-- Mission Control Project View foundation
-- Adds project domain tables and links from sag_sager.

CREATE TABLE IF NOT EXISTS mission_projects (
    id BIGSERIAL PRIMARY KEY,
    name VARCHAR(255) NOT NULL,
    description TEXT,
    status VARCHAR(32) NOT NULL DEFAULT 'planned'
        CHECK (status IN ('planned', 'active', 'paused', 'completed', 'cancelled')),
    score INTEGER NOT NULL DEFAULT 0,
    started_at TIMESTAMPTZ,
    ended_at TIMESTAMPTZ,
    created_by INTEGER REFERENCES users(user_id) ON DELETE SET NULL,
    payload JSONB NOT NULL DEFAULT '{}'::jsonb,
    created_at TIMESTAMPTZ NOT NULL DEFAULT NOW(),
    updated_at TIMESTAMPTZ NOT NULL DEFAULT NOW()
);

CREATE INDEX IF NOT EXISTS idx_mission_projects_status ON mission_projects (status);
CREATE INDEX IF NOT EXISTS idx_mission_projects_score ON mission_projects (score DESC);
CREATE INDEX IF NOT EXISTS idx_mission_projects_updated_at ON mission_projects (updated_at DESC);

CREATE TABLE IF NOT EXISTS mission_project_milestones (
    id BIGSERIAL PRIMARY KEY,
    project_id BIGINT NOT NULL REFERENCES mission_projects(id) ON DELETE CASCADE,
    title VARCHAR(255) NOT NULL,
    description TEXT,
    status VARCHAR(32) NOT NULL DEFAULT 'active'
        CHECK (status IN ('active', 'completed', 'cancelled')),
    target_date DATE,
    created_at TIMESTAMPTZ NOT NULL DEFAULT NOW(),
    updated_at TIMESTAMPTZ NOT NULL DEFAULT NOW()
);

CREATE INDEX IF NOT EXISTS idx_mission_project_milestones_project_id ON mission_project_milestones (project_id);
CREATE INDEX IF NOT EXISTS idx_mission_project_milestones_status ON mission_project_milestones (status);
CREATE INDEX IF NOT EXISTS idx_mission_project_milestones_target_date ON mission_project_milestones (target_date);

CREATE TABLE IF NOT EXISTS mission_project_blockers (
    id BIGSERIAL PRIMARY KEY,
    project_id BIGINT NOT NULL REFERENCES mission_projects(id) ON DELETE CASCADE,
    title VARCHAR(255) NOT NULL,
    description TEXT,
    status VARCHAR(32) NOT NULL DEFAULT 'open'
        CHECK (status IN ('open', 'in_progress', 'resolved', 'cancelled')),
    severity VARCHAR(16) NOT NULL DEFAULT 'medium'
        CHECK (severity IN ('low', 'medium', 'high', 'critical')),
    resolved_at TIMESTAMPTZ,
    created_at TIMESTAMPTZ NOT NULL DEFAULT NOW(),
    updated_at TIMESTAMPTZ NOT NULL DEFAULT NOW()
);

CREATE INDEX IF NOT EXISTS idx_mission_project_blockers_project_id ON mission_project_blockers (project_id);
CREATE INDEX IF NOT EXISTS idx_mission_project_blockers_status ON mission_project_blockers (status);
CREATE INDEX IF NOT EXISTS idx_mission_project_blockers_severity ON mission_project_blockers (severity);

ALTER TABLE sag_sager
    ADD COLUMN IF NOT EXISTS project_id BIGINT,
    ADD COLUMN IF NOT EXISTS project_milestone_id BIGINT,
    ADD COLUMN IF NOT EXISTS is_project_blocker BOOLEAN NOT NULL DEFAULT FALSE,
    ADD COLUMN IF NOT EXISTS project_task_type VARCHAR(32);

DO $$
BEGIN
    IF NOT EXISTS (
        SELECT 1
        FROM pg_constraint
        WHERE conname = 'fk_sag_sager_project_id'
    ) THEN
        ALTER TABLE sag_sager
            ADD CONSTRAINT fk_sag_sager_project_id
            FOREIGN KEY (project_id)
            REFERENCES mission_projects(id)
            ON DELETE SET NULL;
    END IF;

    IF NOT EXISTS (
        SELECT 1
        FROM pg_constraint
        WHERE conname = 'fk_sag_sager_project_milestone_id'
    ) THEN
        ALTER TABLE sag_sager
            ADD CONSTRAINT fk_sag_sager_project_milestone_id
            FOREIGN KEY (project_milestone_id)
            REFERENCES mission_project_milestones(id)
            ON DELETE SET NULL;
    END IF;
END $$;

CREATE INDEX IF NOT EXISTS idx_sag_sager_project_id ON sag_sager (project_id);
CREATE INDEX IF NOT EXISTS idx_sag_sager_project_milestone_id ON sag_sager (project_milestone_id);
CREATE INDEX IF NOT EXISTS idx_sag_sager_project_task_type ON sag_sager (project_task_type);
CREATE INDEX IF NOT EXISTS idx_sag_sager_is_project_blocker ON sag_sager (is_project_blocker);