATE TABLE ai_model_providers (
    id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
    alias_id UUID NOT NULL REFERENCES ai_model_aliases(id) ON DELETE CASCADE,
    priority INT NOT NULL DEFAULT 1,       -- lavere = høyere prioritet i LiteLLM
    litellm_model TEXT NOT NULL,           -- f.eks. "gemini/gemini-2.5-flash-lite"
    api_key_env TEXT NOT NULL,             -- f.eks. "GEMINI_API_KEY"
    is_active BOOLEAN NOT NULL DEFAULT true,
    created_at TIMESTAMPTZ NOT NULL DEFAULT now(),
    updated_at TIMESTAMPTZ NOT NULL DEFAULT now(),
    UNIQUE (alias_id, priority)
);

-- === Jobbtype → alias mapping ===
CREATE TABLE ai_job_routing (
    job_type TEXT PRIMARY KEY,             -- f.eks. "ai_text_process"
    alias_id UUID NOT NULL REFERENCES ai_model_aliases(id) ON DELETE RESTRICT,
    description TEXT,
    created_at TIMESTAMPTZ NOT NULL DEFAULT now(),
    updated_at TIMESTAMPTZ NOT NULL DEFAULT now()
);

-- === Per-kall token-logging (workspace-scopet) ===
CREATE TABLE ai_usage_log (
    id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
    workspace_id UUID NOT NULL REFERENCES workspaces(id) ON DELETE CASCADE,
    job_id UUID REFERENCES job_queue(id) ON DELETE SET NULL,
    job_type TEXT NOT NULL,
    model_alias TEXT NOT NULL,              -- alias brukt (snapshot)
    model_actual TEXT,                      -- faktisk modell fra respons
    prompt_tokens INT NOT NULL DEFAULT 0,
    completion_tokens INT NOT NULL DEFAULT 0,
    total_tokens INT NOT NULL DEFAULT 0,
    created_at TIMESTAMPTZ NOT NULL DEFAULT now()
);

CREATE INDEX idx_ai_usage_log_workspace ON ai_usage_log (workspace_id, created_at DESC);
CREATE INDEX idx_ai_usage_log_alias ON ai_usage_log (model_alias, created_at DESC);

-- === Seed-data: matcher nåværende config.yaml ===

-- Aliaser
INSERT INTO ai_model_aliases (alias, description) VALUES
    ('sidelinja/rutine', 'Billig, høyt volum — tekstrensing, faktauthenting, oversettelse'),
    ('sidelinja/resonering', 'Presis, lav volum — kompleks analyse, research');

-- Leverandører for sidelinja/rutine
INSERT INTO ai_model_providers (alias_id, priority, litellm_model, api_key_env) VALUES
    ((SELECT id FROM ai_model_aliases WHERE alias = 'sidelinja/rutine'), 1, 'gemini/gemini-2.5-flash-lite', 'GEMINI_API_KEY'),
    ((SELECT id FROM ai_model_aliases WHERE alias = 'sidelinja/rutine'), 2, 'gemini/gemini-2.5-flash', 'GEMINI_API_KEY'),
    ((SELECT id FROM ai_model_aliases WHERE alias = 'sidelinja/rutine'), 3, 'openrouter/google/gemini-2.5-flash-preview', 'OPENROUTER_API_KEY');

-- Leverandører for sidelinja/resonering
INSERT INTO ai_model_providers (alias_id, priority, litellm_model, api_key_env) VALUES
    ((SELECT id FROM ai_model_aliases WHERE alias = 'sidelinja/resonering'), 1, 'openrouter/anthropic/claude-sonnet-4', 'OPENROUTER_API_KEY'),
    ((SELECT id FROM ai_model_aliases WHERE alias = 'sidelinja/resonering'), 2, 'gemini/gemini-2.5-flash', 'GEMINI_API_KEY');

-- Jobbruting
INSERT INTO ai_job_routing (job_type, alias_id, description) VALUES
    ('ai_text_process', (SELECT id FROM ai_model_aliases WHERE alias = 'sidelinja/rutine'), 'Tekstrensing og AI-behandling via ✨-knappen');

COMMIT;