[update] added migration scripts for migrating news data to articles, geographic and category tagging, and default sharing templates

backend-rust/migrations/005_create_statistics_table.up.sql

@@ -0,0 +1,50 @@
+-- Create reading statistics table
+CREATE TABLE IF NOT EXISTS reading_stats
+(
+    id              INTEGER PRIMARY KEY AUTOINCREMENT,
+    user_id         INTEGER            DEFAULT 1,   -- For future multi-user support
+    article_id      INTEGER   NOT NULL REFERENCES articles (id) ON DELETE CASCADE,
+    read_at         TIMESTAMP NOT NULL,
+    reading_time    INTEGER,                        -- in seconds
+    completion_rate REAL               DEFAULT 1.0, -- 0.0-1.0, how much of the article was read
+    created_at      TIMESTAMP NOT NULL DEFAULT (datetime('now'))
+);
+
+-- Create filter presets table
+CREATE TABLE IF NOT EXISTS filter_presets
+(
+    id              INTEGER PRIMARY KEY AUTOINCREMENT,
+    name            TEXT      NOT NULL,
+    filter_criteria TEXT      NOT NULL,           -- JSON string of filter parameters
+    user_id         INTEGER            DEFAULT 1, -- For future multi-user support
+    created_at      TIMESTAMP NOT NULL DEFAULT (datetime('now'))
+);
+
+-- Create share templates table
+CREATE TABLE IF NOT EXISTS share_templates
+(
+    id               INTEGER PRIMARY KEY AUTOINCREMENT,
+    name             TEXT      NOT NULL,
+    format           TEXT      NOT NULL, -- 'text', 'markdown', 'html', 'json'
+    template_content TEXT      NOT NULL,
+    is_default       BOOLEAN   NOT NULL DEFAULT 0,
+    created_at       TIMESTAMP NOT NULL DEFAULT (datetime('now'))
+);
+
+-- Create legacy migration tracking table
+CREATE TABLE IF NOT EXISTS legacy_migration
+(
+    id              INTEGER PRIMARY KEY AUTOINCREMENT,
+    old_filter_type TEXT      NOT NULL, -- 'country', 'category', etc.
+    old_value       TEXT      NOT NULL,
+    new_tag_ids     TEXT,               -- JSON array of tag IDs
+    migrated_at     TIMESTAMP NOT NULL DEFAULT (datetime('now'))
+);
+
+-- Create indexes
+CREATE INDEX IF NOT EXISTS idx_reading_stats_user_id ON reading_stats (user_id);
+CREATE INDEX IF NOT EXISTS idx_reading_stats_article_id ON reading_stats (article_id);
+CREATE INDEX IF NOT EXISTS idx_reading_stats_read_at ON reading_stats (read_at);
+CREATE INDEX IF NOT EXISTS idx_filter_presets_user_id ON filter_presets (user_id);
+CREATE INDEX IF NOT EXISTS idx_share_templates_format ON share_templates (format);
+CREATE INDEX IF NOT EXISTS idx_legacy_migration_old_filter_type ON legacy_migration (old_filter_type);